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Тематические разделы => Межпланетные станции и научные аппараты => Тема начата: Anatoly Zak от 26.05.2011 08:53:55

Название: OSIRIS-REx
Отправлено: Anatoly Zak от 26.05.2011 08:53:55
НАСА только что объявило новую миссию:

Возвращение грунта с астероида.

Запуск в 2016 г., возвращение в 2023 г.

Обещают привезти до 2 кг.
Название: OSIRIS-REx
Отправлено: us2-star от 26.05.2011 00:18:55
Это из эих вот: http://www.3dnews.ru/news/nasa_vibiraet_mezhdu_veneroi_upiterom_i_asteroidom ?
Вместо Венеры и Луны?
П.С.
С Венерой то всё ясно, а Луна надеюсь пойдет по другим статьям! ;)
Название: OSIRIS-REx
Отправлено: Anatoly Zak от 26.05.2011 09:53:36
ЦитатаЭто из эих вот: http://www.3dnews.ru/news/nasa_vibiraet_mezhdu_veneroi_upiterom_i_asteroidom ?
Вместо Венеры и Луны?
П.С.
С Венерой то всё ясно, а Луна надеюсь пойдет по другим статьям! ;)

Из них:

http://www.nasa.gov/topics/solarsystem/features/osiris-rex.html
Название: OSIRIS-REx
Отправлено: Salo от 26.05.2011 08:17:59
http://www.spaceflightnow.com/news/n1105/25osirisrex/index.html
ЦитатаNASA picks robotic asteroid voyager for liftoff in 2016[/size]
BY STEPHEN CLARK
SPACEFLIGHT NOW
Posted: May 25, 2011

Touting its ability to lay the groundwork for future human voyages, NASA officials announced Wednesday a robotic probe named OSIRIS-REx will launch to an asteroid in 2016 and return up to 4 pounds of rock and dust to Earth seven years later.

(http://www.spaceflightnow.com/news/n1105/25osirisrex/art.jpg)
Artist's concept of OSIRIS-REx. Credit: NASA/Goddard/University of Arizona
 
Led by a research team at the University of Arizona in Tucson, OSIRIS-REx will approach a carbon-rich asteroid and collect samples with an air gun. Scientists expect the asteroid harbors organic molecules, the building blocks that may have kick-started life on Earth.

"We are bringing back what we believe is the type of material that led to the building blocks of life, that led to us," said Michael Drake, principal investigator of the OSIRIS-REx mission from the University of Arizona. "Nothing like that exists right now. It will be a resource that I guarantee will be looked at by generation after generation."

OSIRIS-REx stands for the Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer.

After blasting off from Florida in September 2016, the craft will reach an asteroid designated 1999 RQ36 in 2020. Once it maps the surface from a close-up orbit, the probe will descend and extend a robot arm to blow nitrogen gas on the surface, lifting particles into a capture mechanism.

Drake said the device looks like a car's air filter, and it will corral at least 60 grams, or about one-eighth of a pound, of asteroid material. But testing shows the sampler could collect up to 2 kilograms, or 4.4 pounds, of rock fragments and dust in just a few seconds.

The spacecraft will be manufactured by Lockheed Martin Corp. The scientific instruments will come from the University of Arizona, NASA's Goddard Space Flight Center, Arizona State University and the Canadian Space Agency.

It will weigh about 3,370 pounds at launch, according to Jeff Grossman, NASA's OSIRIS-REx program scientist.

The total cost of OSIRIS-REx is expected to be around $1 billion, including a launch vehicle to send it away from Earth, according to Jim Green, director of NASA's planetary science division.

The target asteroid is rich in carbon and spans approximately 1,900 feet in diameter. Its orbit crosses the path of Earth every September.

(http://www.spaceflightnow.com/news/n1105/25osirisrex/sampler.jpg)
Artist's concept of OSIRIS-REx collecting samples from the asteroid surface. Credit: NASA/Goddard/University of Arizona
 
"This asteroid is a time capsule from the birth of our solar system and ushers in a new era of planetary exploration," Green said. "The knowledge from the mission also will help us to develop methods to better track the orbits of asteroids."

Asteroid RQ36 has garnered attention due to the low risk it could strike Earth. A research team from Spain concluded the asteroid has a 1-in-1,800 chance of hitting Earth in 2182, and although the threat if an impact is slim, the consequences would be catastrophic.

OSIRIS-REx will measure the Yarkovsky effect, a phenomenon in which the absorption and emission of heat from the sun exerts a tiny push on the asteroid. Over time, the effect accumulates enough energy to alter an object's orbit, making threats to Earth more difficult to predict.

Data from OSIRIS-REx will refine the asteroid's orbit and help officials plan strategies to respond to potential impacts.

NASA Administrator Charles Bolden said OSIRIS-REx is a crucial mission to help the agency develop a human exploration program to send astronauts to destinations like asteroids.

"This is a critical step in meeting the objectives outlined by President Obama to extend our reach beyond low Earth orbit and explore into deep space," Bolden said in a statement. "It's robotic missions like these that will pave the way for future human space missions to an asteroid and other deep space destinations."

Green said scientific data from OSIRIS-REx will be shared with NASA's human space program, but the mission's selection was based purely on technical feasibility and scientific return.

The mission's payload includes three cameras, near-infrared and thermal emission spectrometers, and a scanning laser to create a terrain map of the asteroid's irregular surface.

(http://www.spaceflightnow.com/news/n1105/25osirisrex/return.jpg)
Artist's concept of OSIRIS-REx releasing a sample canister for re-entry back into Earth's atmosphere. The capsule will parachute to a landing in Utah, while the spacecraft will continue on in space for a potential extended mission. Credit: NASA/Goddard/University of Arizona
 
If successful, OSIRIS-REx will be the first U.S. mission to return samples from the surface of an asteroid. Japan's Hayabusa mission gathered microscopic dust grains from asteroid Itokawa and landed on Earth last year, successfully ending a star-crossed mission that overcame scores of technical snafus.

"Nobody's really done this before in a way where they didn't have trouble," Drake said.

Hayabusa's sampling device failed at Itokawa in 2005, and what little dust was collected was scraped up when the spacecraft inadvertently hit the surface.

"The beauty of a sample return mission is it's the gift that keeps on giving," Drake said.

Scientists believe primitive asteroids like RQ36 haven't changed much since the dawn of the solar system 4.5 billion years ago. Telescopic observations show RQ36 is abundant in carbon, the basic element for organic molecules.

"We believe it's the sort of stuff that came in through the Earth's atmosphere when the liquid oceans first formed and provided those building blocks (for life)," Drake said. "What are they likely to be? Certainly, things like amino acids we know exist in space, and we expect to find those."

The mission's actual findings will have to wait until the craft reaches the asteroid in 2020.

"We're bringing back something that is essentially untouched by human hands," Drake said.

OSIRIS-REx, the third mission in NASA's New Frontiers program, beat out competing proposals to return samples from the moon's south pole region and a probe to land on Venus.

Those scientific targets will go back into the pool for consideration in the next New Frontiers solicitation, which should begin in about five years, Green said. Other missions to be considered then include a comet surface sample return, a Saturn probe and a spacecraft to visit multiple Trojan asteroids sharing the orbit of Jupiter.
Название: OSIRIS-REx
Отправлено: instml от 26.05.2011 10:44:52
НАСА в 2016 году отправит исследовательский зонд к астероиду
ЦитатаМОСКВА, 26 мая - РИА Новости. Аэрокосмическое агентство США НАСА в 2016 году планирует отправить исследовательский зонд к астероиду, с помощью манипулятора собрать образцы с его поверхности, а затем доставить их на Землю.

Для США это будет первая программа исследования астероида с помощью автоматического зонда, ранее такой проект успешно осуществила Япония: стартовавший в 2003 году зонд "Хаябуса" совершил посадку на астероид Итокава, а в середине июня 2010 года капсула зонда приземлилась в австралийской пустыне, в ней были обнаружены частицы вещества астероида.

Как сообщает в четверг пресс-служба НАСА, американский "астероидный проект" под названием OSIRIS-REx (Origins-Spectral Interpretation-Resource Identification-Security-Regolith Explorer - "происхождение - спектральная интерпретация - обнаружение ресурсов - безопасность - исследователь реголита") был выбран из числа трех других программ, в числе которых были программа по доставке образцов с обратной стороны Луны и миссия по исследованию поверхности Венеры.

Это автоматическая миссия из числа тех, которые прокладывают дорогу для будущих пилотируемых полетов на астероиды и в другие области глубокого космоса", - отметил глава НАСА Чарльз Болден (Charles Bolden).

Астероиды представляют собой остатки "строительного материала", оставшегося со времен зарождения Солнечной системы около 4,5 миллиарда лет назад. Они сохранили неизменными химические свойства вещества, из которого возникла наша планетная система. Их изучение позволит лучше понять те условия, в которых возникла наша планета и ее собратья.

Аппарат OSIRIS-REx после четырехлетнего полета, к 2020 году, приблизится к астероиду 1999 RQ36 - небесному телу приблизительно 580 метров в диаметре и размером примерно с пять футбольных полей. Этот астероид богат углеродом, ключевым элементом для всех органических молекул. Такие молекулы ранее находили в метеоритах и образцах с комет. Ученые рассчитывают выяснить, есть ли такие вещества на RQ36.

"Осирис", оставаясь в пяти километрах от астероида, в течение шести месяцев будет тщательно картировать поверхность небесного тела, после чего ученые смогут выбрать место, откуда с помощью автоматической руки будет взят образец вещества массой около 60 граммов. Затем он будет помещен в капсулу, которая, как ожидается, совершит посадку на полигоне в штате Юта в 2023 году.

Как ожидается стоимость миссии составит примерно 800 миллионов долларов, не считая стоимости запуска.

Кроме того, зонд впервые позволит точно измерить так называемый эффект Ярковского - слабый реактивный импульс, возникающий за счет теплового излучения нагретой Солнцем поверхности астероида.

Для ученых, изучающих астероиды, сближающиеся с Землей, важно оценить воздействие этого эффекта на траекторию астероида, чтобы понять, как предотвратить их столкновения с Землей.

Осирис - третья миссия НАСА в рамках программы New Frontiers. Первая миссия, New Horizons ("Новые горизонты"), стартовала в 2006 году. Этот зонд будет исследовать Плутон и его спутник Харон в июле 2015 года, а затем будет изучать объекты пояса Койпера. Вторая миссия - Juno ("Юнона") - в августе отправится к Юпитеру, чтобы впервые исследовать полюса газового гиганта, его недра и атмосферу.
http://www.rian.ru/science/20110526/379921374.html
Название: OSIRIS-REx
Отправлено: hecata от 26.05.2011 09:23:45
Астеройдик 560 метров в диаметре. Я надеюсь они оставят на поверхности радиомаяк?
Название: OSIRIS-REx
Отправлено: Georgij от 26.05.2011 10:47:59
Хреново. Венерианский проект выглядел куда интереснее. Япония всё равно 2 й зонд планирует. Зачем дублировать? Да и всё понятно уже с астероидами.
Название: OSIRIS-REx
Отправлено: pkl от 26.05.2011 17:00:42
ЦитатаЗачем дублировать?

ЦитатаЭто автоматическая миссия из числа тех, которые прокладывают дорогу для будущих пилотируемых полетов на астероиды и в другие области глубокого космоса", - отметил глава НАСА Чарльз Болден (Charles Bolden).
:!:  :!:  :!:

Не уж то и впрямь всерьёз собрались? :?
Название: OSIRIS-REx
Отправлено: hecata от 26.05.2011 15:45:48
Слушайте, а миллиард долларов - не слишком дорого за такую миссию? Где-нибудь есть описания?
Название: OSIRIS-REx
Отправлено: pkl от 26.05.2011 17:49:25
Во-первых, не 1 млрд., а "всего лишь" 800 млн. А во-вторых... и это как бы многовато. Лучше бы на Венеру чего замутили за те же деньги. Или к планетам-гигантам.

P.S.: К слову, тяжёлый марсоход в 1,5 млрд.$ обошёлся. "Кассини" - в два. Орбитеры к спутникам Юпитера или Сатурна - 1,2 млрд. Так что есть проекты куда интереснее и не сильно дороже. Но это можно объяснить, если они всерьёз решили организовать пилотируемую экспедицию на астероид. Отсюда - и масса образцов. 2 кг - это слишком много для анализа элементного состава. Может, они думают ещё какие-нибудь перспективные технологии испытать в интересах пилотируемой программы.
Название: OSIRIS-REx
Отправлено: Parf от 27.05.2011 13:16:01
ЦитатаХреново. Венерианский проект выглядел куда интереснее. Япония всё равно 2 й зонд планирует. Зачем дублировать? Да и всё понятно уже с астероидами.

Ничего ещё не понятно с астероидами. И в каком смысле "дублировать"? Есть тысячи больших астероидов, к которым ещё никто не летал. И все они разные по истории возникновения, по форме, по составу. Разные и порой непредсказуемые орбиты, наличие спутников, и.т.д. и.т.п.  И да, разведка перед пилотируемым полётом.

А к Меркурию, Венере, Луне, Марсу, Юпитеру, Сатурну - уже летали. Что ещё считать дублированием... :)
Название: OSIRIS-REx
Отправлено: Космос-3794 от 27.05.2011 16:16:10
ЦитатаСлушайте, а миллиард долларов - не слишком дорого за такую миссию? Где-нибудь есть описания?
Первоначально был выдвинут в рамках конкурса Discovery 11 (т.е. умещался в $425M cap), затем Phase A в рамках Discovery 12. Был заново предложен на конкурс New Frontiers 3 ($650M cap + LV). Увеличенный бюджет позволяет расширить научную ПН и соответственно отдачу миссии.

http://uanews.org/files/osiris-rex/OSIRIS-REx_Factsheet.pdf
Название: OSIRIS-REx
Отправлено: Salo от 15.06.2011 20:25:14
http://www.voanews.com/russian/news/NASA-asteroid-2011-06-08-123508854.html
ЦитатаСреда, 08 июня 2011
Космическая миссия на астероид[/size]

Цель экспедиции - больше узнать о происхождении жизни на Земле и предотвратить столкновение

Джессика Берман | Вашингтон

(http://media.voanews.com/images/300*300/RT++RQ36.300.jpg)
Фото Reuters

В ближайшие пять лет Национальное аэрокосмическое агентство США (НАСА) планирует направить беспилотный космический аппарат на ближайший астероид для сбора образцов породы. Ученые надеются, что эти образцы помогут получить новую информацию о возникновении жизни на Земле. У этой миссии есть еще одна цель - получить больше информации об астероиде, который движется по направлению к Земле.

Этот астероид под названием «1999 RQ36» каждый год в сентябре пересекает орбиту земли.

По словам экспертов, астероид шириной 575 метров может столкнуться с Землей примерно в 2182 году с разрушительными последствиями. Однако некоторые эксперты сразу же добавляют, что такое столкновение вряд ли произойдет. Они считают, что задолго до 2182 года ученые разработают план, который позволит направить астероид на новую и безопасную для Земли орбиту.

Уильям Дрейк, директор лаборатории по изучению Луны и других планет в Университете Аризоны в Тусоне, является главным специалистом миссии НАСА «OSIRIS-REx», которая намечена на 2016 год.

Беспилотный космический корабль сблизится с астероидом и использует целый набор специальных фотокамер и инфракрасных спектрометров, для того чтобы ученые смогли получить как можно больше данных о гигантском космическом камне.

По словам Дрейка, астрономы и инженеры уже думают над тем, как столкнуть «1999RQ36» с орбиты Земли:

«Есть разные предложения. Например, можно накрыть всю поверхность астероида огромным парусом, и под воздействием солнечных фотонов он «уплывет», как парусный корабль в океане».

Дрейк говорит, что еще один вариант изменения орбиты астероида - покрасить одну сторону темного астероида в белый цвет. Это повлияет на количество отражаемого им солнечного света, что создаст разное давление на каждой из сторон астероида и таким образом изменит его курс.

Исследователи также надеются на то, что миссия позволит ответить на некоторые из фундаментальных вопросов о жизни на Земле.

После года наблюдений за «1999 RQ36» беспилотный космический аппарат «OSIRIS-REx» должен приблизиться к астероиду, и спустить на него механический зонд для изъятия породы с поверхности. Благодаря этому, как считает Дрейк, может быть получена информация о происхождении жизни на Земле.

Астероиды представляют собой остатки того, что было частью солнечной системы четыре с половиной миллиарда лет назад, и, по словам Дрейка, «1999 RQ36» содержит не только первозданные органические материалы, которых уже нет на Земле, но также множество аминокислот.

По словам Дрейка, ученые считают, что органические материалы, которые они рассчитывают найти на астероиде, аналогичны тем, которые упали на Землю после того, как она стала достаточно холодной и на ее поверхности образовались океаны:

«Сегодня в имеющейся у нас коллекции метеоритов нет подобных материалов. Возможно потому, что они не могут сохраниться, пройдя через атмосферу Земли. Это не означает, что это не могут сделать отдельные молекулы. Однако мы не можем их распознать, поскольку, если они и попадают на Землю сегодня, их сигналы поглощаются всем живым, что находится вокруг нас. Мы никогда бы не смогли обнаружить их».

Дрейк говорит, что поскольку астероид не имеет силы притяжения, космический аппарат сможет синхронизировать свое движение с огромным камнем, приблизившись к нему на расстояние нескольких метров. Он будет собирать образцы пыли, каждые пять секунд «дотрагиваясь» до поверхности при помощи раздвижного манипулятора, струей водорода поднимая пыль с поверхности и собирая ее в небольшой контейнер.

Ученые надеются собрать от 60 граммов до двух килограммов такой пыли, которая будет храниться в специальной капсуле, прикрепленной к космическому аппарату «OSIRIS-REx». В 2023 году космический аппарат доставит эту капсулу на Землю. При приближении к Земле он сбросит капсулу - теплоизоляционная оболочка должна защитить ее при прохождении через плотные слои атмосферы. После этого раскроется парашют, и капсула благополучно приземлится на специальной посадочной площадке в штате Юта.

По словам Дрейка, органический материал с астероида будет изучаться в течение многих лет:

«Например, образцы (лунной) породы, которые собирались космическим кораблем «Аполлон» в период с 1969 по 1972 год, изучаются по сей день, причем во многих случаях это делают ученые, которые родились уже после этих космических экспедиций. Для этого используются инструменты, о которых в то время еще не имели представления. Эти люди стараются ответить на вопросы, которые в то время мы даже не смогли бы задать, поскольку не обладали для этого достаточными знаниями. Это то, что изучается наукой в буквальном смысле на протяжении жизни нескольких поколений».
Название: OSIRIS-REx
Отправлено: instml от 15.06.2011 21:51:06
ЦитатаДрейк говорит, что поскольку астероид не имеет силы притяжения
О как :wink:  :wink:
Название: OSIRIS-REx
Отправлено: Boo от 16.06.2011 11:16:12
Метеоритного вещества мало что ли?
Лучше бы к Европе или к Урану орбитер, те же деньги и сроки...
А для пилотируемой миссии как-то без разницы предварительная доставка образцов грунта, вспомним "Аполлон" хотя бы.
За Марс вообще молчу.

ЦитатаКроме того, зонд впервые позволит точно измерить так называемый эффект Ярковского - слабый реактивный импульс, возникающий за счет теплового излучения нагретой Солнцем поверхности астероида. Для ученых, изучающих астероиды, сближающиеся с Землей, важно оценить воздействие этого эффекта на траекторию астероида, чтобы понять, как предотвратить их столкновения с Землей.
Термоядерный заряд лучше (для проверки) доставить.
Название: OSIRIS-REx
Отправлено: Georgij от 16.06.2011 17:51:44
Европа вообще должна быть целью номер 1. Но сначала срезали Европу Орбитер, потом JIMO теперь и с Лапласом непонятки. Что то странное. А метеорного вещества и на земле валом и Хаябуса со Стардастом привезли. И Хаябуса-2 намечается.
Название: OSIRIS-REx
Отправлено: instml от 27.09.2011 15:01:11
Astronomers Plan Last Look at Asteroid Before OSIRIS-REx Launch
ЦитатаEvery six years, asteroid 1999 RQ 36 nears the Earth - by cosmic standards - and researchers are launching a global observation campaign to learn as much as possible in preparation for the OSIRIS-REx, the first U.S.-led mission to bring back a sample of pristine asteroid material.

Astronomers working on the U.S.' first asteroid-sample return mission - the NASA mission named OSIRIS-REx - have begun a months-long observing campaign that is the last chance to study their target asteroid from Earth before the OSIRIS-REx spacecraft launches in 2016.

OSIRIS-REx is a quest to bring back to Earth a good-sized sample of an asteroid unaltered since solar system formation - a sample that very well could contain molecules that seeded life.

Discovered in 1999, the OSIRIS-REx target asteroid, designated 1999 RQ36, nears Earth once every six years.  During the 2011 closest approach in early September, it will be 10.9 million miles (17.5 million kilometers) away. In 1999, closest approach was 1.4 million miles (2.3 million kilometers).

"Six years sets the whole cadence for our mission," said Dante Lauretta of the University of Arizona Lunar and Planetary Laboratory, deputy principal investigator for the OSIRIS-REx mission.

"The next chance for ground-based telescopes to see this asteroid will be in 2017, when it again nears Earth. Our spacecraft performs a gravity-assist at this time, giving it the kick it needs to rendezvous with the asteroid in 2019-20. The next chance for ground-based astronomy is 2023, the year the spacecraft returns a sample of the asteroid to Earth."

1999 RQ36 last attracted astronomers' attention in 2005, when it passed 3.1 million miles (5 million kilometers) from Earth and appeared 30 times brighter than it does this year.

In 2005, Carl Hergenrother of the UA Lunar and Planetary Laboratory was searching with the 61-inch Kuiper telescope on Mt. Bigelow north of Tucson for exciting targets for the proposed asteroid sample-return mission. He observed 1999 RQ36.

"Looking at my data, I saw this was a B-type asteroid, which is carbonaceous and related to unusual outer main-belt asteroids that act like comets by outgassing volatiles," Hergenrother, who heads the OSIRIS-REx asteroid astronomy working group, said.

After a quick search of the scientific literature, which turned up nothing on the object, he did a Google search. Jackpot.

"Astronomers had been observing this asteroid, just not formally publishing about it," Hergenrother said. "Their results were sitting on their personal Web pages. They had radar images of it, visible and near-infrared observations, confirmed it was a B-type (bluish) asteroid, got a pretty good light curve and a rotation period, although the rotation period was wrong."

Michael Drake of the UA Lunar and Planetary Laboratory, principal investigator for OSIRIS-REx, urged Josh Emery, one of Drake's former students, now of the University of Tennessee and a co-investigator on OSIRIS-REx, to observe 1999 RQ36 with the Spitzer Space Telescope. Emery won the telescope time, providing first observations of the asteroid at thermal infrared wavelengths.

"Coming out of 2006-07, 1999 RQ36 was probably the best-studied near-Earth asteroid out there that hadn't already been visited by a spacecraft," Hergenrother said. "We lucked out in that not only is this an asteroid that's relatively easy to get to, it is extremely interesting, exactly the kind of object that we want for this mission."

The international team of astronomers collaborating in the fall 2011-spring 2012 observing campaign for 1999 RQ36 have time or are applying for time on a network of telescopes operating in Arizona, the Canary Islands, Chile, Puerto Rico and space.

The new observations will not only influence mission planning and development, but will directly address two key OSIRIS-REx mission goals, Lauretta said.

One goal is to check results from ground-based observations against results from OSIRIS-REx spacecraft observations that will be made in 2019-20 as the spacecraft circles the asteroid for about 500 days.

Another goal is to measure a slight force called the "Yarkovsky effect" to better understand the likelihood that potentially hazardous near-Earth asteroids, such as 1999 RQ36, will strike our planet, and when.
http://uanews.org/node/41796
Название: OSIRIS-REx
Отправлено: instml от 10.02.2012 19:41:29
http://osiris-rex.lpl.arizona.edu/
http://uanews.org/osiris-rex

http://www.nasa.gov/centers/goddard/pdf/552572main_OSIRIS_REx_Factsheet.pdf
Название: OSIRIS-REx
Отправлено: instml от 10.02.2012 20:00:06
Цель:

(http://osiris-rex.lpl.arizona.edu/images/gallery/RQ36.jpg)

http://osiris-rex.lpl.arizona.edu/objectives_background.html

(http://osiris-rex.lpl.arizona.edu/images/choosingrq36.png)
Название: OSIRIS-REx
Отправлено: instml от 16.03.2012 17:06:06
March 13, 2012

Designing the OSIRIS-REx Mission
Цитата(http://osiris-rex.lpl.arizona.edu/images/drm.jpg)

The OSIRIS-REx team held a "DRM Walk-through" in Denver during the last week of February to discuss the details of just how the mission will operate - how all the flight maneuvers will enable the instruments to focus in on the asteroid to map its composition and topography, measure the orbital deviations, select a sample site, sample, and return the sample to Earth. Team members arrived from various cities and those not traveling to Denver participated via telecon. Overall about 60 people contributed to this productive gathering.

DRM is the acronym for Design Reference Mission - the detailed design of the mission - a detailed design of activities and maneuvers to take the spacecraft and instruments from launch in 2016 to sample return capsule re-entry in 2023.

The OSIRIS-REx mission is now in Phase B. This phase is a time for the team to look in more detail at exactly how the mission will succeed in meeting all its objectives. The walk-through provided a look at how instruments carry out the science requirements and how the flight maneuvers address the instrument needs and science objectives.

During Phase B, the instrument teams are working on the detailed engineering of the instruments. As these teams define how their instruments will operate, the back-and-forth with the engineers planning the mission details carefully define the minute-by-minute actions of the spacecraft. Built into these actions, is the flexibility to respond to unexpected discoveries at the asteroid.

The interplay of instrument needs and spacecraft capabilities and needs is quite complicated and a true balancing act. For example, aspects such as the amount of light, which are important for observations, can also affect navigation because light pressure can alter the orbit. And too much light can put more heat stress on the spacecraft, requiring us to change the mission profile to ensure we don't get one side of the spacecraft too hot.

The excitement and energy during the meeting provided wonderful creative give-and-take among team members. The team will continue to bounce needs and solutions off one another until the mission is honed to the finest details. By the Preliminary Design Review in March 2013, the details will be nailed down. By the time of Critical Design Review in May 2014, these details will be completely vetted and the plans secure.
http://osiris-rex.lpl.arizona.edu/news.html
Название: OSIRIS-REx
Отправлено: instml от 05.04.2012 10:52:35
March 30, 2012

System Definition Reviews: Key Checkpoints on the Way to a Successful Mission

Цитата(http://osiris-rex.lpl.arizona.edu/images/news1.png)

The GSRT helps the teams think through their systems, and challenges the groups to strengthen all aspects of their design.

This week the OSIRIS-REx mission team began the first of a series of meetings that will run for a month or so -- the System Definition Reviews or SDRs. Each instrument will have its own day long SDR - OCAMS, OTES, OVIRS, OLA, REXIS and even the Touch-and-go Sample Mechanism, TAGSAM. These instrument SDRs will lead up to the overall Mission Definition Review, or MDR, in May.

The System Definition Reviews are one of the key checkpoints during Formulation - the period when large NASA projects, like OSIRIS-REx, work to carefully refine their design prior to the next phase, Implementation. Formulation will continue for about another year, concluding with a series of preliminary design reviews and a confirmation review. After the transition to Implementation, we will finalize our designs and begin assembling the spacecraft and NASA will go shopping for the rocket that we will need to get off the pad in 2016.

The SDRs are our first meetings with the GSRT, or Goddard System Review Team, an independent panel of experts from Goddard Space Flight Center who will help us identify weaknesses in our plans, and point them out before they become problems. We will meet with the GSRT many times before our mission begins in just over four years.

Sometimes these formal reviews seem endless, but there is a well-established process at work here. Each review is designed to incrementally push us along towards a completed, well-thought-out mission. Right now, the system is driving us towards carefully refined requirements and the more concrete designs that will be transformed into the operational OSIRIS-REx spacecraft.

This is also a good time to mention the technical discipline that created the need for these reviews, systems engineering. Wikipedia says systems engineering "is an interdisciplinary field of engineering focusing on how complex engineering projects should be designed and managed over their life cycles." NASA was faced with the enormously complicated task of bringing together the fields of mechanical, electrical, optical, software, and chemical engineering, along with requirement to address the needs of cost control, mission and personal safety, quality and performance. Managers quickly recognized the importance of systems engineering techniques in spanning the differing (and sometimes conflicting) practices found in the individual disciplines needed to successfully launch a spacecraft.

(http://osiris-rex.lpl.arizona.edu/images/news2.png)

Cat Merrill, the Senior Systems Engineer for the OCAMS reviews the day's agenda.

David Everett is the Project Systems Engineer for OSIRIS-REx, and he helps the team navigate the reviews to satisfy NASA's systems engineering requirements. The spacecraft and each instrument team also have their own systems engineers who work to ensure their programs connect cleanly with the mission-level processes.

The SDRs we began this week are an important part of NASA's systems engineering process, and are key to helping us ensure the OSIRIS-REx mission will be a success.
http://osiris-rex.lpl.arizona.edu/news.html
Название: OSIRIS-REx
Отправлено: instml от 19.04.2012 14:27:46
NASA Mission Wants Amateur Astronomers to Target Asteroids
http://www.nasa.gov/topics/solarsystem/features/osiris-rex-update.html

(http://www.nasa.gov/images/content/639977main1_OsirisRex-Printstill1-673.jpg)
Название: OSIRIS-REx
Отправлено: instml от 19.04.2012 14:30:02
April 10, 2012
Lunar and Planetary Science Conference: Networking, the OSIRIS-REx mission, and asteroid science
ЦитатаEvery year members of the planetary science community meet in Houston, Texas to share their research, foster collaborations, and strengthen pre-existing ones. This tradition started in 1970 when scientists met to discuss work done on Moon rocks returned by the NASA Apollo missions. The annual Lunar and Planetary Science Conference (LPSC) has grown each year - this year's conference was attended by more than 1,700 scientists from all over the world. While the first conferences may have concentrated on lunar science, today a multitude of planetary science topics are covered, from studies of tiny grains of stardust that formed before the Solar System (presolar grains), to remote sensing studies of other planets, and astronomical observations of asteroids. This year the 43rd LPSC was held in conjunction with the Nuclear and Emerging Technology for Space (NETS) topical meeting to celebrate the first 50 years of nuclear-powered space flight.

(http://osiris-rex.lpl.arizona.edu/images/news4.png)

PI Dante Lauretta discusses the OSIRIS-REx mission at the LPSC.

Not only is LPSC the ideal place to talk science, it's also a great opportunity for scientists to meet with their friends and colleagues (both past and present). In this technological age it's easy to write a scientific paper with someone on another continent via email and video chat - but conferences are the perfect opportunity to sit down and talk with co-authors and collaborators face-to-face. This year's LPSC provided the perfect opportunity for OSIRIS-REx mission scientists to interact with other scientists, NASA officials, and each other.

A number of OSIRIS-REx mission team members participated, including Principal Investigator Dante Lauretta, mission sample scientist Harold Connolly Jr., spectral analysis lead Vicki Hamilton, and asteroid scientist Carl Hergenrother. Dante Lauretta spent one of the evening poster sessions talking to planetary scientists of all generations about the OSIRIS-REx mission. Team members from the Canadian Space Agency were also there to talk about their instrument OLA (OSIRIS-REx Laser Altimeter - click here to read more about it)! Dante Lauretta spoke about OSIRIS-REx the team's work in a session dedicated to the study of small bodies such as asteroids and moons (including Mars' moons, Phobos and Deimos). Dante spoke about the target for the OSIRIS-REx mission - (101955) 1999 RQ36 - a carbonaceous B-type Apollo near-Earth asteroid. He presented a characterization of the photometric properties (i.e., how the asteroid reflects light) of 1999 RQ36 at visible wavelengths including the determination of its rotation period.

The OSIRIS-REx mission wasn't the only asteroid mission represented at LPSC this year - the DAWN mission had three dedicated oral sessions where scientists working on data sent back by the DAWN spacecraft could present their results to the wider planetary science community. DAWN is a NASA spacecraft that is currently exploring and studying Vesta, one of the largest members of the asteroid belt asteroid. Dawn will depart Vesta later this year and rendezvous with the dwarf planet Ceres in early 2015. Scientists packed the conference rooms to capacity while images, spectral maps, and compositional data from the spacecraft were presented. Data collected from the mission were also compared to a group of meteorites called the HEDs which are believed to originate from Vesta; data presented at LPSC this year support this theory.

Previous conferences have had special oral sessions dedicated to other comet/asteroid missions such as STARDUST and Hayabusa. We all look forward to the year when the OSIRIS-REx mission will have its own dedicated sessions at LPSC!

View our most recent news items by visiting the news archive here!
http://osiris-rex.lpl.arizona.edu/news.html
Название: OSIRIS-REx
Отправлено: instml от 19.04.2012 14:30:45
(http://osiris-rex.lpl.arizona.edu/images/ta2.jpg)

Asteroid 2005 YU55 11/08/12.
Credit: UA/LPL/Catalina Sky Survey/R. Hill.

(http://osiris-rex.lpl.arizona.edu/images/ta3.jpg)

Amateur astronomer Tim Hunter.
Credit: Tim Hunter.

April 16, 2012
AMATEUR ASTRONOMERS WILL 'TARGET ASTEROIDS!'
ЦитатаAmateur astronomers are about to make observations that will affect current and future space missions to asteroids.

Some will use custom-made, often automated, telescopes equipped with CCD cameras in their backyards. Others will use home computers to make remote observations with more powerful telescopes states or continents away. Many belong to leading national and international amateur astronomy organizations with members ranging from retirees to school kids.

Researchers on NASA's robotic asteroid sample return mission, OSIRIS-REx, are turning to amateur astronomers for new data on near-Earth asteroids in a citizen science observing campaign called "Target Asteroids!" The campaign starts in April 2012 and will last at least to the end of this decade.

The full name of the OSIRIS-REx mission is Origins Spectral Interpretation Resource Identification Security - Regolith Explorer. The OSIRIS-REx spacecraft is to launch in 2016, reach a well-characterized primitive asteroid called (101955) 1999 RQ36 in 2019, examine that body up close during a 505-day rendezvous, then return at least 60 grams of it to Earth in 2023.

"Asteroids are a rich and accessible historic archive of the origin of our Solar System and life, a valuable source of mineral resources, and potentially hazardous Earth impactors that civilization must learn to deal with," said OSIRIS-REx Principal Investigator Dante Lauretta of the University of Arizona. "Our mission will address all these issues."

1999 RQ36 -- a 500-meter-diameter, dark carbonaceous asteroid -- is difficult for even powerful Earth-based telescopes to observe at this time because it is relatively distant from Earth.

Amateur astronomers are asked to observe asteroids selected because they are in near-Earth orbits that can be reached by current-generation spacecraft and are at least 200 meters in diameter, said Target Asteroids! scientist Carl Hergenrother, head of the OSIRIS-REx astronomy working group.

Precise orbits, sizes, rotation rates, physical composition and other important characteristics for these asteroids are largely unknown. Seventy-four asteroids are listed now, but the list will grow as observers get more information on known asteroids and discover new ones, Hergenrother said.

"We want amateur astronomers to do astrometry (which precisely measures positions of objects), photometry (which measures brightness) and spectroscopy (which measures the colors, or wavelengths, of light) to discover as much as we can about these objects," he said.

"These will be challenging objects to observe because they are very faint," said Target Asteroids! coordinator Dolores Hill of the OSIRIS-REx education and public outreach program. "Amateur astronomers may have to make what are called 'track and stack' observations," a technique that acquires and adds multiple short images.

"One of the major goals of having amateur astronomers on board is they can observe these objects every night, unlike professional astronomers who may get to telescopes once every few nights, or more typically once a month or every three months," Hergenrother said.

People don't need to own their own telescopes or live under clear skies to work on Target Asteroids!, Hergenrother and Hill emphasized.

For not much money, observers can now go online and sign up to use a growing network of quality robotic telescopes sited at some of the choicest astronomical spots in the country, they added.

Scientists will compare data from amateur and professional astronomers' ground-based observations with data from OSIRIS-REx spacecraft instruments to learn more about Earth-crossing asteroids and identify likely candidates for future asteroid missions, they said.

"The OSIRIS-REx mission truly is a 'ground truth' mission, the connection between meteorites on the ground and asteroids that are still orbiting the sun that could hit the ground," Hill said.

Not long ago, astronomers disparaged asteroids as the "vermin of the skies," said Ed Beshore, OSIRIS-REx deputy principal investigator. Astronomers saw asteroids as bothersome "noise," unwanted streaks of light that contaminated their photographic views of celestial objects farther out in the cosmos.

That thinking changed when people realized how much damage near-Earth asteroids can do when they hit Earth as meteorites, Beshore said.

For example, sophisticated mathematical modeling shows that the chunk of meteorite that blasted 1.25-kilometer-wide Meteor Crater out of northern Arizona's Colorado Plateau about 50,000 years ago was less than 70 meters wide. Granted, that space rock was a rare iron-nickel meteorite that carried a much greater wallop than a stony or carbonaceous meteorite of the same size would have had. But still, that's impressive.

Until Beshore was named OSIRIS-REx deputy principal investigator earlier this year, he directed the University of Arizona's Catalina Sky Survey. This NASA-funded survey has led the world in searching for potentially hazardous NEOs, or near-Earth objects, since 2005. Amateur astronomers have helped enormously by providing follow-up observations that find orbits of newly discovered asteroids, Beshore said.

"Amateur astronomy today is much different than it was, say, even in the mid-1990s," Beshore said. "The amateur astronomy community working now is extremely sophisticated. They have more advanced computers. They have developed a tremendous number of turnkey solutions to automate their telescopes. And they now can rent telescopes larger than most amateurs can afford.

"You've got a lot of dedicated amateurs out there who really are working like professionals, making serious contributions to the field," he said.

"Frankly, if they wanted to, many could probably get jobs as professionals. But they're probably making more money doing what they're doing at their day jobs."

Target Asteroids! partner organizations so far include:

    * The International Astronomical Search Collaboration, or IASC, http://iasc.hsutx.edu/ . The IASC is an educational outreach program that provides free, donated telescope time to amateur astronomers from 30 high schools and colleges in five countries for asteroid observations. Students in the United States and Poland are already analyzing results on one of the Target Asteroids! that IASC members made using a 1.3-meter telescope at Kitt Peak National Observatory near Tucson last February, Hill said.
    * Astronomical League, http://www.astroleague.org/ . An umbrella organization of about 140 amateur astronomy organizations across the United States. Based in Kansas City, Mo., it promotes astronomy by encouraging public interest via local astronomy clubs.
    * Association of Lunar & Planetary Observers, http://alpo-astronomy.org/ Founded in 1947, this organization facilitates research by both professional and amateur astronomers working in lunar, planetary and solar astronomy. Members and section coordinators are scattered all over the world.
    * Oceanside Photo and Telescope, or OPT, http://www.optcorp.com/edu One of the largest telescope retailers in the world, based in Oceanside, Calif., OPT provides technical expertise and astronomy equipment to educators and organizations across the country.
    * NASA Night Sky Network, http://nightsky.jpl.nasa.gov A nationwide coalition of amateur astronomy clubs that provide information about NASA missions and host astronomy events for the general public. The Night Sky Network is sponsored and supported by the NASA Jet Propulsion Laboratory's "PlanetQuest" program.
    * University of Arizona Mt. Lemmon SkyCenter, http://skycenter.arizona.edu This University of Arizona science center is located where astronomical seeing is outstanding, at the 9,200-foot summit of Mount Lemmon in the Santa Catalina Mountains north of Tucson. It offers both nightly public astronomy programs and opportunities for remote observing using the 32-inch Schulman telescope and 24-inch Beshore telescope. The SkyCenter is a partner in the Sierra Stars Observing Network, http://www.sierrastars.com , a widening network of professional observatories working to make advanced imaging capabilities available to amateur astronomers at modest cost.
    * The Catalina Sky Survey, University of Arizona Lunar and Planetary Laboratory, http://www.lpl.arizona.edu/css The Catalina Sky Survey has been the most successful near-Earth object survey for several years running. This survey discovered 586 near-Earth asteroids, or 65 percent of all NEO discoveries made in 2011. In fall 2008, CSS scientists became the first to observe an asteroid on a collision course with the Earth, allowing that object to be tracked and eventually recovered as meteorites in the Sudan's Nubian Desert.

Click here to visit the Target Asteroids! webpage.

Click here to read the official NASA press release.

Contact Hergenrother and Hill for more information about Target Asteroids! by e-mail to Target_Asteroids@lpl.arizona.edu .
http://osiris-rex.lpl.arizona.edu/news.html
Название: OSIRIS-REx
Отправлено: instml от 27.04.2012 02:44:03
Все смотрим в космос
19.04.2012
ЦитатаС сегодняшнего дня под эгидой NASA разворачивается проект по поиску околоземных объектов - астероидов, изредка проходящих близко к Земле. Астрономы-любители помогут лучше изучить свойства популяции астероидов, их скорость вращения и изменения в отражательной способности. Астрономы-профессионалы затем используют эти данные  для улучшения моделей таких объектов, в число которых входит астероид 1999 RQ36. Во многом с ним связан новый проект, он должен помочь в подготовке аппарата OSIRIS-Rex.
http://www.cosmos-journal.ru/news/821/
Название: OSIRIS-REx
Отправлено: instml от 14.05.2012 17:35:30
ASC's 3D Flash LIDAR camera selected for OSIRIS-REx asteroid mission
May 13th, 2012 by Chris Bergin

(http://www.nasaspaceflight.com/wp-content/uploads/cache/24395_single.jpg)

The Advanced Scientific Concepts (ASC) 3D Flash LIDAR (Light Detection And Ranging) range cameras have been selected for the OSIRIS-REx planetary science mission that will return a sample of the carbonaceous asteroid 1999 RQ36. The mission - launching in 2016 - is aiming to return the asteroid sample to Earth in 2023.

http://www.nasaspaceflight.com/2012/05/ascs-lidar-camera-osiris-rex-asteroid-mission/
Название: OSIRIS-REx
Отправлено: instml от 26.05.2012 20:54:39
Asteroid Nudged by Sunlight: Most Precise Measurement of Yarkovsky Effect
05.24.12
 
ЦитатаScientists on NASA's asteroid sample return mission, Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-REx), have measured the orbit of their destination asteroid, 1999 RQ36, with such accuracy they were able to directly measure the drift resulting from a subtle but important force called the Yarkovsky effect - the slight push created when the asteroid absorbs sunlight and re-emits that energy as heat.

"The new orbit for the half-kilometer (one-third mile) diameter 1999 RQ36 is the most precise asteroid orbit ever obtained," said OSIRIS-REx team member Steven Chesley of the NASA Jet Propulsion Laboratory, Pasadena, Calif. He presented the findings May 19 at the Asteroids, Comets and Meteors 2012 meeting in Niigata, Japan.

(http://www.nasa.gov/images/content/652723main1_PIA15776-673.jpg)

These series of radar images of asteroid 1999 RQ36 were obtained by NASA's Deep Space Network antenna in Goldstone, Calif. on Sept 23, 1999. (Credit: NASA/JPL-Caltech)

Observations that Michael Nolan at Arecibo Observatory in Puerto Rico made in September 2011, along with Arecibo and Goldstone radar observations made in 1999 and 2005, when 1999 RQ36 passed much closer to Earth, show that the asteroid has deviated from its gravity-ruled orbit by roughly 100 miles, or 160 kilometers, in the last 12 years, a deviation caused by the Yarkovsky effect.

The Yarkovsky effect is named for the nineteenth-century Russian engineer who first proposed the idea that a small rocky space object would, over long periods of time, be noticeably nudged in its orbit by the slight push created when it absorbs sunlight and then re-emits that energy as heat.

"The Yarkovsky force on 1999 RQ36 at its peak, when the asteroid is nearest the sun, is only about a half ounce - about the weight of three grapes on Earth. Meanwhile, the mass of the asteroid is estimated to be about 68 million tons. You need extremely precise measurements over a fairly long time span to see something so slight acting on something so huge."

Nolan and his team measured the distance between the Arecibo Observatory and 1999 RQ36 to an accuracy of 300 meters, or about a fifth of a mile, when the asteroid was 30 million kilometers, or 20 million miles, from Earth.

"That's like measuring the distance between New York City and Los Angeles to an accuracy of two inches, and fine enough that we have to take the size of the asteroid and of Arecibo Observatory into account when making the measurements," Nolan said.

Chesley and his colleagues used the new Arecibo measurements to calculate a series of 1999 RQ36 approaches closer to Earth than 7.5 million kilometers (4.6 million miles) from the years 1654 to 2135. There turned out to be 11 such encounters.

By combining the radar results from Arecibo Observatory with infrared results from NASA's Spitzer Space Telescope, the scientists also learned that asteroid 1999 RQ36 is very light - it has around the same density as water, Chesley reported.

"This study is an important step in better understanding the Yarkovsky effect -- a subtle force that contributes to the orbital evolution of new Near-Earth Objects," said Dante Lauretta, the mission's principal investigator and professor of planetary science at the University of Arizona.

Lauretta added that "this information is critical for assessing the likelihood of an impact from our target asteroid and provides important constraints on its mass and density, allowing us to substantially improve our mission design."

The OSIRIS-REx spacecraft is to launch in 2016, reach asteroid (101955) 1999 RQ36 in 2019, examine it up close during a 505-day rendezvous, then return at least 60 grams (~1.9 ounces) of it to Earth in 2023.

"In addition to the exciting Yarkovsky results, the low density shows that 1999 RQ36 is probably a loose aggregate of rocks--a so called rubble pile," said Jason Dworkin, the mission's project scientist and Chief of Astrochemistry at NASA's Goddard Space Flight Center in Greenbelt, Md. "This makes it an ideal target for OSIRIS-REx to collect loose surface material."

(http://www.nasa.gov/images/content/639977main1_OsirisRex-Printstill1-673.jpg)

NASA's Goddard is responsible for overall mission management for the OSIRIS-REx project. The Lunar and Planetary Laboratory at the University of Arizona in Tucson leads the science mission. Lockheed Martin Space Systems in Denver will build and operate the spacecraft. OSIRIS-REx is the third mission in NASA's New Frontiers Program. NASA's Marshall Space Flight Center in Huntsville, Ala., manages New Frontiers for the agency's Science Mission Directorate in Washington.

For more information about the OSIRIS-REx mission, visit: http://osiris-rex.lpl.arizona.edu/
http://www.nasa.gov/topics/universe/features/yarkosky-asteroid.html
Название: OSIRIS-REx
Отправлено: instml от 26.05.2012 20:56:31
NASA Scientist Figures Way to Weigh Space Rock
Цитата(http://www.nasa.gov/images/content/652932main_asteroid1999RQ36-673.jpg)

This computer generated image of asteroid 1999 RQ36 was derived from data acquired by the NASA-supported Arecibo Observatory in Puerto Rico. Image credit: NASA/NSF/Cornell/Nolan

A scientist at NASA's Jet Propulsion Laboratory in Pasadena, Calif., has accurately determined the mass of a nearby asteroid from millions of miles away. The celestial equivalent of "guess your weight" was achieved by Steve Chesley of JPL's Near-Earth Object Program Office by utilizing data from three NASA assets - the Goldstone Solar System Radar in the California desert, the orbiting Spitzer Space telescope, and the NASA-sponsored Arecibo Observatory in Puerto Rico.

Chesley presented his findings this past Saturday, May 19, at the Asteroids, Comets and Meteors 2012 meeting in Niigata, Japan.

For Chesley to define the asteroid's mass, he first needed to understand its orbit and everything that could affect that orbit -- including neighboring celestial bodies and any propulsive force (however minute) the asteroid could generate.

Incorporating extraordinarily precise observations collected by astronomer Michael Nolan at Arecibo Observatory in September 2011, Arecibo and Goldstone radar observations made in 1999 and 2005, and the gravitational effects of the sun, moon, planets and other asteroids, Chesley was able to calculate how far the asteroid deviated from its anticipated orbit. He found that 1999 RQ36 had deviated from the mathematical model by about 100 miles (160 kilometers) in the past 12 years. The only logical explanation for this orbital change was that the space rock itself was generating a minute propulsive force known in space rock circles as the Yarkovsky effect.

The Yarkovsky effect is named for the 19th-century Russian engineer who first proposed the idea that a small, rocky space object would, over long periods of time, be noticeably nudged in its orbit by the slight push created when it absorbs sunlight and then re-emits that energy as heat. The effect is hard to measure because it's so infinitesimally small.

"At its peak, when the asteroid is nearest the sun, the Yarkovsky force on 1999 RQ36 is only about a half ounce -- around the weight of three grapes," said Chesley. "When you're talking about the force of three grapes pushing something with a mass of millions of tons, it takes a lot of high-precision measurements over a long time to see any orbital changes. Fortunately, the Arecibo Observatory provided a dozen years of great radar data, and we were able to see it."

The final piece to the puzzle was provided by Josh Emery of the University of Tennessee, Knoxville, who used NASA's Spitzer Space Telescope in 2007 to study the space rock's thermal characteristics. Emery's measurements of the infrared emissions from 1999 RQ36 allowed him to derive the object's temperatures. From there he was able to determine the degree to which the asteroid is covered by an insulating blanket of fine material, which is a key factor for the Yarkovsky effect.

With the asteroid's orbit, size, thermal properties and propulsive force (Yarkovsky effect) understood, Chesley was able to perform the space rock scientist equivalent of solving for "X" and calculate its bulk density.

"While 1999 RQ36 weighs in at about 60 million metric tons, it is about a half kilometer across," said Chesley. "That means it has about the same density as water, so it's more than likely a very porous jumble of rocks and dust."

Asteroid 1999 RQ36 is of particular interest to NASA as it is the target of the agency's OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer) mission. Scheduled for launch in 2016, ORIRIS-Rex will visit 1999 RQ36, collect samples from the asteroid and return them to Earth.

NASA detects, tracks and characterizes asteroids and comets passing relatively close to Earth using both ground- and space-based telescopes. The Near-Earth Object Observations Program, commonly called "Spaceguard," discovers these objects, characterizes a subset of them, and establishes their orbits to determine if any could be potentially hazardous to our planet. JPL manages the Near-Earth Object Program Office for NASA's Science Mission Directorate in Washington. JPL is a division of the California Institute of Technology in Pasadena. JPL also manages the Spitzer Space Telescope and Goldstone Solar System Radar.

More information about asteroids and near-Earth objects is at: http://www.jpl.nasa.gov/asteroidwatch .
http://www.nasa.gov/mission_pages/asteroids/news/asteroid20120524.html
Название: OSIRIS-REx
Отправлено: dee34rt от 26.05.2012 23:18:13
ЦитатаЕвропа вообще должна быть целью номер 1. Но сначала срезали Европу Орбитер, потом JIMO теперь и с Лапласом непонятки. Что то странное. А метеорного вещества и на земле валом и Хаябуса со Стардастом привезли. И Хаябуса-2 намечается.

Мне кажется, что все-таки Титан. Есть атмосфера, позволяющая находится там без скафандра, нет радиации как на Европе.
Название: OSIRIS-REx
Отправлено: instml от 26.05.2012 22:22:11
Без скафандра...? А температуру атмосферы знаете? :D
Название: OSIRIS-REx
Отправлено: dee34rt от 26.05.2012 23:27:23
ЦитатаБез скафандра...? А температуру атмосферы знаете? :D

Это уже не такой скафандр. В моём понимании вообще не скафандр. Не тот, что несколько миллионов$  стоит  :D
Название: OSIRIS-REx
Отправлено: instml от 29.05.2012 11:24:38
ЦитатаAsteroid Nudged by Sunlight: Most Precise Measurement of Yarkovsky Effect
05.24.12
http://www.nasa.gov/topics/universe/features/yarkosky-asteroid.html
Как сильно Солнце подталкивает астероиды?
ЦитатаИсследователям НАСА удалось с беспрецедентной точностью измерить, с какой силой эффект Ярковского влияет на траекторию астероида. Точное предсказание конкретного влияния может иметь ключевое значение для нашей осведомлённости о потенциально опасных для Земли небесных телах.

При подготовке миссии OSIRIS-REx группе исследователей НАСА пришлось максимально точно вычислить орбиту астероида 1999 RQ36 и определить влияние на неё различных сил, в том числе эффекта Ярковского -- дрейфа астероида под действием светового давления светила и последующей отдачи тепла в космос (когда нагретая сторона небесного тела отворачивается от Солнца).

Выяснилось, что 1999 RQ36, диаметром в 0,5 км, за 12 лет наблюдений (со дня своего открытия) изменил орбиту под действием эффекта Ярковского на 160 км. Что неожиданно много: если бы мы следили за этим телом 12 млн лет, его орбита изменилась бы на 160 млн км.

Эти данные очень значимы в свете того, что, по некоторым моделям, Земля систематически захватывает в качестве временных астероиды по 100 и более км в диаметре, часть из которых потом падает на её поверхность. Естественно, человечеству требуется некоторое время для реализации защитных мероприятий в случае осуществления такого сценария. Однако раньше долговременный расчёт орбиты астероида был невозможен: слишком большое влияние на неё оказывал эффект Ярковского. Земные же инструменты были не слишком точны. В итоге «правильных» предсказаний орбит этих небезопасных для нас небесных тел на срок, превышающий «несколько лет», просто не существовало.

Теперь, похоже, ситуация может измениться. Авторы работы представили результаты своих наблюдений на встрече, посвящённой астероидам, кометам и метеорам, которая прошла в Ниигате (Япония).

Ранние трудности в измерении эффекта Ярковского были вызваны его малой величиной; так, в случае 1999 RQ36 приданная им тяга эквивалентна 0,15 Н. «Это примерно равно весу трёх виноградин на Земле, в то время как масса астероида оценивается в 68 млн тонн. Нужны экстремально точные измерения, проводимые приличное время, чтобы увидеть нечто столь медленно и слабо воздействующее на такое внушительное тело», -- отмечает Майкл Нолан из обсерватории Аресибо в Пуэрто-Рико, один из участников исследования. К примеру, дистанцию от Земли до астероида надо было измерить с точностью до одной стомиллионной, то есть ошибка не должна превышать 300 м, и это при удалении от небесного тела в 30 млн км.

Так вот, выяснилось, что в период между 1654 и 2135 годом астероид приближался к Земле на 7,5 млн км, а общее число сближений за 500 лет составляет 11 раз. Средняя плотность астероида оказалась необычной -- примерно равной плотности воды в земных условиях.

Информация по орбите и плотности 1999 RQ36 принципиальна для подготовки миссии OSIRIS-REx, предназначенной для доставки с астероида грунта. Проект был выбран на конкурсной основе по НАСА-программе «Новые рубежи» (New Frontiers). OSIRIS-REx стартует в 2016 году, в 2019-м аппарат нагонит астероид и заберёт с него образцы грунта (скорее всего, пыли и льда), а к 2023 году вернётся на Землю.
http://science.compulenta.ru/682069/
Название: OSIRIS-REx
Отправлено: instml от 05.07.2012 14:00:45
Согласно www.lpi.usra.edu/pss/may2012/presentations/1Green_PSS_status.pdf запуск планируется в сентябре 2016
Название: OSIRIS-REx
Отправлено: instml от 06.07.2012 22:40:37
OSIRIS-Rex (Beth Clark Joseph, Ithaca College)
http://www.lpi.usra.edu/sbag/meetings/jan2012/presentations/1000_Clark.pdf
Название: OSIRIS-REx
Отправлено: instml от 05.09.2012 04:31:58
NASA Announces Asteroid Naming Contest for Students
http://www.nasa.gov/topics/solarsystem/features/name-asteroid.html

НАСА предложило школьникам придумать название для астероида
ЦитатаМОСКВА, 4 сен - РИА Новости. Американское аэрокосмическое агентство НАСА объявило конкурс среди школьников всего мира на лучшее название для астероида 1999 RQ36, куда в 2016 году отправится зонд OSIRIS-REx для того, что бы с помощью манипулятора собрать образцы с его поверхности, а затем доставить их на Землю.

Участники конкурса, которыми могут стать школьники из любой страны мира младше 18 лет, должны до 2 декабря 2012 года представить жюри название астероида (длиной не более 16 букв), а также краткое объяснение этого названия и обоснование своего выбора.

"Мы с нетерпением ждем, когда мы получим имя, которое будет легче произнести, чем 1999 RQ36", - говорит Данте Лауретта (Dante Lauretta), научный руководитель миссии OSIRIS-REx.

Первый приз конкурса получит школьник, чей вариант названия для астероида будет принят Комитетом по названиям малых тел Солнечной системы Международного астрономического союза.

Астероид (101955) 1999 RQ36 был открыт в 1999 году участниками проекта LINEAR (Lincoln Near Earth Asteroid Research) в лаборатории Линкольна Массачусетского технологического института. Размер этого небесного тела составляет около 500 метров. Астероид богат углеродом, ключевым элементом для всех органических молекул. Такие молекулы ранее находили в метеоритах и образцах с комет. Ученые рассчитывают выяснить, есть ли такие вещества на RQ36.

Американский "астероидный проект" под названием OSIRIS-REx (Origins-Spectral Interpretation-Resource Identification-Security-Regolith Explorer - "происхождение - спектральная интерпретация - обнаружение ресурсов - безопасность - исследователь реголита") был выбран из числа трех других программ, в числе которых были программа по доставке образцов с обратной стороны Луны и миссия по исследованию поверхности Венеры.

Для США это будет первая программа исследования астероида с помощью автоматического зонда, ранее такой проект успешно осуществила Япония: стартовавший в 2003 году зонд "Хаябуса" совершил посадку на астероид Итокава, а в середине июня 2010 года капсула зонда приземлилась в австралийской пустыне, в ней были обнаружены частицы вещества астероида.

Аппарат приблизится к астероиду 1999 RQ36 к 2020 году. Оставаясь в пяти километрах от астероида OSIRIS-REx в течение шести месяцев будет тщательно картировать поверхность небесного тела, после чего ученые смогут выбрать место, откуда с помощью будет взят образец вещества массой около 60 граммов. Затем он будет помещен в капсулу, которая, как ожидается, совершит посадку на полигоне в штате Юта в 2023 году.
http://ria.ru/science/20120904/743217391.html
Название: OSIRIS-REx
Отправлено: instml от 05.09.2012 04:36:06
ЦитатаДля США это будет первая программа исследования астероида с помощью автоматического зонда, ранее такой проект успешно осуществила Япония: стартовавший в 2003 году зонд "Хаябуса" совершил посадку на астероид Итокава, а в середине июня 2010 года капсула зонда приземлилась в австралийской пустыне, в ней были обнаружены частицы вещества астероида.
:)
Название: OSIRIS-REx
Отправлено: instml от 02.12.2012 07:36:22
Видео (Lockheed Martin)

Asteroids and the OSIRIS-REx Mission


http://www.youtube.com/watch?v=HLz1CeBKb7M
Название: OSIRIS-REx
Отправлено: scream от 08.02.2013 16:47:40
Американское аэрокосмическое агентство (НАСА) планирует отправить к астероиду 1999 RQ36 в 2018 году зонд OSIRIS-REx, который измерит силу так называемого эффекта Ярковского -- сдвига орбиты астероида в результате нагрева одной из его сторон Солнцем, что позволит точно оценить их опасность для Земли, сообщает пресс-служба агентства.

"К примеру, солнечная сторона кирпичного здания остается теплой даже в поздние вечерние часы, так как она в это время излучает тепло, накопленное за день. Аналогичным образом астероиды излучают тепло на своей "вечерней" стороне, в результате чего создается слабая реактивная тяга, "сталкивающая" небесное тело с его орбиты", -- пояснил руководитель проекта OSIRIS-REx Эдвард Бешор (Edward Beshore) из университета Аризоны в Тусоне (США).

Эффект Ярковского, наряду с гравитационным взаимодействием Земли и пролетающих мимо ее астероидов, считается одной из причин того, почему на нашу планету упало гораздо больше небесных тел, чем на то указывают расчеты. Точная оценка силы этого эффекта необходима для понимания того, как меняются орбиты астероидов, и какую опасность наши ближайшие "соседи", такие как Апофис (2004 MN4) или микроастероид 2012 DA14, могут нести для жизни на Земле.

Как утверждают специалисты НАСА, силу эффекта Ярковского из-за его небольшой мощности практически невозможно измерить при помощи наземных инструментов. По этой причине НАСА планирует запустить в 2018 новый зонд OSIRIS-REx, который отправится к астероиду 1999 RQ36 и проследит за изменениями в скорости движения этого небесного тела и в его орбите, которые произойдут благодаря эффекту Ярковского.

Первоначальной целью данного аппарата, запуск которого был ранее намечен на 2016 год, является картографирование астероида и забор пробы грунта, которую OSIRIS-REx попытается доставить обратно на Землю. Как полагают астрономы, замеры силы эффекта Ярковского и фрагменты 1999 RQ36 помогут им разработать алгоритм, который позволит определять, как будут меняться орбиты других астероидов в результате "подогрева" Солнцем.
http://ria.ru/science/20130208/921926255.html#13603270746703&message=resize&relto=register&action=addClass&value=registration
Название: OSIRIS-REx
Отправлено: instml от 09.02.2013 13:07:02
Цитатаscream пишет:
Американское аэрокосмическое агентство (НАСА) планирует отправить к астероиду 1999 RQ36 в 2018 году зонд OSIRIS-REx, который измерит силу так называемого эффекта Ярковского -- сдвига орбиты астероида в результате нагрева одной из его сторон Солнцем, что позволит точно оценить их опасность для Земли, сообщает пресс-служба агентства.
Запуск в 2018 - бредятина, откуда они такое взяли? Журноламеры фиговы.

Scheduled for launch in 2016, OSIRIS-REx will arrive at RQ36 in 2018 and orbit the asteroid until 2021. By communicating continuously with a spacecraft in orbit around RQ36, the team will get a much better idea of the asteroid's orbit.
Название: OSIRIS-REx
Отправлено: instml от 09.02.2013 13:13:20
New NASA Mission to Help Us Better Estimate Asteroid Impact Hazard

02.07.13

http://www.nasa.gov/images/content/723589main_Osiris_1999_RQ36.jpg

http://www.nasa.gov/images/content/723598main_SRC_to_Earth.jpg

Every year, sensors designed to detect nuclear explosions see harmless bursts in Earth's upper atmosphere fr om the breakup of an asteroid a few yards across. Tiny asteroids are much more numerous than big ones, so destructive hits to Earth are very rare. However, because of their potential for devastation, NASA's Near-Earth Object (NEO) observations program (http://neo.jpl.nasa.gov/) supports surveys which are undertaking sustained searches to find the largest objects and predict their impact threat to Earth.
 
 According to NASA's NEO program, there are more than 1,300 "Potentially Hazardous Asteroids" (PHAs) - objects at least 150 yards (about 140 meters) across with a very small chance of impacting us someday because their orbital paths take them close to Earth's orbit.
 
 "Asteroids move at an average of 12 to 15 kilometers per second (about 27,000 to 33,000 miles per hour) relative to Earth, so fast that they carry enormous energy by virtue of their velocity," says Edward Beshore of the University of Arizona, Tucson, deputy principal investigator for NASA's OSIRIS-REx asteroid sample return mission. "Anything over a few hundred yards across that appears to be on a collision course with Earth is very worrisome."
 
 The main difficulty is obtaining sufficient observations to be able to predict their orbits with enough certainty to find out if they could hit us at some point.
 
 "When an asteroid makes a close pass to Earth, the gravitational pull fr om our planet changes the asteroid's orbit," says Beshore. "However, how this change will affect the evolution of the asteroid's orbit is difficult for us to predict because there are also other small forces continuously acting on the asteroid to change its orbit. The most significant of these smaller forces is the Yarkovsky effect - a minute push on an asteroid that happens when it is warmed up by the sun and then later re-radiates this heat in a different direction as infrared radiation."
 
 The Yarkovsky effect happens simply because it takes time for things to heat up and cool down. Objects tend to be coldest just before dawn and warmest at mid-afternoon, after hours of illumination by the high sun. "A brick building can feel warm even in the early evening hours, because it is radiating away the heat accumulated from an entire day of sunshine," says Beshore. In the same way, an asteroid radiates most of its heat from its late "afternoon side", giving it the small Yarkovsky push which is variable depending mostly on the asteroid's size, shape and composition.
 
 NASA's OSIRIS-REx mission (Origins, Spectral Interpretation, Resource Identification, Security, and Regolith Explorer) will make the most precise measurements of the Yarkovsky effect to date by visiting a PHA called "1999 RQ36" or just "RQ36."

"For such a large object, it has one of the highest known probabilities of impacting Earth, a 1 in 2,400 chance late in the 22nd century, according to calculations by Steve Chesley, an astronomer at NASA's Jet Propulsion Laboratory," said Beshore. RQ36 is about 457 meters (500 yards) across.
 
 The best measurements of the Yarkovsky effect are made when an asteroid's position is precisely known. "If an asteroid comes very close, we can get radar observations on it," says Beshore. "With radar measurements, we get very good data on its range and therefore can constrain one aspect of its orbit very well. If we can get that measurement a couple of times (or more) over a few years, it helps us understand its orbital behavior and we can start to make an estimate of the Yarkovsky effect. We estimate the position of the asteroid and what its orbit must be like by using Newtonian and Relativistic physics. If we see a deviation from the estimated position, then it must be due to the sum of all these other small forces, and the greatest of these we believe to be the Yarkovsky effect."
 
 Measurements like these enabled the team to estimate the very small force of the Yarkovsky effect on RQ36 - about equal to the weight felt when holding three grapes, according to Beshore. "Although very small, this force is constant and adds up over time to significantly change the asteroid's orbit," adds Beshore.
 
 Scheduled for launch in 2016, OSIRIS-REx will arrive at RQ36 in 2018 and orbit the asteroid until 2021. By communicating continuously with a spacecraft in orbit around RQ36, the team will get a much better idea of the asteroid's orbit.
 
 "We expect OSIRIS-REx will enable us to make an estimate of the Yarkovsky force on RQ36 at least twice as precise as what's available now," says Jason Dworkin, OSIRIS-REx project scientist at NASA's Goddard Space Flight Center in Greenbelt, Md.

The team will use what it learns about the Yarkovsky effect on RQ36 to help estimate the effects on other asteroids. "What we want to be able to do is create a model that says okay if you give me an asteroid of this size, made of this composition, with this kind of topography, I can estimate for you what the Yarkovsky effect will be," says Beshore. "So now I can probably come up with a better notion of what to expect from other asteroids that I don't have the good fortune to have a spacecraft around."
 
 Given that OSIRIS-REx lets us better model the Yarkovsky effect, and we discover an asteroid that might hit us someday, what if anything can be done about it?
 
 "There are several mitigation strategies," says Beshore. "We could explode a small nuclear device close above the surface on one side of the asteroid. This could be very effective - it would vaporize the surface layer, which would then fly off at very high speed, causing a rocket thrust that would shove everything over by a few centimeters per second. This might be plenty to deflect the asteroid. Other strategies include kinetic impactors, wh ere you strike an asteroid very hard with a heavy projectile moving at high speed. In 2005, NASA's Deep Impact mission hit comet Tempel 1 with a 370-kilogram (over 815-pound) copper slug at about five kilometers per second (over 11,000 miles per hour), not nearly enough to significantly alter the orbit of the five-kilometer-sized body, but a proof of the technology for this kind of mission. Another idea is to use a gravity tractor - station a spacecraft precisely enough near the asteroid which would gradually deflect it with only its gravitational pull."
 
 The key to all these strategies is to discover the asteroid well in advance of its impact date and attempt to deflect it early, according to Beshore. "If you're trying to deflect an arrow, you wouldn't need to apply much force to the arrow to make it widely miss the target if you could deflect it as it left the bow," says Beshore. "On the other hand, if you had to deflect it right before it hit the target, you'd need to push on it a whole lot more to get it out of the way."
 
 One of the first things that would be done if an asteroid appeared to be on a collision course with Earth is to send a probe to the asteroid that might look very much like OSIRIS-REx, according to Beshore. "You want to characterize it first to choose the correct deflection strategy," says Beshore. "For example, we know the density of RQ36 is about 1 gram per cubic centimeter, over two times less than solid rock. This means it is probably a rubble pile - a collection of boulders, rocks, and dust loosely held together by gravity. Some deflection strategies might be ineffective with this kind of asteroid."
 
 OSIRIS-REx will determine if RQ36 is actually a rubble pile by orbiting it and revealing the subtle effects on the orbit from the gravity of any large and dense lumps within the asteroid. A probe like OSIRIS-REx could map the internal structure of an asteroid this way, providing valuable information on wh ere to target the deflection mechanism.

OSIRIS-REx will also determine the composition of RQ36 using remote measurements from both visible light and infrared spectrometers, and by collecting a sample of material from the asteroid's surface and returning it to Earth for study. Since the Yarkovsky effect may vary depending on the type of material and its distribution, a probe with OSIRIS-REx's capability to map the surface composition will enable a more precise estimate of the Yarkovsky effect on the asteroid's orbit.
 
 The mission will also provide critical experience navigating around asteroids. "We don't have a lot of experience doing precise maneuvers near one of these objects with very small gravity," says Beshore. "It's not easy to stay in orbit around it - this asteroid's gravitational pull is so weak, the push from sunlight on our spacecraft's solar panels will be roughly similar to the amount of force from the gravity of RQ36 itself. We have to factor in a lot of these forces to navigate and operate around an asteroid. With OSIRIS-REx, we'll generate a set of techniques and technologies for any mission that would go to an asteroid to characterize it in advance of a mitigation mission."
 
 The OSIRIS-REx mission is led by Principal Investigator Dante Lauretta of the University of Arizona, supported by a science team of Co-Investigators from multiple institutions, with project management at NASA's Goddard Space Flight Center, Greenbelt, Md., and development partnership with Lockheed Martin Space Systems, Littleton, Colo. International contributions are provided by the Canadian Space Agency. The OSIRIS-REx mission was selected under the NASA New Frontiers program, managed by NASA's Marshall Space Flight Center, Huntsville, Ala., and funded by NASA's Science Mission Directorate, NASA Headquarters, Washington.
 
 › More information about OSIRIS-REx (http://osiris-rex.lpl.arizona.edu/)


http://www.nasa.gov/topics/solarsystem/features/osiris-rex-security.html
Название: OSIRIS-REx
Отправлено: instml от 09.02.2013 13:15:56
http://osiris-rex.lpl.arizona.edu/?q=news
Название: OSIRIS-REx
Отправлено: instml от 09.02.2013 13:23:07
OSIRIS-REx Team Flies in Near Zero-G
http://osiris-rex.lpl.arizona.edu/?q=node/537

One Close Fly-by: DA14 - What We Learn from NEOs
http://osiris-rex.lpl.arizona.edu/?q=node/540

Hubble and Spitzer telescopes team up to look at 1999 RQ36
http://osiris-rex.lpl.arizona.edu/?q=node/521
Название: OSIRIS-REx
Отправлено: instml от 02.04.2013 21:03:36
The OSIRIS-REx Mission is Good to Go!

April 2, 2013

                                After a year of preparation, the OSIRIS-REx team successfully completed the Preliminary Design Review (PDR), a major milestone for the mission. Principal Investigator, Dante Lauretta, made the announcement on March 11, 2013: "I am immensely pleased to announce that OSIRIS-REx has passed its Mission and Flight System PDR and has been deemed ready to proceed to Phase C by the Standing Review Board."
 

 
             (http://osiris-rex.lpl.arizona.edu/sites/osiris-rex.lpl.arizona.edu/files/PDR_News%20PDR%20Clock.jpg) (http://osiris-rex.lpl.arizona.edu/sites/osiris-rex.lpl.arizona.edu/files/PDR_News%20PDR%20Clock.jpg)
             The PDR Countdown clock strikes "zero" and the team is ready.
 
 
Mission PDR is the technical crescendo of a series of in-depth meetings that began late last year with PDRs for each of the science instruments. Lasting 2 - 3 days, these meetings were highly detailed reviews of instrument designs presented to independent experts. Similar reviews followed for each of the spacecraft subsystems and for the ground system, which includes communications, flight dynamics, mission planning and commanding, and data processing. At mission PDR, these topics were reviewed at a higher level during a demanding week characterized by pointed questions from the Standing Review Board (SRB). The SRB is made up of experienced engineers and scientists, sel ected by NASA, who carefully dissect the details of the project to ensure that the team is charting a course that will result in a successful mission.
 

 
 (http://osiris-rex.lpl.arizona.edu/sites/osiris-rex.lpl.arizona.edu/files/PDR_News%20Team%20at%20PDR.jpg) (http://osiris-rex.lpl.arizona.edu/sites/osiris-rex.lpl.arizona.edu/files/PDR_News%20Team%20at%20PDR.jpg) The OSIRIS-REx Team working through the week-long PDR.
 
 
 
"It was a demanding and exciting week and the SRB did a great job digging in to understand the details of our mission design. At the end of the day they have given us a green rating with no liens on the review," announced Lauretta.
The SRB was particularly impressed by five aspects of the mission:
 

 
             (http://osiris-rex.lpl.arizona.edu/sites/osiris-rex.lpl.arizona.edu/files/PDR_News%20CDR%20Clock.jpg) (http://osiris-rex.lpl.arizona.edu/sites/osiris-rex.lpl.arizona.edu/files/PDR_News%20CDR%20Clock.jpg)
               The team knows they will be preparing for the next major milestone.
 
 
The SRB also pointed out areas that need work in the coming Phase C, but their comments were welcomed as ways to help us avoid problems and ensure success. Overall the review fr om the SRB is a source of pride for the entire OSIRIS-REx team. And now it's just 365 days until the next major mission milestone: the Critical Design Review. In the coming year, we will refine and more fully develop our designs, build prototype hardware, perform additional analysis, and begin to make highly detailed plans for operations around the asteroid.
The pace doesn't let up and we are ready!

 http://osiris-rex.lpl.arizona.edu/?q=The_OSIRIS-REx_Mission_is_Good_to_Go
Название: OSIRIS-REx
Отправлено: Salo от 03.04.2013 06:17:55
http://osiris-rex.lpl.arizona.edu/sites/osiris-rex.lpl.arizona.edu/files/pdfs/OSIRIS_REx_infosheet.pdf
(http://farm9.staticflickr.com/8519/8615592534_a91684608f_b.jpg)
Название: OSIRIS-REx
Отправлено: instml от 17.04.2013 18:33:02
НАСА считает самым опасным астероид 1999 RQ36

ФЛАГСТАФФ (США), 16 апр -- РИА Новости. Астероид 1999 RQ36, который в 2182 году сблизится с Землей, после "отмены" угрозы Апофиса и ряда других астероидов стал главным потенциально опасным объектом такого рода из известных ученым, сообщил руководитель программы околоземных объектов в НАСА Линдли Джонсон.
Выступая на международной конференции по защите от астероидно-кометной опасности в штате Аризона, Джонсон напомнил, что в последние годы специалистам НАСА удалось "отправить на пенсию" два астероида, которые, как считалось, могли угрожать Земле -- астероиды 2011 AG5 и 2004 MN4, более известный как Апофис.
"На данный момент наибольшая вероятность потенциальной угрозы связана с астероидом 1999 RQ36 и 2182 годом (когда тот сблизится с Землей)", -- сказал Джонсон.
Он отметил, что НАСА планирует отправить к астероиду 1999 RQ36 в 2018 году зонд OSIRIS-REx (http://ria.ru/science/20130208/921926255.html), который измерит силу так называемого эффекта Ярковского -- сдвига орбиты астероида в результате нагрева одной из его сторон Солнцем. Это позволит ученым точно оценить опасность этого и других астероидов для Земли.
Джонон пояснил РИА Новости, что в списке потенциально опасных объектов у этго астероида самая большая вероятность столкновения. По его словам, эта вероятность все равно очень маленькая.

http://ria.ru/science/20130416/932825271.html
Название: OSIRIS-REx
Отправлено: instml от 17.04.2013 18:33:24
К самому опасному астероиду предлагают отправить зонд с "ударником"

ФЛАГСТАФФ (США), 17 апр -- РИА Новости. Американские ученые предлагают НАСА отправить к астероиду 1999 RQ36 зонд, который "под присмотром" другого зонда, OSIRIS-REx, ударит по небесному телу 440-килограммовой "болванкой" -- проект миссии представил сотрудник Лаборатории реактивного движения (JPL) Стив Чесли на конференции по защите от астероидно-кометной опасности.
Астероид 1999 RQ36, который, по последним оценкам, является самым потенциально опасным для Земли (http://ria.ru/science/20130416/932825271.html) из известных объектов такого рода, станет целью новой миссии НАСА OSIRIS-REx (http://ria.ru/science/20130208/921926255.html). Зонд, запуск которого намечен на 2018 год, должен, в частности, попытаться взять пробу грунта и измерить силу так называемого эффекта Ярковского, сдвига орбиты астероида в результате нагрева одной из его сторон Солнцем.
Специалисты JPL предлагают воспользоваться тем, что OSIRIS-REx проведет рядом с 1999 RQ36 достаточно много времени, и отправить к астероиду еще один аппарат, ISIS. Этот зонд предполагается запустить вместе с марсианским зондом InSight в марте 2016 года так, что он доберется до астероида в феврале 2021 года, уже после окончания основной миссии OSIRIS-REx. ISIS в течение 90 дней своей работы отправит к астероиду 440-килограммовый ударник, после чего оба зонда проведут исследования образовавшегося кратера. Кроме того, ISIS, по сути, станет первым практическим экспериментом по искусственному изменению орбиты астероида.
"Такое удачное сочетание графика миссии OSIRIS-REx, предлагаемого плана ISIS и "свободного места" на запуске InSight в 2016 году -- это редкая возможность, которая, вероятно, выпадает раз в жизни, и я надеюсь, мы сможем ей воспользоваться", -- сказал Чесли.
Другой похожий проект НАСА, зонд "Дип Импакт", в 2005 году пролетел рядом с кометой Темпель-1 (http://ria.ru/science/20110127/326914252.html) (9P/Tempel 1) и отправил в ее ядро медный ударник весом 370 килограммов. Тогда сам "Дип Импакт" не смог заснять созданный им кратер из-за поднятой ударом пыли -- это спустя шесть лет сделал другой зонд, Stardust (http://ria.ru/science/20110215/334665174.html).

http://ria.ru/science/20130417/933030992.html
Название: OSIRIS-REx
Отправлено: instml от 04.05.2013 01:15:24
Самый опасный астероид получил имя в честь египетского бога-цапли

МОСКВА, 1 мая -- РИА Новости. Астероид 1999 RQ36, куда в 2016 году отправится зонд OSIRIS-REx для сбора образцов и доставки их на Землю, по итогам конкурса среди школьников получил новое имя -- Бену, в честь древнеегипетского божества-цапли, олицетворения души Озириса, сообщается на сайте проекта.
Астероид (101955) 1999 RQ36 размером 500 метров, открытый учеными из проекта LINEAR Массачусетского технологического института, в 2182 году сблизится с Землей. После "отмены" угрозы Апофиса и ряда других астероидов он стал главным потенциально опасным объектом  (http://ria.ru/science/20130416/932825271.html)для нашей планеты. Участники проекта OSIRIS-REx, чтобы получить для небесного тела "имя, которое будет легче произнести, чем 1999 RQ36", объявили конкурс на лучшее название, участниками которого могли стать школьники из любой страны мира младше 18 лет.

На конкурс поступило более 8 тысяч вариантов от школьников из 25 стран. В итоге Комитет по названиям малых тел Солнечной системы Международного астрономического союза принял вариант, предложенный девятилетним Майклом Пьюзио (Michael Puzio) из Северной Каролины. По словам победителя, образ цапли пришел ему в голову по ассоциации с механизмом по сбору образцов (Touch-and-Go Sample Mechanism) на борту "Озириса".
Теперь предложенное им название стало официальным для астероида 1999 RQ36. Бену -- египетское божество-цапля, оно появилось в самом начале творения мира из водного хаоса. Бену считался душой бога Солнца Ра, а впоследствии -- душой Озириса. Древние греки называли Бену фениксом.

http://ria.ru/science/20130501/935576052.html
Название: OSIRIS-REx
Отправлено: instml от 16.05.2013 19:59:00
The Confirmation Review is complete, Decision Memo is signed - we are confirmed for Phase C!

https://twitter.com/OSIRISREx/status/334734864953782273
Название: OSIRIS-REx
Отправлено: LL_ от 17.05.2013 00:16:12
440 кг кинетический ударник это где-то 10^11 Дж.
При той же массе можно и 10^15 Дж получить...
Название: OSIRIS-REx
Отправлено: che wi от 09.08.2013 11:48:59
В 2016 г. США отправят в космос аппарат для доставки на Землю фрагментов астероида
http://www.interfax.ru/world/news.asp?id=322649

ЦитатаМосква. 9 августа. INTERFAX.RU - Американское космическое агентство NASA выбрало ракету-носитель "Атлас-5" с российским ракетным двигателем первой ступени РД-180 для первой миссии, предусматривающей доставку на Землю образцов вещества астероида 101955 Bennu, сообщается на сайте NASA.

"Космический аппарат OSIRIS-Rex (Origins-Spectral Interpretation-Resours Identification-Security-Regolith Explorer) будет запущен в сентябре 2016 года с помощью ракеты-носителя "Атлас-5", - отмечается в сообщении NASA.

Ракетные двигатели РД-180 разработаны и производятся в подмосковном НПО "Энергомаш" (управляющая компания - Ракетно-космическая корпорация ''Энергия'') .

Планами НАСА предусматривается, что космический аппарат OSIRIS-Rex приблизится к астероиду в октябре 2018 года, проведет его дистанционное исследование, возьмет образцы его вещества, а затем доставит их на Землю в сентябре 2023г.

Стоимость миссии оценивается в $183,5 млн.
Название: OSIRIS-REx
Отправлено: instml от 12.12.2013 10:59:20
Countdown Begins for NASA's OSIRIS-REx Asteroid Mission
Dec. 10, 2013

NASA's OSIRIS-REx asteroid sample return mission began its countdown on December 9, at 7:43 PM EST, with 999 days remaining until the opening of the mission's launch window in September 2016.
"This is a pioneering effort, both technologically and scientifically," said Dante Lauretta, OSIRIS-Rex principal investigator fr om the University of Arizona, Tuscon. "Starting the countdown clock carries a lot of symbolism for us. After December 9, we will have a constant reminder of the time remaining to send OSIRIS-REx on his quest to return a sample of asteroid Bennu"
OSIRIS-REx is a University of Arizona-led mission that will visit a primitive, carbonaceous asteroid named Bennu in 2018, obtain a sample from its surface, and return it to the Earth in 2023.
"999 days seems a long time to get the spacecraft on the pad, but we know that time will pass quickly. There is a lot of work to do before our spacecraft begins its journey, and we have to be very disciplined to get everything done in time, " said Mike Donnelly, OSIRIS-REx project manager at NASA's Goddard Space Flight Center in Greenbelt, Md.
The world will be able to follow along on the university team website, and receive daily updates about the mission and asteroid science on Facebook. Twitter followers will get a special treat, as the spacecraft begins to report on its progress as it is comes together at the Lockheed Martin facility in Littleton, CO.
"Osiris was formed from pieces scattered across ancient Egypt, wh ere he awoke as the bringer of life and ruler of the underworld," said Lauretta. "Our spacecraft has a similar story -- it will be consist of components fabricated in locations around the world, that once together, will allow us to connect with a near-Earth object that is an accessible remnant from the formation of our solar system."
The OSIRIS-REx mission promises to help scientists address some basic questions about the composition of the very early solar system, the source of organic materials and water that made life possible on Earth, and to better predict the orbits of asteroids that represent collision threats to the Earth.
NASA's Goddard Space Flight Center in Greenbelt, Md., will provide overall mission management, systems engineering and safety and mission assurance for OSIRIS-REx. Dante Lauretta is the mission's principal investigator at the University of Arizona. Lockheed Martin Space Systems in Denver will build the spacecraft. OSIRIS-REx is the third mission in NASA's New Frontiers Program. NASA's Marshall Space Flight Center in Huntsville, Ala., manages New Frontiers for the agency's Science Mission Directorate in Washington.
For more information about the OSIRIS-REx project, visit: http://asteroidmission.org
Follow OSIRIS-REx on Facebook at https://www.facebook.com/OSIRISREx and on Twitter at @OSIRISREx .

http://www.nasa.gov/content/goddard/countdown-begins-for-nasa-s-osiris-rex-asteroid-mission/
Название: OSIRIS-REx
Отправлено: ZOOR от 16.01.2014 20:09:23
На АФ пишут
ЦитатаНачался сбор имён, которые отправятся на грунтовозе OSIRIS-REx к астероиду (101955) Бенну с последующим возвратом на Землю.
  http://www.planetary.org/blogs/bruce-betts/20140115-fly-your-name-to-an-asteroid.html
  Желающим внести имя - сюда:http://www.planetary.org/get-involved/messages/bennu/
Название: OSIRIS-REx
Отправлено: che wi от 11.04.2014 11:29:38
В США начали сооружение космического аппарата, который будет направлен к астероиду Бенну
http://itar-tass.com/nauka/1112618

ЦитатаВАШИНГТОН, 10 апреля. /Корр. ИТАР-ТАСС Иван Лебедев/. В США начинается сооружение космического аппарата, который в 2016 году будет направлен к астероиду, чтобы исследовать его, взять пробы грунта и через несколько лет доставить их на Землю. Как объявило в четверг Национальное управление США по аэронавтике и исследованию космического пространства (NASA), такое решение принято независимой комиссией, рассматривавшей возможность и целесообразность осуществления этого научного проекта.

Его главная цель будет заключаться в том, чтобы получить новые данные о строении и составе астероидов, представляющих потенциальную опасность для нашей планеты. Впоследствии эти сведения могут быть использованы при организации специальных миссий по предотвращению астероидной угрозы. Кроме того, ученые рассчитывают, что новая информация позволит им расширить представление о происхождении небесных тел и строении Вселенной.

Сооружением аппарата, который получил название "Осирис-Рекс", займется крупнейшая авиакосмическая компания "Локхид- Мартин". "Планируется, что он будет запущен осенью 2016 года, сблизится с астероидом Бенну в 2018-м и доставит пробы его грунта на Землю в 2023 году", - сообщило NASA. Оно надеется, что этот проект станет важным шагом на пути к организации полета пилотируемого корабля и высадке астронавтов на поверхность астероида, запланированным на 2025 год.

По расчетам американских специалистов, дистанционное изучение Бенну будет продолжаться более года, а масса грунта, который будет взят с его поверхности, составит не менее 60 граммов. Для этого аппарат будет оснащен пятью научными приборами и механизмами, в создании которых вместе с космическим ведомством США примет участие университет штата Аризона. "Нас ждет сложная работа по сооружению, интеграции и испытанию автоматической системы, для запуска которой у нас будет очень узкое временное окно", - отметил руководитель проекта "Осирис-Рекс" в Центре космических полетов имени Годдарда Майк Доннелли.

Бенну является небольшим астероидом (диаметр около 550 метров), который вращается по эллиптической орбите вокруг Солнца. Астрономы относят его к Аполлонам - астероидам, орбиты которых пересекают орбиту Земли. В этой группе он считается потенциально самым опасным для нашей планеты - вероятность столкновения с ним составляет 1 к 4000. Его падение на Землю будет эквивалентно взрыву мощностью 2700 мегатонн. Ожидается, что "Осирис-Рекс" уточнит положение Бенну и возможное отклонение его орбиты.
Название: OSIRIS-REx
Отправлено: che wi от 31.03.2015 16:33:39
ЦитатаJeff Foust @jeff_foust (https://twitter.com/jeff_foust) · 37m ago (https://twitter.com/jeff_foust/status/582888908209393664)

Green: OSIRIS-REx passed latest review yesterday, moved into Assembly, Test, and Launch Operations (ATLO) phase.
Название: OSIRIS-REx
Отправлено: che wi от 31.03.2015 17:25:23
NASA | Asteroid Bennu's Journey
http://youtu.be/gtUgarROs08

https://www.youtube.com/watch?v=gtUgarROs08 (https://www.youtube.com/watch?v=gtUgarROs08)
Название: OSIRIS-REx
Отправлено: che wi от 01.04.2015 07:53:19
OSIRIS-REx Begins ATLO (Assembly, Test, and Launch Operations)
http://dslauretta.com/2015/03/31/osiris-rex-begins-atlo-assembly-test-and-launch-operations/

(https://testforum.novosti-kosmonavtiki.ru/forum/file/53804)
Название: OSIRIS-REx
Отправлено: che wi от 22.06.2015 20:08:28
OSIRIS-REx Team Prepares for Next Step in NASA's Asteroid Sample Return Mission
http://www.nasa.gov/feature/goddard/osiris-rex-team-prepares-for-next-step-in-nasa-s-asteroid-sample-return-mission

ЦитатаWith launch only 15 months away, NASA's Origins Spectral Interpretation Resource Identification Security-Regolith Explorer (OSIRIS-REx) team is preparing to deliver instruments for integration with the spacecraft that will travel to, and collect a sample from, an asteroid.

"This is an exciting time for the project," said Mike Donnelly, OSIRIS-REx project manager from NASA's Goddard Space Flight Center in Greenbelt, Maryland.  "Years of effort are coming to culmination with the upcoming deliveries of the instruments to the spacecraft."

OSIRIS-REx will travel to a near-Earth asteroid called Bennu and bring a small sample back to Earth for study. The mission is scheduled for launch in September 2016. The spacecraft will reach its asteroid target in 2018 and return a sample to Earth in 2023.

The spacecraft will carry five instruments from national and international partners. These instruments will be key to mapping and analyzing Bennu's surface and will be critical in identifying a site from which a sample can be safely retrieved and ultimately returned to Earth.

The OSIRIS-REx Camera Suite (OCAMS) consists of three cameras that will image the asteroid Bennu during approach and proximity operations. The University of Arizona designed and built OCAMS.

The OSIRIS-REx Laser Altimeter (OLA) will scan Bennu to map the entire asteroid surface, producing local and global topographic maps. OLA is a contributed instrument from the Canadian Space Agency.

The OSIRIS-REx Thermal Emission Spectrometer (OTES) will conduct surveys to map mineral and chemical abundances and to take Bennu's temperature. OTES is provided by Arizona State University.

The OSIRIS-REx Visible and Infrared Spectrometer (OVIRS) measures visible and infrared light from Bennu, which can be used to identify water and organic materials. The instrument is provided by NASA's Goddard Space Flight Center.

A student experiment called the Regolith X-ray Imaging Spectrometer (REXIS) will map elemental abundances on the asteroid. REXIS is a collaboration between the students and faculty of the Massachusetts Institute of Technology and Harvard University.

"These instruments are essential to accomplishing the mission's science goals and unlocking the secrets of Bennu," said Dante Lauretta, principal investigator for OSIRIS-Rex at the University of Arizona, Tucson. "I am proud of the dedication to excellence that each of our instrument teams brings to this mission, and I look forward to all that we will discover at the asteroid."
Название: OSIRIS-REx
Отправлено: che wi от 29.06.2015 10:56:47
Зонд OSIRIS-REx получил первый научный инструмент
http://ria.ru/science/20150629/1100379774.html

ЦитатаМОСКВА, 29 июн - РИА Новости. Первый инструмент зонда OSIRIS-REx, который отправится к астероиду Бенну в 2016 году - спектрометр-"термометр" OTES был передан инженерами из университета Аризоны в руки компании "Локхид-Мартин", занимающейся сборкой аппарата, передает пресс-служба ВУЗа.

Неделю назад НАСА объявило о начале последнего этапа сборки зонда OSIRIS-REx и установке всех научных инструментов на борт космического корабля. Первопроходцем в этом деле станет инструмент OTES, главной задачей которого после прибытия к Бенну станет составление карты минералов и изучение химического состава астероида, а также измерение температуры его недр и поверхности.

Американский "астероидный проект" OSIRIS-REx (Origins-Spectral Interpretation-Resource Identification-Security-Regolith Explorer) для США будет первой программой исследования астероида с помощью автоматического зонда. "Осирис" будет запущен в 2016 году и приблизится к астероиду Бенну (1999 RQ36) в 2020 году.

Зонд в течение шести месяцев будет составлять карту его поверхности, после чего ученые смогут выбрать место, откуда будет взят образец вещества массой около 60 граммов. Затем он будет помещен в капсулу, которая, как ожидается, совершит посадку на полигоне в штате Юта в 2023 году.

После этого аппарат, созданный на базе марсианского зонда MRO, возможно, сможет выполнять другие задачи.
Название: OSIRIS-REx
Отправлено: instml от 15.10.2015 20:20:49
OSIRIS-REx Spacecraft Assembly Nearly Complete

http://www.planetary.org/blogs/guest-blogs/dante-lauretta/osiris-rex-spacecraft-assembly-nearly-complete.html
Название: OSIRIS-REx
Отправлено: che wi от 21.10.2015 21:30:57
NASA's OSIRIS-REx Spacecraft Begins Environmental Testing
https://www.nasa.gov/press-release/goddard/nasa-s-osiris-rex-spacecraft-begins-environmental-testing

ЦитатаNASA's Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) mission is undergoing environmental testing at Lockheed Martin Space Systems facilities, near Denver, Colorado. OSIRIS-REx will be the first U.S. mission to return samples fr om an asteroid to Earth for further study.

"OSIRIS-REx is entering environmental testing on schedule, on budget and with schedule reserves," said Mike Donnelly, OSIRIS-REx project manager at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "This allows us to have flexibility if any concerns arise during final launch preparations."

Over the next five months, the spacecraft will be subjected to a range of rigorous tests that simulate the vacuum, vibration and extreme temperatures it will experience throughout the life of its mission.

"This is an exciting time for the program as we now have a completed spacecraft and the team gets to test drive it, in a sense, before we actually fly it to asteroid Bennu," said Rich Kuhns, OSIRIS-REx program manager at Lockheed Martin Space Systems. "The environmental test phase is an important time in the mission as it will reveal any issues with the spacecraft and instruments, while here on Earth, before we send it into deep space."

Specifically, the OSIRIS-REx spacecraft will undergo tests to simulate the harsh environment of space, including acoustical, separation and deployment shock, vibration, and electromagnetic interference. The simulation concludes with a test in which the spacecraft and its instruments are placed in a vacuum chamber and cycled through the extreme hot and cold temperatures it will face during its journey to Bennu.

"This milestone marks the end of the design and assembly stage," said Dante Lauretta, principal investigator for OSIRIS-REx at the University of Arizona, Tucson. "We now move on to test the entire flight system over the range of environmental conditions that will be experienced on the journey to Bennu and back. This phase is critical to mission success, and I am confident that we have built the right system for the job."

OSIRIS-REx is scheduled to ship from Lockheed Martin's facility to NASA's Kennedy Space Center next May, wh ere it will undergo final preparations for launch.

After launch in September 2016, the spacecraft will travel to the near-Earth asteroid Bennu and bring at least a 60-gram (2.1-ounce) sample back to Earth for study. OSIRIS-REx will return the largest sample from space since the Soviet Union's Luna 24 mission returned 170 grams (6 ounces) of lunar soil in 1976.

Scientists expect that the Bennu may hold clues to the origin of the solar system and the source of water and organic molecules that may have made their way to Earth. OSIRIS-REx's investigation will inform future efforts to develop a mission to mitigate an impact, should one be required.
(https://testforum.novosti-kosmonavtiki.ru/forum/file/58372)
Название: OSIRIS-REx
Отправлено: instml от 19.12.2015 11:15:58
OSIRIS-REx Completes Mechanical Environmental Testing

http://www.planetary.org/blogs/guest-blogs/dante-lauretta/20151218-osiris-rex-completes-mechanical-testing.html
Название: OSIRIS-REx
Отправлено: che wi от 19.12.2015 13:54:32
International Instrument Delivered for NASA's 2016 Asteroid Sample Return Mission
http://osiris-rex.lpl.arizona.edu/?latest-news=international-instrument-delivered-nasas-2016-asteroid-sample-return-mission

ЦитатаDecember 17, 2015 - A sophisticated laser-based mapping instrument has arrived at Lockheed Martin Space Systems in Denver for integration onto NASA's Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft.

The OSIRIS-REx Laser Altimeter (OLA), contributed by the Canadian Space Agency (CSA), will create 3-D maps of asteroid Bennu to help the mission team sel ect a sample collection site.

"The OSIRIS-REx Project has worked very closely with our partner CSA and their contractor MDA to get this critical instrument delivered to the spacecraft contractor's facility," said Mike Donnelly, OSIRIS-REx project manager fr om NASA's Goddard Space Flight Center in Greenbelt, Maryland. "We are very pleased with the performance of the instrument and look forward to its contribution to our mission."

OLA is an advanced LIDAR (Light Detecting and Ranging) system that will scan the entire surface of the asteroid to create a highly accurate, 3-D shape model of Bennu. This will provide mission scientists with fundamental data on the asteroid's shape, topography (distribution of boulders, rocks and other surface features), surface processes and evolution. An accurate shape model will also be an important tool for navigators as they maneuver the OSIRIS-REx spacecraft around the 500-meter-wide (0.3-mile-wide) asteroid. In exchange for providing the OLA instrument, CSA will receive a portion of the returned asteroid sample for study by Canadian scientists.

"OLA will measure the shape and topography of Bennu to a much higher fidelity and with much greater efficiency than any planetary science mission has achieved," said Michael Daly, OLA instrument lead at York University, Toronto. "This information is essential to understanding the evolution and current state of the asteroid. It also provides invaluable information in aid of retrieving a sample of Bennu for return to Earth."

After launch in September 2016, the OSIRIS-REx spacecraft will travel to the near-Earth asteroid Bennu and bring at least a 60-gram (2.1-ounce) sample back to Earth for study. Scientists expect that Bennu may hold clues to the origin of the solar system and the source of water and organic molecules that may have made their way to Earth. OSIRIS-REx's investigation will also inform future efforts to develop a mission to mitigate an asteroid impact on Earth, should one be required.

"The data received from OLA will be key to determining a safe sample site on Bennu," said Dante Lauretta, principal investigator for OSIRIS-REx at the University of Arizona, Tucson. "This instrument is a valuable addition to the spacecraft, and I appreciate our Canadian partners' hard work and contribution to the OSIRIS-REx mission."

The laser altimeter was built for CSA by MacDonald, Dettwiler and Associates Ltd. (MDA) and its partner, Optech. OSIRIS-REx is scheduled to ship fr om Lockheed Martin's facility to NASA's Kennedy Space Center, Florida in May 2016, wh ere it will undergo final preparations for launch.
(https://testforum.novosti-kosmonavtiki.ru/forum/file/59947)
Название: OSIRIS-REx
Отправлено: che wi от 27.01.2016 21:27:23
How REXIS Made It on the Spacecraft (http://dslauretta.com/2016/01/20/how-rexis-made-it-on-the-spacecraft/)

ЦитатаOSIRIS-REx has achieved many major milestones over the past month. Of the more significant accomplishments is the installation of the Regolith X-ray Imaging Spectrometer (REXIS) on the spacecraft. The instrument team has successfully installed the REXIS Spectrometer and Solar X-ray Monitor on the spacecraft.  The Initial Power-on and functional tests were successfully completed on December 19. However, there is more to the story of how REXIS made it on to the spacecraft.

REXIS was originally scheduled for installation in September 2015. However, after careful consideration, the project decided that we could not approve moving forward with an ATLO Integration Readiness Review (AIRR) for the REXIS instrument at that time.  We came to this conclusion based upon the number of items that remained open on the instrument. REXIS has always been primarily viewed as an educational opportunity to train the next generation of scientists and engineers in the development of spaceflight hardware. So science return from the instrument is a second priority to ensuring that REXIS does not damage the spacecraft or other science instruments. To this end, the project focused on the "do-no-harm" verification items that needed to be successfully closed before we could be assured that the REXIS instrument was safe to integrate to the spacecraft. In addition, there was an unexplained shift in a primary vibration mode that was revealed during instrument-level vibration testing.  That unexplained shift had our mechanical engineers concerned about the safety of the instrument.

At the same time, Rick Binzel, the REXIS Instrument Scientist at MIT, expressed concern about the instrument's expected science performance. Even though REXIS is a student experiment, there is still an expectation that it will contribute scientific knowledge about Bennu and enhance the OSIRIS-REx mission's science return. Rick pointed out several problems with the instrument and included suggested solutions. Output noise from the main spectrometer CCDs was limiting the energy resolution. In addition, the Solar X-ray Monitor (SXM) performance was limited by an unpowered trigger circuit within the main spectrometer electronics. Since REXIS installation was already delayed until after spacecraft mechanical testing, we decided to use this time to put our full effort into restoring its science performance.

The team quickly assessed the current state of the instrument and identified several repairs. The output noise performance could by improved by adding some noise limiting capacitors to the spectrometer electronics. Spectrometer spectral energy resolution degradation was traced to the improper grounding of power supply cases on the main electronics box. This problem was solved by the addition of capacitors to the electronics. The failure of the SXM to trigger on X-ray events meant that the instrument could not distinguish real X-ray events from noise. This failure was the result of an error in the electronics layout; there was no power being provided to the trigger amplifier. This problem was solved by the addition of two jumper wires on the main electronics box and the addition of capacitors to the SXM circuitry.

To implement these repairs, REXIS was shipped from Denver back to the MIT Lincoln Laboratory. There, the electronics box was opened and the SXM was disassembled. The board repairs were completed and REXIS's performance was restored to full functionality. With these repairs in place, REXIS can now enhance the science return of the OSIRIS-REx mission. Rick Binzel contacted me to give his full recommendation for REXIS's inclusion in the OSIRIS-REx payload. In addition, REXIS demonstrated that it met all the "do-no-harm" requirements post repair. REXIS was now ready for spacecraft installation.
(https://testforum.novosti-kosmonavtiki.ru/forum/file/60642) (https://testforum.novosti-kosmonavtiki.ru/forum/file/60643)
Название: OSIRIS-REx
Отправлено: che wi от 30.04.2016 09:29:25
NASA's OSIRIS-REx Asteroid Sample Return Mission (https://www.youtube.com/watch?v=T0FxDxs7lyw)

https://www.youtube.com/watch?v=T0FxDxs7lyw (https://www.youtube.com/watch?v=T0FxDxs7lyw)

ЦитатаThe OSIRIS-REx mission, launching in September 2016, plans to return a sample of asteroid Bennu to Earth in 2023 so that scientists can study pristine material left over from the early solar system. Dante Lauretta, Principal Investigator for OSIRIS-REx, provides an overview of this asteroid sample return mission.
Название: OSIRIS-REx
Отправлено: Salo от 03.05.2016 15:18:17
http://spaceflightnow.com/2016/05/03/new-lineup-plan-spelled-out-for-upcoming-atlas-5-rocket-launches/
ЦитатаAugust will be spent stacking an Atlas 5 rocket with a single solid booster, the 411 configuration, and rolling the vehicle to the pad for a rare countdown dress rehearsal to ensure systems are operating correctly ahead of the time-sensitive launch of NASA's OSIRIS-REx probe to asteroid Bennu.
 (http://spaceflightnow.com/wp-content/uploads/2016/05/ChNjeO6WgAEBHV4.jpg-large.jpeg) (http://spaceflightnow.com/wp-content/uploads/2016/05/ChNjeO6WgAEBHV4.jpg-large.jpeg)
An artist's concept of OSIRIS-REx. Credit: Lockheed Martin

The craft will be dispatched on a two-year journey to reach the near-Earth object for a detailed survey and sample collection using a robotic arm to reach out and touch the asteroid.
OSIRIS-REx then fires its engines to return home with the pristine sample stowed in a decent capsule that will make a parachute-assisted landing in remote Utah in 2023.
Launch is scheduled for Sept. 8 at 7:05 p.m. EDT. The day's 120-minute launch window will have liftoff opportunities every five minutes based on the evolving trajectory.
OSIRIS-REx must be launched by Oct. 12 or else face a year-long delay due to planetary alignment, making the schedule, vehicle stacking and countdown rehearsal critical.
Built in Denver by Lockheed Martin, the spacecraft is scheduled to arrive at the Kennedy Space Center's Shuttle Landing Facility on May 20 and be taken to the Payload Hazardous Servicing Facility for final preparations.
Название: OSIRIS-REx
Отправлено: Salo от 03.05.2016 15:24:12
Цитата (https://pbs.twimg.com/profile_images/455565819963899904/TGNI_n4n_bigger.jpeg) SimpleFly Tech ‏@simpleflytech  (https://twitter.com/simpleflytech)
@ulalaunch (https://twitter.com/ulalaunch) giving you the EXPANDED view of the #atlasV (https://twitter.com/hashtag/atlasV?src=hash) boosting @OSIRISREx (https://twitter.com/OSIRISREx) on its journey to asteroid Bennu
 (https://pbs.twimg.com/media/ChOjmsyWUAAjJ-s.jpg)
Название: OSIRIS-REx
Отправлено: Salo от 03.05.2016 15:25:14
Цитата (https://pbs.twimg.com/profile_images/666431395313680385/cIZLDamG_bigger.jpg) Denver7 News Подлинная учетная запись ‏@DenverChannel  (https://twitter.com/DenverChannel)  
Model of Atlas V 411 that will lauch @OSIRISREx (https://twitter.com/OSIRISREx) into space! #NASASocial (https://twitter.com/hashtag/NASASocial?src=hash) @ulalaunch (https://twitter.com/ulalaunch) @LockheedMartin (https://twitter.com/LockheedMartin)
 (https://pbs.twimg.com/media/ChOuvnqUkAA54Qc.jpg)
Название: OSIRIS-REx
Отправлено: che wi от 03.05.2016 21:42:32
(https://testforum.novosti-kosmonavtiki.ru/forum/file/62785)
Название: OSIRIS-REx
Отправлено: Salo от 20.05.2016 23:04:31
Цитата (https://pbs.twimg.com/profile_images/513027336594132993/N9NSzi6o_bigger.jpeg) Brian Berger ‏@Berger_SN  (https://twitter.com/Berger_SN)  
Surely there are better ways to fly from Denver to Florida, @jeff_foust (https://twitter.com/jeff_foust) #osirisrex (https://twitter.com/hashtag/osirisrex?src=hash)
 (https://pbs.twimg.com/media/Ci7fpFXWsAQsQh9.jpg)

(https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 55 мин.55 минут назад (https://twitter.com/jeff_foust/status/733735069211222017)  Denver, CO  (https://twitter.com/search?q=place%3Ab49b3053b5c25bf5)
Hope my seat mate on this flight isn't too rambunctious. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 (https://pbs.twimg.com/media/Ci7AKF2U4AAAH9j.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 1 ч.1 час назад (https://twitter.com/jeff_foust/status/733728606648553473)  Denver, CO  (https://twitter.com/search?q=place%3Ab49b3053b5c25bf5)
OSIRIS-REx is in the C-17 now.
 (https://pbs.twimg.com/media/Ci66R7LUkAAlzPy.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 2 ч.2 часа назад (https://twitter.com/jeff_foust/status/733721656791728128)  Denver, CO  (https://twitter.com/search?q=place%3Ab49b3053b5c25bf5)
. @DSLauretta (https://twitter.com/DSLauretta) watches as #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash) is loaded into the aircraft.
 (https://pbs.twimg.com/media/Ci6z9Y-UUAAwiUy.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 2 ч.2 часа назад (https://twitter.com/jeff_foust/status/733720770589949952)  Denver, CO  (https://twitter.com/search?q=place%3Ab49b3053b5c25bf5)
Loading of #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash) into the C-17.
 (https://pbs.twimg.com/media/Ci6zJzuW0AA4IBu.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 2 ч.2 часа назад (https://twitter.com/jeff_foust/status/733718789473193985)
Loading #osirisrex (https://twitter.com/hashtag/osirisrex?src=hash) onto the C-17.
 (https://pbs.twimg.com/media/Ci6xWeyUgAAAcDc.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 2 ч.2 часа назад (https://twitter.com/jeff_foust/status/733714878964207616)  Denver, CO  (https://twitter.com/search?q=place%3Ab49b3053b5c25bf5)
We have liftoff: OSIRIS-REx has cleared the truck. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 (https://pbs.twimg.com/media/Ci6ty3MVAAAZ3Ca.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 3 ч.3 часа назад (https://twitter.com/jeff_foust/status/733696601793908736)  Denver, CO  (https://twitter.com/search?q=place%3Ab49b3053b5c25bf5)
OSIRIS-REx has arrived at Buckley, and they're starting work to load it onto the C-17. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 (https://pbs.twimg.com/media/Ci6dK_4WkAAoTka.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 4 ч.4 часа назад (https://twitter.com/jeff_foust/status/733688000719298560)  Denver, CO  (https://twitter.com/search?q=place%3Ab49b3053b5c25bf5)
Today's ride: a C-17. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 (https://pbs.twimg.com/media/Ci6VWVEWgAAiR3w.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 5 ч.5 часов назад (https://twitter.com/jeff_foust/status/733673319958880256)  Denver CO  (https://twitter.com/search?q=place%3A7c46947784451941)
 Briefing before the convoy departs LM for Buckley AFB. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 (https://pbs.twimg.com/media/Ci6H_0IUYAEwAGS.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 6 ч.6 часов назад (https://twitter.com/jeff_foust/status/733665680319467522)  Denver CO  (https://twitter.com/search?q=place%3A7c46947784451941)
The full House Appropriations Cmte will mark up its CJS spending bill (including NASA and NOAA) on Tuesday: http://appropriations.house.gov/uploadedfiles/hmkp-114-ap00-20160524-sd001.pdf ... (https://t.co/ZA2P0G3Hq3)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 6 ч.6 часов назад (https://twitter.com/jeff_foust/status/733662820827422720)  Denver CO  (https://twitter.com/search?q=place%3A7c46947784451941)
Every mission needs a mascot, including @OSIRISREx (https://twitter.com/OSIRISREx).
 (https://pbs.twimg.com/media/Ci5-crtVAAASku6.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 6 ч.6 часов назад (https://twitter.com/jeff_foust/status/733652342688632834)  Denver CO  (https://twitter.com/search?q=place%3A7c46947784451941)
There's @OSIRISREx (https://twitter.com/OSIRISREx), loaded and ready to roll from Lockheed Martin this morning.
 (https://pbs.twimg.com/media/Ci506xhXIAIehcJ.jpg)
Название: OSIRIS-REx
Отправлено: Salo от 21.05.2016 12:05:04
http://spaceflightnow.com/2016/05/20/nasa-probe-that-will-make-round-trip-to-asteroid-and-back-sent-to-launch-base/
ЦитатаNASA probe that will make round trip to asteroid and back sent to launch base             
 May 20, 2016 (http://spaceflightnow.com/2016/05/) Justin Ray (http://spaceflightnow.com/author/justin-sfn-ray/)
(http://spaceflightnow.com/wp-content/uploads/2016/05/orex_ship.png)[/url]
Credit: OSIRIS-REx project

CAPE CANAVERAL -- Equipped with a robot arm, sample collector and return capsule, NASA's asteroid-bound OSIRIS-REx probe emerged from its pristine factory and flew to the launch site in Florida this evening.
A United Launch Alliance Atlas 5 rocket will hurl the 4,650-pound spacecraft toward Asteroid Bennu on Sept. 8 for a 7-year, round trip voyage to return a specimen of the celestial object to scientists on Earth.
"It's a great adventure to explore an unknown world. We are going to reach out and touch it, and we are going to bring treasure back to Earth," said Dante Lauretta, the OSIRIS-REx principal investigator.
It is a daring mission to be sure, with the tiny solar-powered satellite executing a "touch-and-go" maneuver at 0.22 mph in 2019 to obtain the sample from the relic of the solar system's creation.
OSIRIS-REx's arm will contact the surface of Bennu for only five seconds, firing a puff of nitrogen gas to stur up the regolith into the collection chamber. The mission hopes to obtain between 2.1 ounces and 4.4 pounds of Bennu, the most extraterrestrial material returned to Earth since Apollo.
After the valuable cargo is stowed, the craft will fly back to Earth and fire a descent capsule to a parachute-assisted landing in September 2023 in Utah.
"The asteroids record the earliest stages of the solar system, so it really is time capsule from the very dawn in the history of our solar system," Lauretta said.
"My dream is that we find something that is unique, that is not represented in our meteorite collection, that is really organically-rich material on the surface of this asteroid that holds all kinds of scientific treasures about the origin of life and organic molecular evolution in the solar system."
The launch campaign began today as OSIRIS-REx was flown from Lockheed Martin production facilities in Denver, via Buckley Air Force Base, to the Shuttle Landing Facility at the Kennedy Space Center. The Air Force C-17 transport aircraft touched down just before 7:30 p.m.
It will be taken to the Payload Hazardous Serving Facility to undergo final testing and the loading of 2,600 pounds of maneuvering fuel.
Two other Atlas launches are scheduled between now and OSIRIS-REx, deploying a Navy communications spacecraft on June 24 and a classified spy satellite at the end of July.
Then stacking of the 411-configured Atlas 5 will occur in August at Cape Canaveral for America's first asteroid sample-return mission. The two-stage rocket will feature a lone side-mounted solid booster for added takeoff thrust, a unique variant that has flown successfully three times before.
 (http://spaceflightnow.com/wp-content/uploads/2016/05/ASTRA_2.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/05/ASTRA_2.jpg)
The first Atlas 5-411 launched the European ASTRA 1KR television broadcast satellite in 2006. Credit: Ben Cooper/Spaceflight Now

ULA and NASA managers plan to move the rocket to the launch pad temporarily in late August for a full countdown dress rehearsal and fueling exercise to uncover any technical issues.
That's because OSIRIS-REx has a limited launch window, through Oct. 12, for planetary alignment reasons. If it misses this opportunity, the flight would be delayed a year.
Liftoff on Sept. 8 is scheduled for 7:05 p.m. EDT (2305 GMT). The day's 120-minute launch window will have liftoff chances every five minutes based on the evolving trajectory.
The OSIRIS-REx name stands for the Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer. It is the third mission in NASA's New Frontiers program to explore the solar system, following New Horizons to Pluto and Juno currently en route to Jupiter.
Название: OSIRIS-REx
Отправлено: Salo от 21.05.2016 13:24:20
Цитата (https://pbs.twimg.com/profile_images/704436578328817664/oQT8jw72_bigger.jpg) OSIRIS-REx ‏@OSIRISREx  (https://twitter.com/OSIRISREx) 9 ч.9 часов назад (https://twitter.com/OSIRISREx/status/733829519837134848)
My chariot to the Payload Hazardous Servicing Facility. Good night all! See you tomorrow. (https://abs.twimg.com/emoji/v2/72x72/1f31d.png)#ShipToCape (https://twitter.com/hashtag/ShipToCape?src=hash)
 (https://pbs.twimg.com/media/Ci8WD2NWgAAFVR3.jpg)
 
  (https://pbs.twimg.com/profile_images/704436578328817664/oQT8jw72_bigger.jpg) OSIRIS-REx ‏@OSIRISREx  (https://twitter.com/OSIRISREx) 9 ч.9 часов назад (https://twitter.com/OSIRISREx/status/733824936184315904)
My other vehicle is a forklift. #ShipToCape (https://twitter.com/hashtag/ShipToCape?src=hash) #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 
  (https://pbs.twimg.com/profile_images/704436578328817664/oQT8jw72_bigger.jpg) OSIRIS-REx ‏@OSIRISREx  (https://twitter.com/OSIRISREx) 9 ч.9 часов назад (https://twitter.com/OSIRISREx/status/733823838744662016)
On solid ground in at @NASAKennedy (https://twitter.com/NASAKennedy) in #CapeCanaveral (https://twitter.com/hashtag/CapeCanaveral?src=hash)! #ShipToCape (https://twitter.com/hashtag/ShipToCape?src=hash)
 (https://pbs.twimg.com/media/Ci8Q4i2WkAEKG1m.jpg)
 (https://pbs.twimg.com/media/Ci8Q4i4WUAErN60.jpg)
 
 OSIRIS-REx ретвитнул(а) (https://twitter.com/OSIRISREx)
  (https://pbs.twimg.com/profile_images/639109886538727424/iqeT58Yk_bigger.jpg) Dante Lauretta ‏@DSLauretta  (https://twitter.com/DSLauretta) 10 ч.10 часов назад (https://twitter.com/DSLauretta/status/733817676728930304)
.@OSIRISREx (https://twitter.com/OSIRISREx) is disembarking from the C-17 and headed to the Payload Handling Facility. #ShipToCape (https://twitter.com/hashtag/ShipToCape?src=hash)
 (https://pbs.twimg.com/media/Ci8LSfEUkAAFaoQ.jpg)
 
  (https://pbs.twimg.com/profile_images/704436578328817664/oQT8jw72_bigger.jpg) OSIRIS-REx ‏@OSIRISREx  (https://twitter.com/OSIRISREx) 10 ч.10 часов назад (https://twitter.com/OSIRISREx/status/733815840383115264)
"Next stop: #Bennu (https://twitter.com/hashtag/Bennu?src=hash)!" #ShipToCape (https://twitter.com/hashtag/ShipToCape?src=hash)
 
  (https://pbs.twimg.com/profile_images/704436578328817664/oQT8jw72_bigger.jpg) OSIRIS-REx ‏@OSIRISREx  (https://twitter.com/OSIRISREx) 10 ч.10 часов назад (https://twitter.com/OSIRISREx/status/733813855155949573)
Why, hello there! I'm almost ready to disembark at @NASAKennedy (https://twitter.com/NASAKennedy)! (https://abs.twimg.com/emoji/v2/72x72/1f44b-1f3fd.png)
 (https://pbs.twimg.com/media/Ci8HzAUUkAAdGNl.jpg)
 (https://pbs.twimg.com/media/Ci8HzLzUUAIleqf.jpg)
 
  (https://pbs.twimg.com/profile_images/704436578328817664/oQT8jw72_bigger.jpg) OSIRIS-REx ‏@OSIRISREx  (https://twitter.com/OSIRISREx) 10 ч.10 часов назад (https://twitter.com/OSIRISREx/status/733813224131465216)
My whole team is thrilled to be in #CapeCanaveral (https://twitter.com/hashtag/CapeCanaveral?src=hash). @DSLauretta (https://twitter.com/DSLauretta)
 
  (https://pbs.twimg.com/profile_images/704436578328817664/oQT8jw72_bigger.jpg) OSIRIS-REx ‏@OSIRISREx  (https://twitter.com/OSIRISREx) 11 ч.11 часов назад (https://twitter.com/OSIRISREx/status/733806404645986307)
My PI @DSLauretta (https://twitter.com/DSLauretta) and our Project planning & control officer, Heather Enos, on the runway. #ShipToCape (https://twitter.com/hashtag/ShipToCape?src=hash) #osirisrex (https://twitter.com/hashtag/osirisrex?src=hash)
 (https://pbs.twimg.com/media/Ci8BCXNUoAEsUS7.jpg)
 
  (https://pbs.twimg.com/profile_images/704436578328817664/oQT8jw72_bigger.jpg) OSIRIS-REx ‏@OSIRISREx  (https://twitter.com/OSIRISREx) 11 ч.11 часов назад (https://twitter.com/OSIRISREx/status/733802423945469952)
After a 7:20 pm touchdown, my team is starting to disembark at @NASAKennedy (https://twitter.com/NASAKennedy). Hello Florida! #ShipToCape (https://twitter.com/hashtag/ShipToCape?src=hash)
 (https://pbs.twimg.com/media/Ci79ap4WYAEpJO3.jpg)
 
  (https://pbs.twimg.com/profile_images/704436578328817664/oQT8jw72_bigger.jpg) OSIRIS-REx ‏@OSIRISREx  (https://twitter.com/OSIRISREx) 11 ч.11 часов назад (https://twitter.com/OSIRISREx/status/733801363587665926)
We've touched down at @NASAKennedy (https://twitter.com/NASAKennedy)! #ShipToCape (https://twitter.com/hashtag/ShipToCape?src=hash)
 (https://pbs.twimg.com/media/Ci78c74W0AEgxLX.jpg)
Название: OSIRIS-REx
Отправлено: Salo от 21.05.2016 13:25:59
Цитата (https://pbs.twimg.com/profile_images/2388248737/ph3vpi97c9zopqvikrmd_bigger.png) Lockheed Martin Подлинная учетная запись ‏@LockheedMartin  (https://twitter.com/LockheedMartin)  
What a day! @OSIRISREx (https://twitter.com/OSIRISREx) is safe @NASAKennedy (https://twitter.com/NASAKennedy) where it will get ready to launch on the @ULALaunch (https://twitter.com/ulalaunch) #AtlasV (https://twitter.com/hashtag/AtlasV?src=hash)!
 (https://pbs.twimg.com/media/Ci8lJ49UgAAyTGL.jpg)  
 (https://pbs.twimg.com/media/Ci8lJ-QUkAAISLq.jpg)  
 (https://pbs.twimg.com/media/Ci8lKD7UkAAnZpy.jpg)
 (https://pbs.twimg.com/media/Ci8lKIpVEAAg9yN.jpg)
  19:25 - 20 мая 2016 г.  
Название: OSIRIS-REx
Отправлено: Salo от 21.05.2016 13:46:08
https://blogs.nasa.gov/kennedy/2016/05/20/791/
ЦитатаOSIRIS-REx Spacecraft to Arrive Today
Posted on May 20, 2016 at 2:42 pm (https://blogs.nasa.gov/kennedy/2016/05/20/791/) by Steven Siceloff (https://blogs.nasa.gov/kennedy/author/ssicelof/).
(http://blogs.nasa.gov/kennedy/wp-content/uploads/sites/246/2016/05/Osiris-Spacecraft-Assembled-1024x683.jpeg) (http://blogs.nasa.gov/kennedy/2016/05/20/791/osiris-spacecraft-assembled/)(http://blogs.nasa.gov/kennedy/wp-content/uploads/sites/246/2016/05/16-019.jpg-300x169.png) (http://blogs.nasa.gov/kennedy/2016/05/20/791/16-019-jpg/)
The spacecraft that will perform NASA's Origins Spectral Interpretation Resource Identification Security - Regolith Explorer mission, known as OSIRIS-REx, will arrive at Kennedy Space Center fr om Buckley Air Force Base near Denver on May 20 aboard an Air Force C-17 at the Shuttle Landing Facility.
OSIRIS-REx will come out of the shipping container May 21, go onto a rotation fixture on May 23, have a spin test May 24-25. It then will be hoisted onto a dolly May 26 for other upcoming activities. A partial solar array deployment test is scheduled on May 31.
OSIRIS-Rex is scheduled to launch Sept. 8 at 7:05 p.m. EDT. As planned, the spacecraft will reach its near-Earth asteroid target, called Bennu (formerly 1999 RQ36), in 2018. Once within three miles of the asteroid, the spacecraft will begin six months of comprehensive surface mapping.
The science team then will pick a location wh ere the spacecraft's arm will take a sample. The spacecraft gradually will move closer to the site, and the arm will extend to collect a 2.1-ounce sample for return to Earth in 2023. The mission will help scientists investigate how planets formed and how life began, as well as improve our understanding of asteroids that could impact Earth.
Bennu is about 1,900 feet in diameter or roughly the size of six football fields. The asteroid, a little altered over time, is likely to represent a snapshot of our solar system's infancy.
NASA's Goddard Space Flight Center provides overall mission management, systems engineering, and safety and mission assurance for OSIRIS-REx. Dante Lauretta is the principal investigator at the University of Arizona's Lunar and Planetary Laboratory. Lockheed Martin Space Systems in Denver built the spacecraft. OSIRIS-REx is the third mission in NASA's New Frontiers Program. NASA's Marshall Space Flight Center in Huntsville, Alabama, manages New Frontiers for the agency's Science Mission Directorate in Washington, D.C.
Название: OSIRIS-REx
Отправлено: azeast от 21.05.2016 16:25:11
Тут   http://ria.ru/science/20160521/1437270304.html
на русский перевели: 

"США планируют осуществить запуск космического аппарата OSIRIS-REx, предназначенного для возвращения на Землю пробы грунта с астероида Бенну (ранее называли 1999 RQ36), 8 сентября, сообщило НАСА.
"Старт OSIRIS-REx при помощи ракеты-носителя Atlas V корпорации United Launch Alliance с космодрома на мысе Канаверал состоится 8 сентября", -- говорится в сообщении ведомства. Двухчасовое "окно" запуска "открывается" в 19.05 по времени Восточного побережья США (2.05 мск 9 сентября).
Согласно планам НАСА, аппарат достигнет астероида Бенну в 2018 году. Аппарату предстоит осуществить забор по меньшей мере 60 граммов веществ с поверхности астероида, которые он вернет на Землю. Как ожидается, это произойдет в 2023 году."
Название: OSIRIS-REx
Отправлено: Salo от 21.05.2016 22:33:12
Цитата (https://pbs.twimg.com/profile_images/704436578328817664/oQT8jw72_bigger.jpg) OSIRIS-REx ‏@OSIRISREx  (https://twitter.com/OSIRISREx)  3 ч.3 часа назад (https://twitter.com/OSIRISREx/status/734058356382572544)  
I am one good looking spacecraft. #ItsNotBraggingIfItsTrue (https://twitter.com/hashtag/ItsNotBraggingIfItsTrue?src=hash)
 (https://pbs.twimg.com/media/Ci_mEeMWgAAcVLE.jpg)  
 
  (https://pbs.twimg.com/profile_images/704436578328817664/oQT8jw72_bigger.jpg) OSIRIS-REx ‏@OSIRISREx  (https://twitter.com/OSIRISREx)  4 ч.4 часа назад (https://twitter.com/OSIRISREx/status/734048286005428226)  
Almost ready for my close-up. #ShipToCape (https://twitter.com/hashtag/ShipToCape?src=hash)
  (https://pbs.twimg.com/media/Ci_c5upXAAAn5FJ.jpg)
 
  (https://pbs.twimg.com/profile_images/704436578328817664/oQT8jw72_bigger.jpg) OSIRIS-REx ‏@OSIRISREx  (https://twitter.com/OSIRISREx)  4 ч.4 часа назад (https://twitter.com/OSIRISREx/status/734044563510284288)  
Whew! It was warm in there. #ShipToCape (https://twitter.com/hashtag/ShipToCape?src=hash)
 (https://pbs.twimg.com/media/Ci_ZYlrUUAACa9z.jpg)
 
  (https://pbs.twimg.com/profile_images/704436578328817664/oQT8jw72_bigger.jpg) OSIRIS-REx ‏@OSIRISREx  (https://twitter.com/OSIRISREx)  4 ч.4 часа назад (https://twitter.com/OSIRISREx/status/734037625728827398)  
Good morning from the Payload Hazardous Servicing Facility (PHSF)! #ShipToCape (https://twitter.com/hashtag/ShipToCape?src=hash)
  NASA Kennedy / KSC (https://twitter.com/NASAKennedy)  
 (https://pbs.twimg.com/media/Ci_TSfnWYAAuYuT.jpg)
Название: OSIRIS-REx
Отправлено: Salo от 21.05.2016 22:36:41
Цитата (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  3 ч3 часа назад (https://twitter.com/jeff_foust/status/734056759728459776)  
Another angle of #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 (https://pbs.twimg.com/media/Ci_ku8rWkAUAMnt.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  3 ч3 часа назад (https://twitter.com/jeff_foust/status/734055635315228672)  
Whew, there really was a spacecraft inside there. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 (https://pbs.twimg.com/media/Ci_jtfMWsAEE491.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  3 ч3 часа назад (https://twitter.com/jeff_foust/status/734052833746690048)  
Removing the birdcage involves a crane that vaguely resembles a jellyfish. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 (https://pbs.twimg.com/media/Ci_hKbJXEAAyXzo.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  4 ч4 часа назад (https://twitter.com/jeff_foust/status/734047686559698944)
Spacecraft moved into position to remove the interior "birdcage" structure. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
(https://pbs.twimg.com/media/Ci_ce0gWUAAjM-q.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  4 ч4 часа назад (https://twitter.com/jeff_foust/status/734040935659638784)
Unboxing #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 (https://pbs.twimg.com/media/Ci_WV3XWsAEOwnw.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  5 ч5 часов назад (https://twitter.com/jeff_foust/status/734036743964495872)
Getting ready to unpack #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash) in a clean room at KSC.
 (https://pbs.twimg.com/media/Ci_Sh4KXIAABy08.jpg)
Название: OSIRIS-REx
Отправлено: che wi от 31.05.2016 21:13:10
ЦитатаOSIRIS-REx ‏@OSIRISREx  (https://twitter.com/OSIRISREx) 4m ago (https://twitter.com/OSIRISREx/status/737707257538871296)

Wow, time flies! Just 100 days until I depart for my journey #ToBennuAndBack (https://twitter.com/hashtag/ToBennuAndBack?src=hash). #CountdownToLaunch (https://twitter.com/hashtag/CountdownToLaunch?src=hash)
(https://testforum.novosti-kosmonavtiki.ru/forum/file/63361)
Название: OSIRIS-REx
Отправлено: che wi от 22.06.2016 09:02:46
(https://testforum.novosti-kosmonavtiki.ru/forum/file/63714) (https://testforum.novosti-kosmonavtiki.ru/forum/file/63715) (https://testforum.novosti-kosmonavtiki.ru/forum/file/63716)

https://www.flickr.com/photos/nasakennedy/
Название: OSIRIS-REx
Отправлено: che wi от 08.07.2016 08:12:42
Comm tests for OSIRIS-REx conclude (http://www.spaceflightinsider.com/missions/comm-test-osiris-rex-conclude/)

ЦитатаKENNEDY SPACE CENTER, Fla., -- Engineers working on NASA's Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS REx) spacecraft successfully carried out tests of the vehicle's communications systems. The tests were recently conducted at the center's MIL-71 in preparation for a launch currently slated to take place on Sept. 8, 2016.

These tests were the latest milestone that OSIRIS-REx completed in preparation for a flight aloft atop a United Launch Alliance (ULA) Atlas V 411 rocket fr om Cape Canaveral Air Force Station's Space Launch Complex 41 in Florida.

OSIRIS-REx is a sample-return mission that NASA is planning on launching to collect a piece of asteroid Bennu and then fly back to Earth for scientists to study.

The recent tests were held to ensure the spacecraft will be able to send important information to mission managers back on Earth. Data transmitted through the vehicle's communications system includes, but is not limited to, scientific discoveries, the vehicle's overall health and a survey of Bennu.

The tests provided mission planners with the opportunity to see how OSIRIS-REx's communications systems will operate when they are millions of miles in space - even though the test site was located next door to wh ere the spacecraft was situated.

OSIRIS-REx's comms system was checked out at KSC as well as at the space agency's Deep Space Network which has antennas located in Canberra, Australia, California and in Spain. These are not the dishes that the average citizen uses for television or internet services however, some of Deep Space Network's antenna measure 230 feet in diameter.

As one might imagine, for NASA to be able to even conduct the test means that the agency must use a diverse array of equipment and personnel.

If everything goes according to plan, all of the team's hard work will be validated about 20 minutes after the probe soars off the pad and into the sky. At that time, the team should know that the communications systems are working as advertised. This should take place around the same time that the spacecraft separates from Atlas' Centaur upper stage and then deploys its solar array.

OSIRIS-REx cost an estimated $800 million, with the Atlas V 411 booster costing an additional $184 million. The mission's Principal Investigator, Dante Lauretta, hails from the University of Arizona and it is the third mission selected under NASA's New Frontiers Program and

The mission has its work cut out for it as scientists hope it will be able to provide them with a better understanding of how the planets formed and life began on Earth.
Название: OSIRIS-REx
Отправлено: che wi от 26.07.2016 09:00:29
OSIRIS-REx Tech - Surveying an Asteroid with Light (https://www.youtube.com/watch?v=aYmgc9XL_Vs)

https://www.youtube.com/watch?v=aYmgc9XL_Vs (https://www.youtube.com/watch?v=aYmgc9XL_Vs)

ЦитатаNASA's OSIRIS-REx spacecraft is on a mission explore to near-Earth asteroid Bennu, a carbon-rich body that may contain clues to the origins of life. OSIRIS-REx is equipped with a suite of technologies designed to map and study Bennu in unprecedented detail. The OSIRIS-REx Visible and Infrared Spectrometer, or OVIRS, will look at the asteroid's spectral signature to detect organics and other minerals. After OSIRIS-REx has thoroughly surveyed Bennu from orbit, will descend to the surface and collect a sample of the asteroid for return to Earth in 2023. In this video, OVIRS instrument scientists Dennis Reuter and Amy Simon discuss the challenges and rewards of sending a spectrometer into deep space.
Название: OSIRIS-REx
Отправлено: instml от 26.07.2016 10:55:12
http://www.lpi.usra.edu/sbag/meetings/jun2016/presentations/Lauretta.pdf
Название: OSIRIS-REx
Отправлено: Salo от 27.07.2016 21:10:51
Цитата (https://pbs.twimg.com/profile_images/639109886538727424/iqeT58Yk_bigger.jpg) Dante Lauretta ‏@DSLauretta  (https://twitter.com/DSLauretta)  
The @OSIRISREx (https://twitter.com/OSIRISREx) rocket fairing has arrived @NASAKennedy (https://twitter.com/NASAKennedy) - one step closer to launch #ToBennuAndBack (https://twitter.com/hashtag/ToBennuAndBack?src=hash) !
 (https://pbs.twimg.com/media/CoXtZu9XYAA_DSe.jpg)
  5:11 - 27 июл. 2016 г.  
Название: OSIRIS-REx
Отправлено: Salo от 09.08.2016 00:50:02
http://spaceflightnow.com/2016/08/08/buildup-of-unusual-launcher-begins-for-nasas-asteroid-sample-return-mission/
ЦитатаBuildup of unusual launcher begins for NASA's asteroid sample return mission             
 August 8, 2016 (http://spaceflightnow.com/2016/08/) Justin Ray (http://spaceflightnow.com/author/justin-sfn-ray/)
 (http://spaceflightnow.com/wp-content/uploads/2016/08/ASTRA1KR_3-686x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/ASTRA1KR_3.jpg)
File photo of first Atlas 5-411 launch in 2006 with ASTRA 1KR satellite. Credit: Pat Corkery/Lockheed Martin

CAPE CANAVERAL -- It is a rocket like no other, a vehicle with a single solid-fuel booster mounted to its side, that will launch NASA's OSIRIS-REx probe next month to bring back a sample of Asteroid Bennu.
The United Launch Alliance Atlas 5 rocket in the unique 411 configuration, which has successfully flown three times before, is scheduled for liftoff Sept. 8.
Stacking of the vehicle aboard the mobile launch platform began with the first stage this morning at Cape Canaveral's Vertical Integration Facility at Complex 41 for the much-anticipated mission.
The lone solid will be attached tomorrow and the pre-assembled interstage, Centaur upper stage and boattail will be lifted into place on Wednesday.
Initial powerup of the rocket occurs on Thursday and the Combined Systems Test, which is the critical electrical checkout of the vehicle, will follow next Monday, Aug. 15.
"Fr om Monday to Monday, we should have the entire mechanical stack complete and the initial power sequence coupled with the Combined Systems Test. So it's going to go pretty quick," said Tim Dunn, NASA's launch director for OSIRIS-REx from Kennedy Space Center's Launch Services Program.
 (http://spaceflightnow.com/wp-content/uploads/2016/08/orex_stacking.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/orex_stacking.jpg)
File photos of Atlas 5 stacking process. Credit: United Launch Alliance

The strange-looking rocket is all part of the "dial-a-rocket" approach that designers took when creating the Atlas 5 family of vehicles to tailor each launch to the payload. The unconventional 411 variant is not too strong and not too weak, providing just the right amount of power for OSIRIS-REx.
The configuration is unique because rockets typically fly with either no strap-on boosters or multiple motors. While the appearance is stark, many Atlas 5 launches have flown successfully with uneven numbers of boosters attached to the first stage, like the 551 version with three on one side and two on the other.
The SRB's stationary nozzle is oriented to mitigate the offset thrust, leaving the Atlas 5's dual-nozzle main engine to provide the control authority to steer the rocket smoothly through the sky.
"It is unique and different," said Dunn. "The first part of the question is why only one solid? The easy answer there is performance. We needed just a little more performance than the basic 401 could provide. The addition of one solid rocket booster satisfies that...and getting the mass of OSIRIS-REx on its way to the asteroid.
"Then, how do you fly with that one solid hanging off the side? In simplest terms, you let the flight control systems of the Atlas 5 sort it all out. It is a fixed nozzle on the solid strap-on but you have the two vectorable nozzles from the RD-180 engine. They can easily adjust slightly to offset that single thrust moment that is coming from one particular side of the Atlas 5.
"The actuators that steer the nozzles in the pitch and yaw directions, and can also roll the vehicle, they counteract the asymmetrical thrust from the single solid to enable the rocket to fly straight as we like it to."
 (http://spaceflightnow.com/wp-content/uploads/2016/08/ASTRA1KR_1-1014x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/ASTRA1KR_1.jpg)
File photo of first Atlas 5-411 launch in 2006 with ASTRA 1KR satellite. Credit: Pat Corkery/Lockheed Martin

Three earlier 411 launches successfully lofted the commercial European TV satellite, called ASTRA 1KR, from Cape Canaveral in 2006 (http://spaceflightnow.com/atlas/av008/status.html) and two National Reconnaissance Office spy satellite deployment missions -- NROL-28 (http://spaceflightnow.com/atlas/av006/) and NROL-34 (http://spaceflightnow.com/atlas/av027/status.html) -- from Vandenberg Air Force Base in 2008 and 2011. All were performed nominally.
The rocket will come off the pad with 1.2 million pounds of thrust from the RD-180 main engine and solid rocket booster. The lone SRB consumes all of its propellant in about 90 seconds, providing the Atlas 5 an added kick during the initial climb away from the planet. The spent casing then jettisons and leaves the first stage's main engine to continue burning until about four minutes into flight before it separates from the Centaur upper stage.
After two burns by the Centaur, lasting 8 minutes to reach a parking orbit and then 7 minutes to escape onto the interplanetary trajectory, NASA's OSIRIS-REx will separate an hour into the launch to begin its 7-year, roundtrip voyage to collect a sample of Asteroid Bennu and return it to scientific laboratories on Earth.
"We are very excited at participating in a mission bringing a sample of an asteroid back to Earth. That is very exciting," Dunn said.
 (http://spaceflightnow.com/wp-content/uploads/2016/08/a5_411_astra1kr.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/a5_411_astra1kr.jpg)
Atlas 5-411 successfully flies in 2006 with the ASTRA 1KR satellite. Credit: ILS video

The spacecraft has a tight launch window stretching to Oct. 12 to depart Earth or it will miss the planetary alignment between Earth and Bennu for a year.
To ensure the rocket will be ready, crews will move the Atlas-Centaur vehicle from its assembly building to the launch pad on Tuesday, Aug. 23 for a countdown rehearsal and fueling exercise on Wednesday, Aug.24. The Wet Dress Rehearsal is meant to uncover any technical problems that need addressed before the actual launch day.
ULA eliminated WDRs for East Coast launches of its Atlas 5 rocket, saving nearly a week of processing time, except for specific NASA missions that must fly in planetary alignment windows.
"We have an actual option in the contract for our planetary missions wh ere we can turn on the ability to do the WDR," Dunn said. "And what that does is it buys down risk early. If we find something during Wet Dress Rehearsal, it beats finding it on the day of launch."
While the WDR is going on, OSIRIS-REx will be encapsulated within the rocket's aluminum nose cone at KSC's Payload Hazardous Servicing Facility. The fairing is 14 feet in diameter and 39 feet long.
After WDR, the rocket then returns to the Vertical Integration Facility on Thursday, Aug. 25 to await attachment of the OSIRIS-REx payload on Monday, Aug. 29. The 4,650-pound spacecraft, already shrouded in the fairing, will be hoisted into the VIF and mated to the Centaur.
"Once we get clear of the Wet Dress Rehearsal, then we know we are ready to bring the spacecraft out," Dunn said.
The tip-to-tail electrical check of the Atlas 5 rocket and the mated OSIRIS-REx spacecraft -- called the Integrated Systems Test -- is planned for Wednesday, Aug. 31.
The Flight Readiness Review occurs on Thursday, Sept. 1 to assess the progress of work and any outstanding issues, followed by the Mission Dress Rehearsal for control room staff on Friday, Sept. 2 and then a quiet Labor Day Weekend of just monitoring spacecraft health.
The Launch Readiness Review to give approval to proceed with the mission is scheduled for Tuesday, Sept. 6.
The fully assembled vehicle standing 189 feet tall will be rolled out to the pad on Wednesday, Sept. 7 for the countdown and launch on Thursday evening, Sept. 8.
 (http://spaceflightnow.com/wp-content/uploads/2016/08/OSIRIS-REx-Mission-Logo1-1024x883.png) (http://spaceflightnow.com/wp-content/uploads/2016/08/OSIRIS-REx-Mission-Logo1.png)
The OSIRIS-REx logo. Credit: NASA

There will be 25 opportunities to launch OSIRIS-REx each day. The rocket will have distinct shots to fly every five minutes during a two-hour window.
The daily window always opens around 7 p.m. EDT (2300 GMT) and extends two full hours for all but a few days.
Given the time-critical nature of the launch, the Air Force-controlled Eastern Range has reserved three consecutive days for OSIRIS-REx instead of the usual two days before negotiating for more, if needed.
*Sept. 8: 7:05 to 9:05 p.m. EDT (2305-0105 GMT)
 *Sept. 9: 7:10 to 9:10 p.m. EDT (2310-0110 GMT)
 *Sept. 10: 7:05 to 9:05 p.m. EDT (2305-0105 GMT)
"The way targeting works, if we tried to launch at any time for this mission during the window, you would have 60 opportunities per minute, then 60 minutes per hour, times two. There would have been a whole lot of cases to analyze. To make it easier on ourselves with a two-hour window, we broke it into five-minute blocks," Dunn said.
Statistically, a two-hour window for Atlas 5 provides a strong likelihood of getting off the ground.
OSIRIS-REx will rendezvous with the Near-Earth Object Bennu two years after launch and slip into orbit around the asteroid to conduct nearly a year of surveying work with its instruments to map the chemistry and mineralogy of the carbon-rich body.
 (http://spaceflightnow.com/wp-content/uploads/2016/08/HighRes-Spacecraft-TAG2-Light-1024x576.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/HighRes-Spacecraft-TAG2-Light.jpg)
An artist's concept of OSIRIS-REx reaching out to Bennu. Credit: NASA

The craft carries a camera suite that will document the asteroid, search for moons, image in color and features an 8-inch telescope, a laser altimeter to map the shape of Bennu, a thermal emission spectrometer for mineral and temperature data, a visible and infrared spectrometer to identify organic material and a student-made X-ray imaging spectrometer that seeks to determine what elements are present on the asteroid's surface.
Then, on July 4, 2020, the small probe will use its 11-foot-long robotic arm to grab a specimen of the celestial object with a 0.22 mph touch-and-go maneuver. The spacecraft will obtain at least 2.1 ounces and possibly up to 4.4 pounds of regolith.
Once stowed in the protective return capsule, OSIRIS-REx will leave Bennu in 2021 for a two-year journey back home to make a parachute-assisted landing on Earth in September 2023 at the Utah Test and Training Range.
The mission hopes to gain definitive proof of what the conditions were like in the earliest stages of the solar system through the pristine material brought back by OSIRIS-REx, the first U.S.-led asteroid sample return mission.
Lockheed Martin built OSIRIS-REx, which stands 10 feet tall and will be 20 feet wide once its power-producing solar arrays are deployed in space.
The mission is led by the University of Arizona and Principal Investigator Dante Lauretta. The Goddard Space Flight Center manages the mission for NASA.
This will be the 65th Atlas 5 rocket launch since 2002. In its 64 previous missions, the Atlas 5 has flown 25 flights dedicated to the Defense Department, 14 commercial missions, 13 for the National Reconnaissance Office and 12 for NASA.
Название: OSIRIS-REx
Отправлено: che wi от 10.08.2016 22:38:29
(https://testforum.novosti-kosmonavtiki.ru/forum/file/64732) (https://testforum.novosti-kosmonavtiki.ru/forum/file/64733) (https://testforum.novosti-kosmonavtiki.ru/forum/file/64734)
Название: OSIRIS-REx
Отправлено: che wi от 10.08.2016 22:41:08
(https://testforum.novosti-kosmonavtiki.ru/forum/file/64735) (https://testforum.novosti-kosmonavtiki.ru/forum/file/64736)

https://www.flickr.com/photos/nasakennedy/
Название: OSIRIS-REx
Отправлено: Salo от 13.08.2016 13:34:44
http://spaceflightnow.com/2016/08/12/photos-solar-arrays-attached-to-asteroid-bound-osiris-rex-spacecraft/
ЦитатаPhotos: Solar arrays attached to asteroid-bound OSIRIS-REx spacecraft             
 August 12, 2016 (http://spaceflightnow.com/2016/08/) Justin Ray (http://spaceflightnow.com/author/justin-sfn-ray/)
 
At NASA's Kennedy Space Center, workers have finished the pre-launch assembly and fueling of OSIRIS-REx for the asteroid sample return spacecraft for liftoff Sept. 8.
The probe will launch atop a United Launch Alliance Atlas 5 rocket en route to Asteroid Bennu to capture a specimen for return to Earth.
Inside the Payload Hazardous Servicing Facility, the two power-producing solar arrays were attached to the spacecraft's body on Aug. 2. Once deployed in space, the wings will measure 20.25 feet tip-to-tip to generate electricity to power the mission.
This week, the Atlas-Centaur launch vehicle was stacked in the nearby Vertical Integration Facility at Complex 41. And OSIRIS-REx was loaded with 2,700 pounds of propellant that will be used to maneuver the spacecraft into orbit around Bennu and boost the craft back to Earth.
Photo credit: NASA/Ben Smegelsky

(http://spaceflightnow.com/wp-content/uploads/2016/08/01-683x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/01.jpg)
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(http://spaceflightnow.com/wp-content/uploads/2016/08/03-1024x683.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/03.jpg)
(http://spaceflightnow.com/wp-content/uploads/2016/08/04-683x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/04.jpg)
(http://spaceflightnow.com/wp-content/uploads/2016/08/05-1024x683.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/05.jpg)
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(http://spaceflightnow.com/wp-content/uploads/2016/08/07-1024x683.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/07.jpg)
(http://spaceflightnow.com/wp-content/uploads/2016/08/08-683x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/08.jpg)
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(http://spaceflightnow.com/wp-content/uploads/2016/08/11-1024x683.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/11.jpg)
Название: OSIRIS-REx
Отправлено: che wi от 18.08.2016 07:07:57
Аппарат OSIRIS-REx отправится к астероиду Бенну 8 сентября (http://tass.ru/kosmos/3547160)

ЦитатаВАШИНГТОН, 18 августа. /Корр. ТАСС Анатолий Бочинин/. Научный аппарат OSIRIS-REx, который должен будет взять образцы грунта на астероиде Бенну, будет запущен 8 сентября с космодрома на мысе Канаверал (штат Флорида). Об этом в среду сообщили представители NASA.

OSIRIS-REx отправится к пролетающему рядом с Землей астероиду Бенну, чтобы забрать на нем образцы для их последующего активного изучения. Запуск намечен на 19:05 по времени Восточного побережья США, 8 сентября (02:00 9 сентября мск) с космодрома ВВС на мысе Канаверал", - говорится в сообщении.

Как рассказала на прошедшей в тот же день пресс-конференции научный руководитель проекта Данте Лоретта, после своего старта OSIRIS-REx "отправится в семилетнее путешествие, чтобы привезти пробы с астероида Бенну". "Наша команда создала удивительный корабль, и мы готовы к тому, чтобы с его помощью исследовать Бенну и вернуть его (на Землю) с этим научным сокровищем", - сказала она.

Представители NASA подтвердили, что забор образцов может произойти в июле 2020 года, а в сентябре 2023 года OSIRIS-REx вернется на Землю.

OSIRIS-REx оснащен несколькими приборами и механизмами, в том числе фотокамерами, спектрометрами и лазерным высотомером. Аппарат должен выйти на орбиту вокруг Солнца, по которой вращается Бенну, догнать его и приступить к его изучению. Затем будет предпринята операция по захвату грунта с помощью руки-манипулятора, снабженной специальным пневматическим устройством. В общей сложности сотрудники NASA рассчитывают собрать от 60 граммов до 2 кг астероидного грунта.
Название: OSIRIS-REx
Отправлено: che wi от 20.08.2016 08:26:48
Брифинг НАСА от 17 августа

NASA TV Briefing Previews Launch of Asteroid Bound Spacecraft (https://www.youtube.com/watch?v=oeXlI5ndaCk)

https://www.youtube.com/watch?v=oeXlI5ndaCk (https://www.youtube.com/watch?v=oeXlI5ndaCk)
Название: OSIRIS-REx
Отправлено: hlynin от 20.08.2016 16:48:21
- Пресс-кит НАСА. OSIRIS-REX. Миссия по доставке грунта с астероида (NASA Press Kit, OSIRIS-REx. Asteroid Sample Return Mission) (на англ.) (http://epizodsspace.no-ip.org/bibl/inostr-yazyki/NASA-Press-Kit/2016/NASA_Press_Kit_OSIRIS-REx_Asteroid_Sample_Return_Mission_Aug_2016.pdf) Август 2016 в pdf - 1,95 Мб
Название: OSIRIS-REx
Отправлено: Salo от 22.08.2016 00:22:31
Цитата (https://pbs.twimg.com/profile_images/639109886538727424/iqeT58Yk_bigger.jpg) Dante Lauretta ‏@DSLauretta  (https://twitter.com/DSLauretta)
Fare Thee Well @OSIRISREx (https://twitter.com/OSIRISREx) - a proud and bittersweet moment - my last visit with the spacecraft before launch
 (https://pbs.twimg.com/media/CqZDqgQWEAAunWz.jpg)
  7:59 - 21 авг. 2016 г.
Название: OSIRIS-REx
Отправлено: Salo от 22.08.2016 16:26:59
http://www.ulalaunch.com/atlas-v-to-launch-nasas-osirisrex.aspx?title=Atlas+V+to+Launch+OSIRIS-REx+Asteroid+Sample+Return+Mission&Category=2
ЦитатаAtlas V to Launch OSIRIS-REx Asteroid Sample Return Mission

Atlas V OSIRIS-REx Mission Overview (http://www.ulalaunch.com/uploads/docs/Mission_Booklets/AV/av_osirisrex_mob.pdf)

(http://www.ulalaunch.com/uploads/images/ORExWeb.jpg)
Rocket/Payload:
A United Launch Alliance Atlas V 411 configuration rocket will launch the Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) mission for NASA.

Date/Site/Launch Time:Thursday, Sept. 8, 2016, from Space Launch Complex (SLC)-41 at Cape Canaveral Air Force Station, Florida. Launch is planned for 7:05 p.m. EDT.

Webcast: Look for details about the launch broadcast closer to launch day.

Launch Notes: OSIRIS-REx marks the 65th Atlas V launch and the fourth in the 411 configuration. This also will be ULA's 111th launch since the company was formed in 2006.

Mission Description: The OSIRIS-REx mission will help scientists investigate the origins of our solar system, how water and organic material traveled to Earth, and increase understanding of asteroids that could impact Earth. In addition, the sample returned to Earth will further our understanding of water, organics and precious metals on asteroids, which could fuel future exploration missions.

Launch Updates: To keep up to speed with updates to the launch countdown, dial the ULA launch hotline at 1-877-852-4321 or join the conversation at www.facebook.com/ulalaunch (https://www.facebook.com/ulalaunch), twitter.com/ulalaunch (https://twitter.com/ulalaunch) and instagram.com/ulalaunch (https://instagram.com/ulalaunch); hashtags #ToBennuAndBack and #AtlasV.

Go Atlas! Go Centaur! Go OSIRIS-REx!
Название: OSIRIS-REx
Отправлено: Salo от 23.08.2016 15:11:23
http://spaceflightnow.com/2016/08/23/one-of-nasas-cleanest-spacecraft-ever-is-ready-to-fly/
ЦитатаOne of NASA's cleanest spacecraft ever is ready to fly             
 August 23, 2016 (http://spaceflightnow.com/2016/08/) Stephen Clark (http://spaceflightnow.com/author/stephen-clark/)
 (http://spaceflightnow.com/wp-content/uploads/2016/08/IMG_7122.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/IMG_7122.jpg)
A member of the OSIRIS-REx team prepares the spacecraft for launch Sept. 8. The Atlas 5 rocket's payload fairing is in the background. Credit: Ben Cooper/Launchphotography.com

Five years after winning $1 billion fr om NASA to mount the first U.S. asteroid sample return mission, scientists and engineers will get their last look at the OSIRIS-REx spacecraft this week as it is closed up inside the nose cone of an Atlas 5 rocket for launch in September.
The probe's encapsulation inside the Atlas 5's payload fairing marks the end of a multi-year campaign to ensure every piece of the spacecraft meets stringent cleanliness standards. During construction, engineers tracked contaminants wherever OSIRIS-REx went on Earth, all the way down to concentrations measured in parts per billion.
Experts were especially concerned with organic residue left behind by humans and certain materials, like nylon and adhesives, normally used in the assembly of satellites.
OSIRIS-REx will bring back specimens for researchers to interrogate inside high-tech labs around the world, seeking clues about the origin of life, water and the planets themselves. The results could be skewed by an unexpected microbe or spore fr om planet Earth.
Small clumps of matter formed fr om a cloud of dust and gas at the dawn of the solar system. These proto-worlds grew into larger objects -- and some became full-fledged planets -- as they collided with one another, accreting more and more material along the way. Scientists believe asteroids brought the ingredients of life to Earth.
Analysts will look for amino acids -- the building blocks of proteins -- simple and complex organic compounds, and other markers fr om asteroid Bennu, an object orbiting the sun relatively close to Earth that managers sel ected as OSIRIS-REx's target.
"The core of OSIRIS-REx is to return a sample to the Earth to understand the origin of the solar system, and the origin of life perhaps, and to do that we need a pristine sample," said Jason Dworkin, OSIRIS-REx project scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland.
For scientists and engineers working on OSIRIS-REx, this week is a turning point. It's the last time they will see the spacecraft -- the product of 12 years of research and development -- but it also means their long-held worries about contaminating the probe are nearly over.
"It's incredibly emotional," Dworkin said.
"It's hard not to tear up around the spacecraft, but I don't want to contaminate it," he joked.
The schedule calls for the 4,651-pound (2,110-kilogram) spacecraft, already filled with hydrazine fuel for delicate in-space maneuvers, to be lifted on to an attach fitting this week inside the Payload Hazardous Servicing Facility at NASA's Kennedy Space Center, then enclosed within the Atlas 5's 13-foot diameter (4-meter) nose fairing.
"We have a completely fueled spacecraft that's ready to go," said Rich Kuhns, OSIRIS-REx program manager at Lockheed Martin, which built the spacecraft. "Over the next few days, what're going to do is we're actually going to lift the spacecraft onto the mechanism that will separate it fr om the top of the Centaur stage. Then we're going to. .. close it up inside of the fairing, which will then get shipped over to the launch pad and stacked on top of the overall rocket."
Ground crews will position the OSIRIS-REx spacecraft between two halves of the fairing, which will peel away in flight like a clamshell, then seal the probe inside.
"This is the last chance really for anybody on Earth to see that hardware until the sample is back in 2023, and only the return capsule is coming back," said Dante Lauretta, OSIRIS-REx principal investigator fr om the University of Arizona.
 (http://spaceflightnow.com/wp-content/uploads/2016/08/28766251840_3d5d29a5a3_k.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/28766251840_3d5d29a5a3_k.jpg)
Dante Lauretta, OSIRIS-REx principal investigator fr om the University of Arizona. Credit: NASA/Joel Kowsky

On Aug. 29, technicians will transport the spacecraft inside the fairing to the Vertical Integration Facility at Cape Canaveral's Complex 41 launch pad, where a crane will hoist the payload atop the Atlas 5.
Engineers plan to pluck the final "remove before flight" covers from OSIRIS-REx's instruments and sensors before encapsulation. The last time anyone will put hands on the spacecraft before launch will come in the predawn hours of Sept. 6, when a technician will crawl through a special access door cut into the Atlas 5 fairing to activate OSIRIS-REx's battery system.
A United Launch Alliance Atlas 5 rocket will kick off the probe's seven-year journey Sept. 8. The two-hour launch window opens at 7:05 p.m. EDT (2305 GMT), and the mission has until Oct. 12 to depart Earth or else wait a year for the next opportunity.
OSIRIS-REx will return to the vicinity of Earth in September 2017 for a gravity assist, slingshotting the probe toward asteroid Bennu, a miniature world about 1,600 feet (500 meters) across. Bennu is a rare kind of object -- scientists know it as a "B-type" asteroid -- and is likely loaded with lots of carbon, the backbone of organic molecules.
In August 2018, the solar-powered voyager will begin its final approach to the asteroid, and eventually slip into orbit.
After a thorough survey of Bennu with OSIRIS-REx's spectrometers, cameras and laser altimeter, scientists will decide wh ere to snag a sample.
The payload package will look for organics and collect detailed temperature measurements all across Bennu, which has regions colder than an icebox and others hot enough to boil water.
The asteroid has a surface area of about 200 acres -- 0.78 square kilometers -- and some of OSIRIS-REx's instruments will capture data with centimeter-scale resolution, or better. The observations will add context to the sample OSIRIS-REx will return to Earth, and identify resources that might be valuable for astronauts in the future.
During the next phase of the mission, in late 2019, mission scientists will narrow down targets for OSIRIS-REx to go down and snatch up a piece of Bennu. A final decision by top NASA management will pick the sampling site based on several factors, primarily to avoid damaging the spacecraft and to maximise the likelihood of capturing primitive, pre-biotic material, the mission's scientific payoff.
Keiko Nakamura-Messenger, a space scientist working at NASA's Johnson Space Center in Houston, leads the group charged with recommending a place on Bennu to sample.
"We want to identify an area which has a high concentration of organics and a variety of minerals, so that we can answer the scientific questions, or at least as many as possible," Nakamura-Messenger said in an interview with Spaceflight Now.
There are limitations, however, on wh ere OSIRIS-REx can go. The mechanism aboard the probe to gather the asteroid specimens can only handle rocks up to three-quarters of an inch -- about 2 centimeters -- in diameter, so officials prefer a site with fine dust grains or a gravelly outer layer.
"We don't need a big rock," Nakamura-Messenger said. "We just need the signature of those organics."
When NASA gives the green light to send OSIRIS-REx to the sampling site, a device called the TAGSAM will swing into action. Mounted on the end of of an articulating 11.1-foot (3.4-meter) robot arm, TAGSAM is about the size of a dinner plate, resembling an air filter affixed to an antique automobile.
TAGSAM is short for the Touch and Go Sample Acquisition Mechanism.
Starting from a point a few thousand feet -- less than a kilometer -- from Bennu, the spacecraft will fire thrusters to leave orbit, then adjust its speed to match the asteroid's rotation, allowing OSIRIS-REx to hover over the sampling target as it goes in for the prize, a sporty approach currently scheduled some time around July 4, 2020.
"We feel that gives us almost two years at the asteroid to map it with precision and help us in our decision wh ere to go, then rehearse and refine the sampling attempt," Lauretta said.
 (http://spaceflightnow.com/wp-content/uploads/2016/08/OSIRIS_Arm_Deploy_print-1.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/OSIRIS_Arm_Deploy_print-1.jpg)
Artist's concept of the OSIRIS-REx spacecraft with the TAGSAM sampling arm deployed. Credit: NASA

The descent will be slow and methodical. Bennu's tenuous gravity will pull on the spacecraft at just 10 micro-g, equivalent to ten one-millionths the strength of Earth's gravity, making the approach more like rendezvous with the space station than landing on another planet.
"Its very much like a docking," Lauretta said. "We're under our own thrust authority the whole time. The gravity field is, more or less, insignificant at that point."
OSIRIS-REx will reach Bennu's surface at a velocity of approximately two-tenths of a mph -- 10 centimeters per second -- a fraction of a normal walking pace. The spacecraft will not stay there for long, taking just five seconds for TAGSAM to do its job as the nozzle contacts the asteroid.
A bottle of compressed nitrogen gas will discharge during the touch-and-go maneuver, scouring up bits of dust and rock from up to 8 inches (20 centimeters) beneath Bennu's surface, wh ere material should be shielded from wild temperature swings that could damage sensitive organics.
The TAGSAM nozzle will trap samples blown away by the pulse of nitrogen and suck them into a collector with a rush of air, similar to the way a vacuum cleaner works. A camera aimed at the collector will record how it works at one frame per second. The imagery, coupled with precise measurements of changes in the spacecraft's mass, will tell engineers how the device performed.
The criteria for success? 2.1 ounces, or 60 grams, of goods.
That's enough for scientists back on Earth to try and unravel the constituents and history of Bennu, an object experts believe is representative of the mountain-sized boulders that populated the early solar system, when bodies buzzed through space like billiard balls, bombarding the proto-planets that later became Earth and its neighbors.
Tests of the TAGSAM before launch showed the mechanism should collect many times more than the minimum requirement of 60 grams. If scientists are not satisfied with the first try, OSIRIS-REx carries two backup nitrogen canisters for additional sampling attempts.
"In their testing, they routinely picked up 300, 400 or 500 grams (10 to 17 ounces), so I'm expecting hundreds of grams of sample," Lauretta said.
"We feel like we've designed it to the worst-case scenario, but you don't know until you try," Lauretta said. "It's such a nail-biting moment. If we go down and everything works and we collect a sample, we don't want to do anything to risk that material. We just spent all this time, and all this money, to get that sample in, and that alone represents our science. That sample is extremely valuable, and the last thing I want do is go in for more and lose everything."
Once the sample is captured, controllers will send commands for the TAGSAM arm to place the collection canister inside OSIRIS-REx's landing capsule. Explosive bolts will sever the TAGSAM head from the craft's robotic arm, and the capsule's lid will close over the device for the trip home.
 (http://spaceflightnow.com/wp-content/uploads/2016/08/28588418090_94495d52bc_k.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/28588418090_94495d52bc_k.jpg)
Technicians and engineers install a solar panel on the OSIRIS-REx spacecraft. Credit: NASA/Ben Smegelsky

The mission will move on to other tasks if it scoops up enough material the first time, including a measurement of the forces impacting Bennu's orbit to better predict its future path. There is a 1-in-2,700 chance the asteroid will impact Earth late in the 22nd century, and OSIRIS-REx will try to refine that probability.
Engineers put stringent controls on the cleanliness of the OSIRIX-REx spacecraft, especially the parts that will touch the asteroid specimens, to ensure the material comes home unaltered by chemicals that could erase the organic signals sought by the science team.
According to Kuhns, the cleanliness protocols were one of the mission's biggest challenges.
"A lot of it impacted how we build," Kuhns said.
He says engineers who designed the spacecraft could not use many of the lubricants and glues they would on a typical mission. On one part of the TAGSAM system, for example, technicians could not use a preferred type of epoxy glue, so engineers sel ected the right set of screws, inserts and metals to add extra torque to certain fasteners, bypassing the need for an adhesive.
"The whole goal is to get the sample from the asteroid and bring it back safely, so we are carrying extremely tight contamination requirements that go well above and beyond what we typically have," Kuhns said in an interview. "We have to watch amino acids, and specific organic constituents, because that's what we're trying to find out about the asteroid."
Engineers also substituted lock wires for glues, and workers had to replace nylon tethers used in pre-launch processing with other ways of securing tools and parts.
"That tether we've used for 30 years, we couldn't use any more," Kuhns told Spaceflight Now.
Realizing the mission's super-clean standards, ground crews kept the TAGSAM unit that will fly to Bennu separate from the rest of OSIRIS-REx until the very end of the spacecraft's assembly campaign to avoid potentially spoiling the hardware with Earth microbes.
Dworkin said scientists hope to get back a sample from Bennu just as the material exists on the asteroid.
"To understand what things were like on the early Earth and in the early solar system, we have to go to objects that still exist in a primordial pristine date that haven't been perturbed by geology," Dworkin said. "Meteorites deliver that information to the Earth from asteroids, but they invariably land on the ground and become instantly contaminated with terrestrial biology, and atmospheric entry to the Earth."
Researchers can still glean some results from analyzing meteorites, and teams have found amino acids in space rocks that fell to Earth.
Engineers did not sterilize the OSIRIS-REx spacecraft -- a costly step that NASA ordered before it launched the Viking landers to Mars in the 1970s -- but they took other measures to ensure the asteroid probe leaves Earth as clean as possible.
Scientists have archived some of the materials used during assembly of the OSIRIS-REx spacecraft, and workers installed collection plates throughout the probe's construction facility near Denver and inside the clean room at Kennedy Space Center.
 (http://spaceflightnow.com/wp-content/uploads/2016/08/ss-reentry.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/ss-reentry.jpg)
Artist's concept of the OSIRIS-REx sample return canister streaking through Earth's atmosphere. Credit: NASA/University of Arizona

The plates accumulated contaminants fr om the atmosphere around OSIRIS-REx, and researchers will hang on to them until the mission returns with bits of Bennu in 2023. Scientists even sequenced some of the DNA found inside OSIRIS-REx's clean room, according to Dworkin.
The idea is to archive the materials for future scientists to compare against the asteroid specimens, helping them rule out any false detection.
Loaded with celestial goodies, OSIRIS-REx's 100-pound (60-kilogram) sample return canister will blaze into Earth's atmosphere at around 9 a.m. Mountain time on Sunday, Sept. 24, 2023. A recovery team will await the capsule at a landing site in Utah, then ship the carrier to NASA's Johnson Space Center in Houston, wh ere scientists will first open the canister.
Researchers will use optical and electron microscopes, super-computing labs, and synchrotron accelerators -- instruments the size of a large room or a building -- in their asteroid sample analysis.
Scientific equipment qualified to fly in space have to operate in extreme temperatures, an airless vacuum, and intense radiation, all while functioning on very little power.
"Instrument designs are frozen years before the spacecraft is launched," Dworkin said. "Furthermore, those instruments have to be built on known heritage. They have to work, and they have to work perfectly. That means they're no longer state-of-the-art. They're state-of-the-art in terms of being tiny, and working under the harshest conditions with the lowest power margins.
"It's amazing what they can do, but when you bring something to a laboratory that has kilowatts of equipment, that takes us half a room or even an entire building, and require a staff just to keep them running, you can measure things at tremendously higher precision and higher accuracy," Dworkin said.
For example, scientists will attempt to determine the chirality, or handedness, of amino acids and other compounds grabbed fr om Bennu. Molecules associated with life, such as DNA, have a distinctive orientation. In the case of DNA in organisms on Earth, the double helix always twists in a right-handed direction, and the atoms that make up amino acids in biology are almost always left-handed.
The preference for a left or right orientation among the atoms making up biological molecules makes it easier for chemicals to latch together and build more complex structures.
 (http://spaceflightnow.com/wp-content/uploads/2016/08/657555main_TagishLake_Article1_2012_lgweb.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/657555main_TagishLake_Article1_2012_lgweb.jpg)
Artist's concept of excess left-hand aspartic acid created in asteroids and delivered to Earth via meteorite impacts. The line at the bottom is a chromatogram showing that left-hand aspartic acid (tall peak in the center, with diagram of left-hand aspartic acid molecule on top) was four times more abundant in the meteorite sample than right-hand aspartic acid (smaller peak to the left, with right-handed aspartic acid molecule on top). Credit: NASA/Hrybyk-Keith, Mary P.

But the reasons why molecules involved in biology are almost always left- or right-handed, depending on the compound, remain a mystery.
"There are a few different amino acids which have been seen that have an excess of left-handed chirality in a variety of meteorites. Never an excess of the right-handed, always the left," Dworkin said. "That makes you wonder is there a solar system process that makes left preferential. We've looked at a variety of meteorites and always seen an excess of left, or no excess, in the amino acids."
But the concern over contamination raises a red flag when scientists are studying meteorites. Thanks to the extensive cleanliness protocols institute before launch, that won't be the cause with the samples returned by OSIRIS-REx.
"There are amino acids wh ere you see a left excess (in handedness), but you don't know if you can believe it because the easiest explanation is to say it's contaminated," Dworkin said. "You have to go to extensive lengths to prove that it's not contamination. Sometimes you just can't do it. Being able to say, with certainty, that we can see that there's an excess in this compound, and that compound, but not this other compound, will help us understand the mechanisms that led into making these products."
If life-supporting molecules found on Bennu show the same handedness of similar compounds on Earth, scientists might conclude the mechanism that triggered their excessive left or right orientation is  a natural occurrence, and not just chance.
"Amino acids are really interesting in their chirality," Dworkin told Spaceflight Now. "There's also some reports of some sugar acids and related compounds that have a chiral excess. But this is the only natural non-biological process wh ere's there's evidence of chiral excess, so how that formed is a great mystery of science that we need to address."
"We need these samples in our laboratories," Lauretta said. "We're having a conversation about chirality, which is the handedness of key organic molecules, and life has a particular preference for one mirror image over the other. You can't fly an instrument on a spacecraft to make that kind of measurement."
Название: OSIRIS-REx
Отправлено: che wi от 23.08.2016 18:52:44
ЦитатаDante Lauretta ‏@DSLauretta  (https://twitter.com/DSLauretta) · 1 hour ago (https://twitter.com/DSLauretta/status/768093612366237698)

The @OSIRISREx (https://twitter.com/OSIRISREx) Solid Rocket Motor installed - with humans for scale
(https://testforum.novosti-kosmonavtiki.ru/forum/file/64950)
Название: OSIRIS-REx
Отправлено: Salo от 25.08.2016 13:31:36
https://blogs.nasa.gov/osiris-rex/2016/08/24/osiris-rex-spacecraft-encapsulated-atlas-v-rocket-tanking-test-planned/
ЦитатаOSIRIS-REx Spacecraft Encapsulated, Atlas V Rocket Tanking Test Planned
Posted on August 24, 2016 at 4:11 pm (https://blogs.nasa.gov/osiris-rex/2016/08/24/osiris-rex-spacecraft-encapsulated-atlas-v-rocket-tanking-test-planned/) by Anna Heiney (https://blogs.nasa.gov/osiris-rex/author/aheiney/).          
(http://blogs.nasa.gov/osiris-rex/wp-content/uploads/sites/261/2016/08/KSC-20160819-PH_GEB01_0021-1024x683.jpg) (http://blogs.nasa.gov/osiris-rex/wp-content/uploads/sites/261/2016/08/KSC-20160819-PH_GEB01_0021.jpg)
Photo credit: NASA/Glenn Benson

NASA's OSIRIS-REx spacecraft comes one step closer to launch today as it is sealed inside the two-piece payload fairing that will protect it during the critical early minutes of liftoff. This process, called encapsulation, is taking place inside the Payload Hazardous Servicing Facility (PHSF) at Kennedy Space Center, where OSIRIS-REx has undergone prelaunch processing since its arrival in Florida in May.
The United Launch Alliance Atlas V rocket that will boost OSIRIS-REx into space also is progressing toward launch day. The first-stage booster and its Centaur upper stage are in place at Space Launch Complex 41 on Cape Canaveral Air Force Station, where a tanking test is planned for Thursday.
Early Monday morning, the payload fairing containing OSIRIS-REx will roll fr om the PHSF to the launch pad, wh ere it will be mated to the Atlas V.

                       (https://blogs.nasa.gov/osiris-rex/wp-content/uploads/sites/261/2016/05/osiris-rex-blog-banner1.jpg) (https://blogs.nasa.gov/osiris-rex/)

Название: OSIRIS-REx
Отправлено: Salo от 26.08.2016 01:38:20
http://spaceflightnow.com/2016/08/25/atlas-5-rocket-rehearses-countdown-for-upcoming-launch-to-asteroid-bennu/
ЦитатаAtlas 5 rocket rehearses countdown for upcoming launch to Asteroid Bennu             
 August 25, 2016 (http://spaceflightnow.com/2016/08/) Justin Ray (http://spaceflightnow.com/author/justin-sfn-ray/)
 (http://spaceflightnow.com/wp-content/uploads/2016/08/a5WDRorex-1024x683.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/a5WDRorex.jpg)
The venting Atlas 5 during today's WDR. Credit: NASA-KSC/Kim Shiflett

CAPE CANAVERAL -- Running through a practice countdown to check systems before launching a NASA sample-return probe to Asteroid Bennu in exactly two weeks, an Atlas 5 successfully completed its Wet Dress Rehearsal today.
The United Launch Alliance rocket will propel the OSIRIS-REx spacecraft on a trajectory to intercept the asteroid for a daring "touch-and-go" maneuver to grab a specimen that the satellite will bring back to Earth.
The 7-year, round trip adventure launches Sept. 8 at 7:05 p.m. EDT (2305 GMT).
In preparation for departing Earth, the Atlas 5 was moved from its assembly building to the pad at Complex 41 yesterday and took on 25,000 gallons of RP-1, a highly refined kerosene fuel for the first stage.
During today's seven-hour countdown, the Atlas-Centaur was filled with 65,000 gallons of cryogenic liquid hydrogen and liquid oxygen under a realistic sequence.
It was all part of NASA's desire to simulate launch day for the Atlas 5 to uncover any technical bugs in the launch pad equipment or flight hardware before the planned liftoff date.
"If buys down risk early. If we find something during Wet Dress Rehearsal, it beats finding it on the day of launch. If it's something that can be changed out -- like a valve -- or an irregularity with cryogenic tanking, it's worth it for us," said OSIRIS-REx Launch Director Tim Dunn.
WDRs have become a rarity for Atlas 5 missions on the East Coast in recent years as United Launch Alliance phased them out to reduce the time it takes to prepare a rocket for flight.
"As part of ULA's initiatives over the last several years, they informed us four years ago that they wanted to eliminate WDRs from the sequence. We said we could get comfortable with that, except for our planetary missions," Dunn said.
The OSIRIS-REx mission has a tight window, extending only to Oct. 12, in which to launch due to Earth's alignment with the asteroid. That factor alone drove NASA to request a WDR for this Atlas 5 rocket as insurance the spacecraft will fly.
After draining the cryos from the Atlas-Centaur this afternoon, the rocket will be allowed to warm up before it is rolled back to the Vertical Integration Facility tomorrow. The OSIRIS-REx payload, which was encapsulated in the nose cone yesterday at the Payload Hazardous Servicing Facility, will mounted atop the vehicle on Monday.
On Sept. 8, the Atlas 5 will have 25 launch opportunities, one every five minutes, during a two-hour period extending from 7:05 to 9:05 p.m. EDT (2305-0105 GMT).   
It will take nearly an hour for the rocket to accelerate OSIRIS-REx to the proper velocity and release the probe to begin a two-year outbound journey to reach Bennu.
The launch will mark the 65th for the Atlas 5 program.
The rocket's most recent flight July 28 eclipsed the Atlas 2 program's stellar record of 100 percent reliability in 63 straight successes between 1991 and 2004 for every Atlas 2, 2A and 2AS rocket ever launched. But now Atlas 5 has one-upped Atlas 2 with a history that stands at 64 successes since 2002 and counting.
Название: OSIRIS-REx
Отправлено: che wi от 27.08.2016 06:02:23
ЦитатаDante Lauretta ‏@DSLauretta  (https://twitter.com/DSLauretta) · 5 hours ago (https://twitter.com/DSLauretta/status/769289380951392256)

Payload fairing and @OSIRISREx (https://twitter.com/OSIRISREx) lifted onto the transport vehicle. Stacking on top of the rocket on Monday morning.
(https://testforum.novosti-kosmonavtiki.ru/forum/file/65001)
Название: OSIRIS-REx
Отправлено: Salo от 29.08.2016 22:42:42
http://spaceflightnow.com/2016/08/29/probe-hoisted-aboard-launcher-to-leave-earth-next-week-on-asteroid-adventure/
ЦитатаProbe hoisted aboard launcher to leave Earth next week on asteroid adventure             
 August 29, 2016 (http://spaceflightnow.com/2016/08/) Justin Ray (http://spaceflightnow.com/author/justin-sfn-ray/)
 (http://spaceflightnow.com/wp-content/uploads/2016/08/mate-683x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/mate.jpg)
File photo of Atlas payload lift and mate. Credit: United Launch Alliance

CAPE CANAVERAL -- NASA's OSIRIS-REx spacecraft today moved a step closer to starting a voyage to explore an uncharted world in our solar system -- the mountain-sized Asteroid Bennu -- by joining the booster rocket that will propel it fr om Earth next week.
Liftoff fr om Cape Canaveral atop a United Launch Alliance Atlas 5 rocket remains on schedule for Thursday, Sept. 8 at 7:05 p.m. EDT (2305 GMT). Launch will be possible at every five-minute interval for two hours till the window closes at 9:05 p.m. EDT (0105 GMT).
The $800 million OSIRIS-REx project is the first U.S.-led asteroid sample return mission, a 7-year trek to grab a piece of Bennu and bring it back to Earth for study.
"We're interested in material from the earliest stages of solar system formation," said Dante Lauretta, the OSIRIS-REx principal investigator.
"We started out as a giant molecular cloud that collapsed down, conservation of angular momentum caused that material that didn't fall down into the proto-sun at the center to spin out into a disk. Inside that disk is wh ere the planets formed, but before that could happen, material condensed into very tiny grains, dust, ice and organic molecules. We think those organic molecules were critical for the origin of life on our planet, and tantalizing clues are provided as to the possibility of the origin of life on other planets."
Like a time capsule, the primitive Bennu holds an unspoiled record of the conditions that existed during the solar system's formation 4.5 billion years ago. OSIRIS-REx will collect up to four mounds of that material and return it in a pristine canister, landing in Utah on Sept. 24, 2023.
"I've been interested in phosphorus compounds, and trace phosphates, which may be critical for DNA, RNA, ATP, critical molecules for our genetic information and for our energy in our cells. It's only by getting these samples into laboratories on Earth that we can address the fundamental science questions that we're interested in," Lauretta said.
In preparation for the mission, the spacecraft was driven from Kennedy Space Center's Payload Hazardous Servicing Facility to Cape Canaveral's Complex 41 before dawn today, pulling up to the doorway of the Vertical Integration Facility wh ere the Atlas 5 rocket was assembled aboard a mobile launch platform.
Already hidden from view inside the rocket's aluminium nose cone, the satellite was hoisted from its transporter by an overhead crane and maneuvered atop the Centaur upper stage for mating.
The payload connection tops off the rocket at 189 feet tall.
 (http://spaceflightnow.com/wp-content/uploads/2016/08/OREX_Sticker-718x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/08/OREX_Sticker.jpg)
The mission poster. Credit: United Launch Alliance

The Integrated Systems Test -- a tip-to-tail electrical checkout of the combined satellite and launch vehicle -- will be performed later this week, followed by holding the Flight Readiness Review.
After a quiet three-day holiday weekend, the Launch Readiness Review will be conducted next Tuesday and the rocket rolls out to the pad next Wednesday, the day before liftoff.
Here's a look at some stats about the AV-067 launch. This will be:
    [/li]
  • The 647th launch for Atlas program since 1957
     
  • The 352nd Atlas launch from Cape Canaveral
     
  • The 236th mission of a Centaur upper stage
     
  • The 213th use of Centaur by an Atlas rocket
     
  • The 472nd production RL10 engine to be launched
     
  • The 71st flight of an RD-180 main engine
     
  • The 65th launch of an Atlas 5 since 2002
     
  • The 13th NASA use of Atlas 5
     
  • The 54th launch of an Atlas 5 from Cape Canaveral
     
  • The 5th Atlas 5 launch of 2016
     
  • The 98th Evolved Expendable Launch Vehicle flight
     
  • The 111th United Launch Alliance flight overall
     
  • The 57th Atlas 5 under United Launch Alliance
     
  • The 26th NASA launch by United Launch Alliance
     
  • The 80th United Launch Alliance flight from Cape Canaveral
     
  • The 44th 400-series flight of the Atlas 5
     
  • The 4th Atlas 5 to fly in the 411 configuration
     
  • The 81st launch from Complex 41
     
  • The 54th Atlas 5 to use Complex 41
Название: OSIRIS-REx
Отправлено: che wi от 30.08.2016 09:28:13
(https://testforum.novosti-kosmonavtiki.ru/forum/file/65043)
Название: OSIRIS-REx
Отправлено: azeast от 02.09.2016 07:13:47
http://tass.ru/kosmos/3584475

Срок запуска американского научного зонда OSIRIS-REx к астероиду Бенну, намеченный на 8 сентября, остается в силе. Как сообщило Национальное управление США по аэронавтике и исследованию космического пространства (NASA), на график экспедиции не повлиял взрыв ракеты-носителя Falcon 9 со спутником связи Amos-6 на космодроме, расположенном на мысе Канаверал (штат Флорида).
"Запуск OSIRIS-REx по-прежнему намечен на 8 сентября. Предварительный осмотр показал, что ракета-носитель и космический аппарат не повреждены и находятся в целости. Они расположены в 1,8 км от стартового стола компании SpaceX (разработала Falcon 9)", - уточнили в космическом ведомстве США.
Название: OSIRIS-REx
Отправлено: che wi от 04.09.2016 09:07:03
(https://testforum.novosti-kosmonavtiki.ru/forum/file/65162)
Название: OSIRIS-REx
Отправлено: Salo от 05.09.2016 00:53:02
Цитата (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  8 ч.8 часов назад (https://twitter.com/jeff_foust/status/772428571042209792)  
Long-range forecast estimates 80% of acceptable weather for Thursday evening's Atlas 5/OSIRIS-REx launch: http://bit.ly/2bLZu7D  (https://t.co/AIA4WCvsP1)
Название: OSIRIS-REx
Отправлено: Salo от 05.09.2016 00:55:15
http://spaceflightnow.com/2016/09/04/weather-forecast-favorable-for-atlas-5-to-launch-nasa-asteroid-probe-thursday/
ЦитатаWeather forecast favorable for Atlas 5 to launch NASA asteroid probe Thursday             
 September 4, 2016 (http://spaceflightnow.com/2016/09/) Justin Ray (http://spaceflightnow.com/author/justin-sfn-ray/)
 (http://spaceflightnow.com/wp-content/uploads/2016/09/weather_front-1024x578.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/09/weather_front.jpg)
File photo of Atlas 5. Credit: United Launch Alliance

CAPE CANAVERAL -- Prognosticators are predicting favorable weather conditions to launch an Atlas 5 rocket Thursday and send NASA's OSIRIS-REx spacecraft on its interplanetary journey to interrogate an asteroid and collect a surface sample for return to Earth.
The Air Force's 45th Weather Squadron at Cape Canaveral forecasts an 80 percent chance of acceptable launch conditions. The primary concerns for launch will be cumulus and anvil clouds.
The United Launch Alliance vehicle will have 24 split-second opportunities to launch, one coming every five minutes throughout a two-hour window from 7:05 to 9:00 p.m. EDT (2305-0100 GMT).
The flight will originate from Cape Canaveral's Complex 41. The rocket will be rolled from its assembly building to the pad on Wednesday morning.
The specifics for the launch window include scattered low- and high-level clouds, good visibility, winds from the east at 10 to 15 knots, a relative humidity of 80 percent and a temperature of 83 degrees F.
"Afternoon and evening thunderstorms continue to favor the interior with a coastal shower threat during the evening and overnight hours. Winds from the east with gusts in the mid to upper teens during the count. Upper level winds from the west will act to transport anvil cloud from interior thunderstorms back toward the East Coast," Air Force meteorologists said today.
If the launch slips to 24 hours for some reason, the two-hour window on Friday opens at 7:10 p.m. EDT (2310 GMT) with a 70 percent chance of acceptable weather.
"In the event of a 24-hour delay, moisture continues to recover with an increased coastal shower threat associated with an upper level trough. The primary concerns for a 24-hour delay are cumulus clouds and anvil clouds," forecasters report.
Given the time-critical nature of the launch, with only 34 days to depart Earth while the planet is aligned with Asteroid Bennu, the Air Force-controlled Eastern Range has reserved three consecutive days for OSIRIS-REx instead of the usual two days before negotiating for more, if needed.
Weather for Saturday's launch opportunity opening at 7:05 p.m. EDT (2305 GMT) calls for another 70-percent chance of meeting the criteria.
OSIRIS-REx will reach Bennu two years after launch, enter orbit around the mountain-sized space rock to use its instruments to intimately map the chemistry and terrain of the asteroid and sel ect a target accessible and scientifically-rich sample site.
In the summer of 2020, the spacecraft will deploy its robot arm and grab up to four pounds of primordial surface material that could hold organics and the ingredients of life left over fr om the formation of the solar system.
After stowing the pristine soil into a contamination-free landing pod, the spacecraft will fly back to Earth and eject the canister to land in Utah on Sept. 24, 2023, completing a 4.4-billion-mile trek.
On Saturday, launch site workers completed special cleaning procedures on the vehicle. The precautionary task followed the nearby SpaceX rocket explosion that sent a dark cloud of smoke billowing toward the Atlas 5 rocket's assembly building for several hours Thursday.
Otherwise, it is a quiet holiday weekend for the OSIRIS-REx team. The next key event occurs Tuesday morning when the Launch Readiness Review is held.
"Spacecraft is healthy, Atlas 5 is ready, and team is in high spirits," mission leader Dante Lauretta tweeted on Saturday.
Название: OSIRIS-REx
Отправлено: Прол от 05.09.2016 01:23:21
ЦитатаSalo пишет:
File photo of Atlas 5. Credit: United Launch Alliance
Шикарное фото :) .
Название: OSIRIS-REx
Отправлено: azeast от 06.09.2016 22:34:08
https://ria.ru/science/20160906/1476252563.html

Зонд OSIRIS-REx пока не потерял возможности "обрести вторую жизнь" после сбора образцов пород с астероида Бенну, однако участники проекта пока не решили, куда он может отправиться, сообщили ученые на пресс-конференции в Центре космических полетов НАСА имени Кеннеди.
"Подобный вариант действительно существует. С другой стороны, у нас пока нет конкретных планов насчет того, что мы будем делать с OSIRIS-REx после завершения миссии, и зонд изначально будет отправлен на стабильную орбиту и будет вращаться вокруг Солнца", -- заявили участники миссии.
Американский "астероидный проект" OSIRIS-REx (Origins-Spectral Interpretation-Resource Identification-Security-Regolith Explorer) будет для США первой программой исследования астероида с помощью автоматического зонда. "Осирис" будет запущен в четверг, 8 сентября 2016 года и приблизится к астероиду Бенну (1999 RQ36) в 2020 году.
Название: OSIRIS-REx
Отправлено: Salo от 06.09.2016 23:27:22
Цитата (https://pbs.twimg.com/profile_images/639109886538727424/iqeT58Yk_bigger.jpg) Dante Lauretta ‏@DSLauretta  (https://twitter.com/DSLauretta)  19 мин.19 минут назад (https://twitter.com/DSLauretta/status/773250330003906561)  
Meanwhile, spacecraft successfully powered on, battery and other enable plugs installed, final thermal blankets complete. @OSIRISREx (https://twitter.com/OSIRISREx) ready!
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  2 ч.2 часа назад (https://twitter.com/jeff_foust/status/773227096747438080)  
Christina Richey, deputy program scientist: 75% of sample set aside for future, whether #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash) returns 60 grams or many times that.
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  2 ч.2 часа назад (https://twitter.com/jeff_foust/status/773226514770956289)  
Dworkin: don't do any more science once we collect the sample; it's all about keeping that precious sample safe. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  2 ч.2 часа назад (https://twitter.com/jeff_foust/status/773222598931017728)  
Jason Dworkin, NASA/GSFC: samples returned by #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash) will allow us to answer questions unanticipated at the time of launch.
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  2 ч.2 часа назад (https://twitter.com/jeff_foust/status/773220546880348160)  
Last panel: nearly all jackets and ties. This (science) panel: all matching #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash) polos.
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  3 ч.3 часа назад (https://twitter.com/jeff_foust/status/773217048113577985)  
Lauretta: sometimes, seeing the spacecraft prepared for launch, I had to pinch myself to convince myself I'm not dreaming. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  3 ч.3 часа назад (https://twitter.com/jeff_foust/status/773215615754575872)  
Dunn: assessment completed over weekend about any commonality btwn SLC-40 accident and this launch; determined no elevated risk. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  3 ч.3 часа назад (https://twitter.com/jeff_foust/status/773214464510484480)
Messer: did an extensive walk down of the pad after last week's SLC-40 incident; no damage or concerns found. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  3 ч.3 часа назад (https://twitter.com/jeff_foust/status/773213677516427264)  
Lauretta: "absolutely not nervous" about the launch, but am anxious since I've been working on this for 12 years. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  3 ч.3 часа назад (https://twitter.com/jeff_foust/status/773211994694545409)  
Flinn: 70% chance of acceptable weather of launch slips to Friday or Saturday. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  3 ч.3 часа назад (https://twitter.com/jeff_foust/status/773211595061202945)  
Clay Flinn, launch weather officer: 80% chance of acceptable weather for launch, cumulus clouds coming off the ocean key concern #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  3 ч.3 часа назад (https://twitter.com/jeff_foust/status/773209399691186176)  
Michael Donnelly, NASA #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash) program manager: 17 minutes after spacecraft separation should have stable communications established.
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  3 ч.3 часа назад (https://twitter.com/jeff_foust/status/773208820231340032)  
Scott Messer, ULA: #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash) has a 115-minute launch window, with launch opportunities every 5 minutes throughout.
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  3 ч.3 часа назад (https://twitter.com/jeff_foust/status/773207274865172483)  
Tim Dunn, NASA launch manager: launch campaign has been going well. Launch Readiness Review passed this morning. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  3 ч.3 часа назад (https://twitter.com/jeff_foust/status/773206127362400256)  
Lauretta: when starting #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash), thought the "resource identification" was really futuristic sci-fi. But now plans for asteroid mining.
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  3 ч.3 часа назад (https://twitter.com/jeff_foust/status/773205233103147008)  
Dante Lauretta: #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash) is an "awesome" acronym. "It's also my fault."
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  3 ч.3 часа назад (https://twitter.com/jeff_foust/status/773202466519277568)  
On NASA TV at 1pm EDT: an #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash) pre-launch briefing from NASA KSC, followed by a science briefing at 2: http://go.nasa.gov/2cxUrI2  (https://t.co/IoLRLbUstU)
Название: OSIRIS-REx
Отправлено: Salo от 07.09.2016 17:10:14
Цитата (https://pbs.twimg.com/profile_images/576901471574188032/7KTgtckm_bigger.jpeg) James Dean ‏@flatoday_jdean  (https://twitter.com/flatoday_jdean)  51 мин51 минуту назад (https://twitter.com/flatoday_jdean/status/773510292810719232)
Atlas V, @OSIRISREx (https://twitter.com/OSIRISREx) are rolling to LC41 pad for 7:05pm Thursday launch from Cape Canaveral AFS.
Название: OSIRIS-REx
Отправлено: Salo от 07.09.2016 17:14:57
Цитата (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 21 мин.21 минуту назад (https://twitter.com/jeff_foust/status/773518684350390273)
Pulling up to the pad. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 (https://pbs.twimg.com/media/CrwXJK5VUAAMrvQ.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 25 мин.25 минут назад (https://twitter.com/jeff_foust/status/773517636420440064)
Photographers at the press site distracted by a small crab. Don't think he's badged to cover the launch. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 (https://pbs.twimg.com/media/CrwWMJWW8AAxRTQ.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 37 мин.37 минут назад (https://twitter.com/jeff_foust/status/773514669201948672)
Halfway (maybe a bit more) to the pad. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 (https://pbs.twimg.com/media/CrwTfdoW8AYOfym.jpg)
 
 Jeff Foust ретвитнул(а) (https://twitter.com/jeff_foust)
  (https://pbs.twimg.com/profile_images/2819783284/ce6dae79cc0efdb46d48ad2ec3a2eca7_bigger.png) SpaceNews ‏@SpaceNews_Inc  (https://twitter.com/SpaceNews_Inc) 1 ч.1 час назад (https://twitter.com/SpaceNews_Inc/status/773507876946141184)
.@NASA (https://twitter.com/NASA)'s #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash) cleared for Thursday launch http://spacenews.com/osiris-rex-cleared-for-thursday-launch/ ... (https://t.co/sQPMiKHHxz)
 (https://pbs.twimg.com/media/CrwNO0qWgAABPXT.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 53 мин.53 минуты назад (https://twitter.com/jeff_foust/status/773510505608667136)
Atlas on the move to the pad. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 (https://pbs.twimg.com/media/CrwPtHPXgAAEgaU.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 1 ч.1 час назад (https://twitter.com/jeff_foust/status/773502538268209152)
Waiting for the Atlas 5 to roll from the building on the left to the pad on the right. #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 (https://pbs.twimg.com/media/CrwIdUbXgAAWJnM.jpg)
 
  (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust) 2 ч.2 часа назад (https://twitter.com/jeff_foust/status/773497392486383616)
Back at KSC this morning to see the Atlas 5 rollout to the pad for #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash) (which is just up the road from SLC-40...)
Название: OSIRIS-REx
Отправлено: Salo от 07.09.2016 17:17:57
Цитата (https://pbs.twimg.com/profile_images/563827857814605824/zvKDJUvj_bigger.jpeg) ULA ‏@ulalaunch  (https://twitter.com/ulalaunch)  56 мин.56 минут назад (https://twitter.com/ulalaunch/status/773511388534800384)  
There she rolls!! #AtlasV (https://twitter.com/hashtag/AtlasV?src=hash) with @OSIRISREx (https://twitter.com/OSIRISREx) rolls to the launch pad. #ToBennuAndBack (https://twitter.com/hashtag/ToBennuAndBack?src=hash)
 (https://pbs.twimg.com/media/CrwQf-tWIAEDYhe.jpg)
Название: OSIRIS-REx
Отправлено: che wi от 07.09.2016 18:38:53
Atlas V OSIRIS-REx Mission Profile (https://www.youtube.com/watch?v=P4-p9YtvRjo)

https://www.youtube.com/watch?v=P4-p9YtvRjo (https://www.youtube.com/watch?v=P4-p9YtvRjo)
Название: OSIRIS-REx
Отправлено: Salo от 07.09.2016 20:26:03
Цитата (https://pbs.twimg.com/profile_images/509029699322793984/zWjKFe63_bigger.jpeg) Jeff Foust ‏@jeff_foust  (https://twitter.com/jeff_foust)  1 ч1 час назад (https://twitter.com/jeff_foust/status/773554822243033089)  
Good look at the Atlas 5 on the pad at SLC-41 for tomorrow night's #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash) launch.
 (https://pbs.twimg.com/media/Crw4AeUXgAE5yFf.jpg)
Название: OSIRIS-REx
Отправлено: Salo от 07.09.2016 23:37:16
http://spaceflightnow.com/2016/09/07/photos-asteroid-bound-nasa-probe-encapsulated-mounted-atop-atlas-5-for-launch/
ЦитатаPhotos: Asteroid probe encapsulated, mounted atop Atlas 5 for launch
 September 7, 2016 (http://spaceflightnow.com/2016/09/) Justin Ray (http://spaceflightnow.com/author/justin-sfn-ray/)
 
Technicians inched the two halves of the Atlas 5's aluminum nose cone around NASA's OSIRIS-REx spacecraft to package the asteroid sample return probe, then moved the satellite to the rocket's assembly building and hoisted it aboard the two-stage booster during the final days of August for the Sept. 8 launch.
The United Launch Alliance rocket will provide the boost that the probe needs for its Earth departure, embarking on a two-year outbound leg to reach Asteroid Bennu in August 2018.
After orbiting a mere 5,000 feet above the asteroid's surface, then closing to 3,300 feet to map and survey Bennu for more than a year, the craft will perform a touch-and-go maneuver to capture up to four pounds of soil in July 2020. The specimen will be stowed in a decent capsule that lands in Utah on Sept. 24, 2023.
With no problems being worked on the OSIRIS-REx spacecraft or Atlas 5 launch vehicle, encapsulation was accomplished on Wednesday, Aug. 24 inside the Payload Hazardous Servicing Facility at NASA's Kennedy Space Center.
The payload fairing, measuring 14 feet in diameter and 39 feet long, shields the satellite during the climb through Earth's atmosphere. It will be jettisoned four minutes and 27 seconds into flight.
"It's the next major step in getting to the launch pad," said Dante Lauretta, OSIRIS-REx principal investigator with the University of Arizona.
"But I've come to really enjoy visiting the spacecraft and seeing it grow up. I mean literally, I was there when they were casting the composites for the decks and the core cylinder and saw it as a scattered bunch of pieces in the laboratory, which was the first time we had real hardware that wasn't just something on a PowerPoint chart.
On Friday, Aug. 26, the shrouded spacecraft was lifted aboard the transport trailer that would haul OSIRIS-REx to Cape Canaveral Air Force Station's Complex 41 and the doorway of Atlas 5's Vertical Integration Facility. That move and subsequent mating to the rocket occurred as planned on Monday, Aug. 29.
"It's a beautiful spacecraft, it really has behaved very well for us. So I'm happy to send it on the journey to Bennu and back, but I'm also going to miss just the awesome engineering that is the privilege of this position," Lauretta said.
Photo credit: NASA
(http://spaceflightnow.com/wp-content/uploads/2016/09/encap1-1024x683.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/09/encap1.jpg)
(http://spaceflightnow.com/wp-content/uploads/2016/09/encap2-683x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/09/encap2.jpg)
(http://spaceflightnow.com/wp-content/uploads/2016/09/encap3-1024x683.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/09/encap3.jpg)
(http://spaceflightnow.com/wp-content/uploads/2016/09/encap4-683x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/09/encap4.jpg)
(http://spaceflightnow.com/wp-content/uploads/2016/09/encap5-683x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/09/encap5.jpg)
(http://spaceflightnow.com/wp-content/uploads/2016/09/encap6-683x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/09/encap6.jpg)
(http://spaceflightnow.com/wp-content/uploads/2016/09/encap7-683x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/09/encap7.jpg)
(http://spaceflightnow.com/wp-content/uploads/2016/09/fairing01-1024x683.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/09/fairing01.jpg)
(http://spaceflightnow.com/wp-content/uploads/2016/09/fairing02-1024x683.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/09/fairing02.jpg)
(http://spaceflightnow.com/wp-content/uploads/2016/09/fairing03-683x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/09/fairing03.jpg)
(http://spaceflightnow.com/wp-content/uploads/2016/09/fairing04-683x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/09/fairing04.jpg)
(http://spaceflightnow.com/wp-content/uploads/2016/09/fairing05-683x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/09/fairing05.jpg)
(http://spaceflightnow.com/wp-content/uploads/2016/09/fairing06-683x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/09/fairing06.jpg)
(http://spaceflightnow.com/wp-content/uploads/2016/09/fairing07-683x1024.jpg) (http://spaceflightnow.com/wp-content/uploads/2016/09/fairing07.jpg)
Название: OSIRIS-REx
Отправлено: azeast от 08.09.2016 08:10:39
https://ria.ru/science/20160908/1476360857.html

Старт ракеты-носителя Atlas V 411 компании United Launch Alliance с космическим кораблем OSIRIS-Rex (Origins-Spectral Interpretation-Resource Identification-Security-Regolith Explorer) состоится в 19:05 по времени Восточного побережья США (02:05 мск 9 сентября) с космодрома на мысе Канаверал (штат Флорида). НАСА называет предстоящую миссию на астероид Бенну (1999 RQ36) "уникальной" и возлагает на нее большие надежды как в отношении научных данных, так и отработки технических возможностей для будущих полетов в космос. В США отмечают, что впервые американский космический корабль доставит на Землю образцы с поверхности астероида.
Название: OSIRIS-REx
Отправлено: Lanista от 08.09.2016 12:44:38
У Сергея не правильно?
8 сентября - OSIRIS-Rex - Atlas V 411 (AV-067) - Канаверал SLC-41 - 23:05-01:00
Название: OSIRIS-REx
Отправлено: тавот от 08.09.2016 13:01:21
ЦитатаLanista пишет:
У Сергея не правильно?
8 сентября - OSIRIS-Rex - Atlas V 411 (AV-067) - Канаверал SLC-41 - 23:05-01:00
UTC
Название: OSIRIS-REx
Отправлено: тавот от 08.09.2016 13:07:52
Однорукий Атлас как то стрёмновато смотрится.  Как будто Союз с одной боковушкой.  :(
Название: OSIRIS-REx
Отправлено: che wi от 08.09.2016 14:04:00
(https://testforum.novosti-kosmonavtiki.ru/forum/file/65298)
Название: OSIRIS-REx
Отправлено: тавот от 08.09.2016 18:35:11
Как погода во Флориде, каков прогноз на запуск ?
Название: OSIRIS-REx
Отправлено: azeast от 08.09.2016 19:48:42
Цитататавот пишет:
Как погода во Флориде, каков прогноз на запуск ?
На 19:42 мск прогноз не очень хороший:http://www.accuweather.com/ru/us/miami-fl/33128/weather-forecast/347936 (https://testforum.novosti-kosmonavtiki.ru/forum/file/65317)
Название: OSIRIS-REx
Отправлено: Андрей Суворов от 08.09.2016 20:08:54
Чё-то давно "Центавр" не отказывал :D
Название: OSIRIS-REx
Отправлено: тавот от 08.09.2016 20:46:58
ЦитатаАндрей Суворов пишет:
Чё-то давно "Центавр" не отказывал
Ну нафиг, Фалкона хватило.  :evil:
Название: OSIRIS-REx
Отправлено: Старый от 08.09.2016 20:51:23
ЦитатаАндрей Суворов пишет:
Чё-то давно "Центавр" не отказывал  :D
Да и РД-180 показывает какуюто подозрительную надёжность.  :D

Хотя конечно лучше уж с коммерческим или военным спутником. 
Название: OSIRIS-REx
Отправлено: тавот от 08.09.2016 20:51:36
По идее должны уже начать Атлас  готовить.
Название: OSIRIS-REx
Отправлено: Андрей Суворов от 08.09.2016 20:53:49
ЦитатаСтарый пишет:
ЦитатаАндрей Суворов пишет:
Чё-то давно "Центавр" не отказывал
Да и РД-180 показывает какуюто подозрительную надёжность.

Хотя конечно лучше уж с коммерческим или военным спутником.
Не, как раз, РД-180 в предыдущем полёте продемонстрировал своё гнилое нутро :D :D :D Так что совершенно точно очередь "Центавра".
Название: OSIRIS-REx
Отправлено: Димитър от 08.09.2016 21:30:37
Тыпун вам на язык!!!
Название: OSIRIS-REx
Отправлено: тавот от 08.09.2016 21:39:41
ЦитатаДимитър пишет:
Тыпун вам на язык!!!
И я о том же. Возвратных миссий раз два - и обчелся. Хаябуса чудом привёз миллиграммы, ФГ бесславно сдох, теперь и этот угробить ?   :evil:
Название: OSIRIS-REx
Отправлено: Старый от 08.09.2016 21:50:12
Цитататавот пишет:  теперь и этот угробить ?  :evil:
Лучше конечно... помучаться. 
(с) Тов. Сухов. :)
Название: OSIRIS-REx
Отправлено: knezevolk от 08.09.2016 23:14:00
Разогрев уже идет!  :)  

http://www.nasa.gov/multimedia/nasatv/#public

https://www.youtube.com/watch?v=UdmHHpAsMVw

Выводим изображение на домашний кинотеатр, покупаем хороший коньячок и готовимся хорошо провести вечер!  :)
Название: OSIRIS-REx
Отправлено: che wi от 08.09.2016 23:19:41
Цитатаknezevolk пишет:
готовимся хорошо провести вечер!
Жаль, завтра рано вставать, придётся пропустить трансляцию...
Пожелаю, конечно, чтобы запуск успешно состоялся.
Название: OSIRIS-REx
Отправлено: Salo от 08.09.2016 23:37:21
Цитатаknezevolk пишет:
и готовимся хорошо провести вечер! :)
Скорее ночь.
Название: OSIRIS-REx
Отправлено: opinion от 08.09.2016 23:38:13
На nasa tv в программе перепутаны что ли плюсы с минусами? Московскому времени соответствует GMT-3.
Название: OSIRIS-REx
Отправлено: Salo от 08.09.2016 23:39:48
GMT+3
Название: OSIRIS-REx
Отправлено: opinion от 08.09.2016 23:46:19
Насколько я понимаю, сейчас начался отсчет для static shot. А, это подготовка к пуску.

Выбран часовой пояс GMT-3. Написано начало в 11:30 p.m.. Трансляция запуска с 12:30 до 3:00. Если выбираю GMT+3, то получается какой-то бред.
Название: OSIRIS-REx
Отправлено: knezevolk от 09.09.2016 00:09:07
Судя по тому отсчету, что там сейчас идет, запуск будет в 1.50 по ДМВ, а не в 2.05, как раньше писали.
Название: OSIRIS-REx
Отправлено: opinion от 09.09.2016 00:34:28
Цитатаknezevolk пишет:
Судя по тому отсчету, что там сейчас идет, запуск будет в 1.50 по ДМВ, а не в 2.05, как раньше писали.
Написано 7:05 p.m. и диктор только что сказал. EDT = UTC-4, MSD = UTC+3. Поэтому пуск в 2:05 MSD.
Название: OSIRIS-REx
Отправлено: vogel от 09.09.2016 01:00:43
В отсчёте ведь задержка будет еще, как всегда. Hold которая. Поэтому таймер и "обманывает". :)
Название: OSIRIS-REx
Отправлено: knezevolk от 09.09.2016 02:12:50
Полетела!
С почином миссии!  :)

(http://i84.fastpic.ru/big/2016/0909/35/be69277af668a5c26c6cfceca7c7e435.jpg)
Название: OSIRIS-REx
Отправлено: Scua от 09.09.2016 02:19:11
Баллистическая пауза у Кентавра.
Название: OSIRIS-REx
Отправлено: opinion от 09.09.2016 02:21:29
Через 20 минут второе включение.
Название: OSIRIS-REx
Отправлено: uncle_jew от 09.09.2016 03:27:15
А это что? Заправочный пистолет на орбиту увезли?   :)  

(http://i.imgur.com/iqcKIV1.jpg)

(http://i.imgur.com/sEHbgCp.jpg)
Название: OSIRIS-REx
Отправлено: opinion от 09.09.2016 02:30:15
Уже поздравляют с успешным запуском. Рановато.
Название: OSIRIS-REx
Отправлено: Pirat5 от 09.09.2016 03:04:25
отделение КА!
Название: OSIRIS-REx
Отправлено: Прол от 09.09.2016 03:09:17
А вот теперь можно и поздравить НАСА с успешным началом миссии!
Название: OSIRIS-REx
Отправлено: opinion от 09.09.2016 03:12:46
Канберра получает телеметрию. Раскрытие солнечных батарей ожидается через 10 минут.
Название: OSIRIS-REx
Отправлено: Scua от 09.09.2016 03:15:21
Раскрылись.
Название: OSIRIS-REx
Отправлено: opinion от 09.09.2016 03:15:27
СБ раскрыты.
Название: OSIRIS-REx
Отправлено: Прол от 09.09.2016 03:17:49
Болден речь держит.
Название: OSIRIS-REx
Отправлено: Прол от 09.09.2016 03:25:35
Цитатаuncle_jew пишет:
А это что? Заправочный пистолет на орбиту увезли?  :)
Тенденция, однако :) .
Название: OSIRIS-REx
Отправлено: застрял на гсо от 09.09.2016 05:36:19
Цитатаuncle_jew пишет:
А это что? Заправочный пистолет на орбиту увезли?  :)  

 

Это дренажная труба.
Название: OSIRIS-REx
Отправлено: azeast от 09.09.2016 05:55:43
С успешным началом! Когда и если грунт привезут мне будет под 70((
Название: OSIRIS-REx
Отправлено: Floppy Disk от 09.09.2016 07:05:27
https://www.youtube.com/watch?v=D2df1EXa910 (https://www.youtube.com/watch?v=D2df1EXa910)
Название: OSIRIS-REx
Отправлено: Veganin от 09.09.2016 06:53:56
Цитатаazeast пишет:
С успешным началом! Когда и если грунт привезут мне будет под 70((
Забора грунта ждать относительно недолго. Нас ждет сравнение японских и американских инженерных решений. Еще и китайцы хотят грунт с астероида добыть. Там, глядишь и Индия подтянется с Южной Кореей.
Название: OSIRIS-REx
Отправлено: azeast от 09.09.2016 08:00:51
Да, AccuWeather с прогнозом промахнулись. 
http://tass.ru/kosmos/3607042

"Подготовка и сам пуск прошли строго по плану, этому способствовала почти идеальная погода. На небе была лишь легкая облачность."
Название: OSIRIS-REx
Отправлено: che wi от 09.09.2016 09:47:30
Присоединяюсь к поздравлениям, успеха миссии!
Название: OSIRIS-REx
Отправлено: Старый от 09.09.2016 10:05:45
ЦитатаVeganin пишет: 
Забора грунта ждать относительно недолго. Нас ждет сравнение японских и американских инженерных решений. Еще и китайцы хотят грунт с астероида добыть. Там, глядишь и Индия подтянется с Южной Кореей.
Потом Израиль. Потом Иран. 
 Мы - никогда. 
Название: OSIRIS-REx
Отправлено: Quооndo от 09.09.2016 10:51:39
ЦитатаСтарый пишет:
Потом Израиль. Потом Иран.
 Мы - никогда.
А еще потом Индонезия, Бразилия и другие. Россия и так много сделала в освоении космического пространства начиная с 1957 г. У нас есть величайшие достижения.
Название: OSIRIS-REx
Отправлено: Старый от 09.09.2016 10:57:51
ЦитатаQuооndo пишет:  Россия и так много сделала в освоении космического пространства начиная с 1957 г. 
То есть типа хватит? Пора на покой?
Название: OSIRIS-REx
Отправлено: тавот от 09.09.2016 11:08:49
ЦитатаСтарый пишет:
ЦитатаQuооndo пишет: Россия и так много сделала в освоении космического пространства начиная с 1957 г.
То есть типа хватит? Пора на покой?
Получается что да, - Луна-25 лишняя, было уже полвека назад. Сэкономленные деньги пустить на поддержание текущей ОГ. Хоть какая то отдача будет...
Название: OSIRIS-REx
Отправлено: Старый от 09.09.2016 11:19:52
Цитататавот пишет:
ЦитатаСтарый пишет:
ЦитатаQuооndo пишет: Россия и так много сделала в освоении космического пространства начиная с 1957 г.
То есть типа хватит? Пора на покой?
Получается что да, - Луна-25 лишняя, было уже полвека назад. Сэкономленные деньги пустить на поддержание текущей ОГ. Хоть какая то отдача будет...
Он говорит за всё освоение. Так что видать и ОГ тоже.
Однако офтопик. 

А Атлас и Центавр опять не порадовали нас ярким взрывом. :) 
Название: OSIRIS-REx
Отправлено: che wi от 09.09.2016 11:24:42
Atlas V OSIRIS-REx Rocket Cam (https://www.youtube.com/watch?v=IEdCAv-jXdw)

https://www.youtube.com/watch?v=IEdCAv-jXdw (https://www.youtube.com/watch?v=IEdCAv-jXdw)
Название: OSIRIS-REx
Отправлено: Старый от 09.09.2016 11:28:56
Блин! Атлас как и Союз стартует боком и только потом доварачивает на курс. Почему так?  :oops:
Название: OSIRIS-REx
Отправлено: тавот от 09.09.2016 12:00:39
Цитатаche wi пишет:
Atlas V OSIRIS-REx Rocket Cam (https://www.youtube.com/watch?v=IEdCAv-jXdw)



 
https://www.youtube.com/watch?v=IEdCAv-jXdw (https://www.youtube.com/watch?v=IEdCAv-jXdw)
После сброса створок ГО сразу отделяется Осирис. Он без Центавра, на собствнной тяге довыводился ?  :D
P.S. За видеомонтаж "пять" - практически бесшовная склейка.  8)
Название: OSIRIS-REx
Отправлено: Тангаж от 09.09.2016 12:04:09
ЦитатаQuооndo пишет:
Россия и так много сделала в освоении космического пространства начиная с 1957 г. У нас есть величайшие достижения.
Откуда только берутся такие вот лузерские мантры для самоуспокоения? Результат многолетней упорной работы путинских пропагандонов сказывается?
То, что СССР (который вы почему-то называете "Россией", наплевав на вклад граждан остальных членов Союза) действительно когда-то давно сделал множество великих достижений в освоении космоса, повод отнюдь не для того, чтобы почивать на лаврах и мокрываться мхом, наоборот - стремиться дальше и набирать обороты. США, которые за всё прошедшее время в освоении космоса и особенно в научных межпланетных миссиях сделали, может быть, больше всех остальных страны вместе взятых, не сидят на месте, довольствуясь мастурбацией (пардон за пошлость) на свои прошлые достижения.
Если бы вся эта кремлевская шушера не занималась растаскиванием миллиардов нефтедолларов по своим заграничным кубышкам, только на словах радея за будущее своей страны, уже давно имели бы достаточное количество работающих собственных космодромов, качественную инфраструктуру, обширную программу научных миссий, свой супертяж и пилотирумые полеты чуть подальше околоземной орбиты. Однако увы, способны лишь строить воздушные замки и надеяться, что какие-нибудь европейцы возьмут прицепом в "Экзомарс".
Название: OSIRIS-REx
Отправлено: opinion от 09.09.2016 12:04:31
Цитатаche wi пишет:
Atlas V OSIRIS-REx Rocket Cam (https://www.youtube.com/watch?v=IEdCAv-jXdw)

Сброса обтекателя и отделения спутника в прямом эфире не было. Цензоры отсматривали? Видимо, вместе с двигателями передалась какая-то зараза.
Название: OSIRIS-REx
Отправлено: тавот от 09.09.2016 12:06:50
А какой будет следующая, четвёртая миссия по программе New Frontiers ?  Вроде как был разговор за луны Юпитера ?
Название: OSIRIS-REx
Отправлено: Salo от 09.09.2016 12:09:57
Цитата (https://pbs.twimg.com/profile_images/750783409383931904/ligmbG8P_bigger.jpg) Craig Bailey ‏@cbphoto1  (https://twitter.com/cbphoto1)  7 ч7 часов назад (https://twitter.com/cbphoto1/status/774066716527759360)  
Beautiful photos from today's #AtlasV (https://twitter.com/hashtag/AtlasV?src=hash) launch! http://on.flatoday.com/2c2ir4c  (https://t.co/pZKBMrdNtj) @ulalaunch (https://twitter.com/ulalaunch) @NASASocial (https://twitter.com/NASASocial) #KSC (https://twitter.com/hashtag/KSC?src=hash) #OSIRISREx (https://twitter.com/hashtag/OSIRISREx?src=hash)
 (https://pbs.twimg.com/media/Cr4JRWtUAAA4e9X.jpg)
Название: OSIRIS-REx
Отправлено: тавот от 09.09.2016 12:10:00
Цитатаopinion пишет:
Сброса обтекателя и отделения спутника в прямом эфире не было. Цензоры отсматривали? Видимо, вместе с двигателями передалась какая-то зараза.
Берут пример с Маска. У него посадки никогда сразу не показывают - за несколько секунд до касания "пропадает" сигнал.
Название: OSIRIS-REx
Отправлено: Scua от 09.09.2016 12:19:34
Цитататавот пишет:
А какой будет следующая, четвёртая миссия по программе New Frontiers ? Вроде как был разговор за луны Юпитера ?
   В ноябре 2017 г выберут 2-3 проекта для более подробной разработки, окончательный выбор 1 из этих 2-3 сделают в 2019 г, старт - в 2020-х.
Название: OSIRIS-REx
Отправлено: Salo от 09.09.2016 13:10:17
https://ria.ru/space/20160909/1476472366.html
ЦитатаЗонд OSIRIS-Rex начал семилетний полет за образцами породы астероида Бенну
08:26 09.09.2016

ВАШИНГТОН, 9 сен -- РИА Новости. Ракета Atlas V успешно вывела в космос зонд OSIRIS-Rex (Origins-Spectral Interpretation-Resource Identification-Security-Regolith Explorer) для взятия образцов породы с поверхности астероида Бенну. На Землю грунт будет доставлен не раньше 2023 года.
Ракета Atlas V, принадлежащая корпорации United Launch Alliance, стартовала с космодрома на мысе Канаверал (штат Флорида) в 02.05 мск в пятницу. За стартом миссии, которая стала первым путешествием американского космического корабля за образцами породы к астероиду, со смотровой площадки на мысе Канаверал наблюдали более 8 тысяч человек.
Запуск обошелся без происшествий и был встречен овацией. "Все идет в штатном режиме, все по графику", -- сказал ведущий трансляции НАСА после отделения первой ступени ракеты.
Второй раунд оваций раздался из ЦУП, когда через 59 минут после старта космический корабль отделился от ракеты-носителя и вышел на орбиту, с которой он начнет свой полет к Бенну.
"OSIRIS-Rex достиг скорости, на которой он покидает Землю, он летит сам в семилетнюю миссию по взятию образцов с астероида", -- сообщил ведущий трансляции после подтверждения отделения корабля от ракеты.
"Потрясающий день, прекрасный запуск", -- заявил директор запуска Тим Данн, отметив, что все происходило в штатном режиме.
По расчетам НАСА, аппарат достигнет астероида в 2018 году, еще через два-три года он совершит беспосадочный забор образцов породы с поверхности астероида. Их доставка на Землю в специальной капсуле намечена на сентябрь 2023 года.
НАСА называет миссию на астероид Бенну (1999 RQ36) уникальной и возлагает на нее большие надежды как в отношении научных данных, так и отработки технических возможностей для будущих полетов в космос. Ожидается, что собранные с поверхности астероида материалы помогут ответить на многие вопросы о формировании Солнечной системы и появлении жизни на Земле.
Зонд не будет опускаться на поверхность Бенну, вместо этого он ненадолго опустит на него трехметровую выдвижную "руку" TAGSAM (Touch-and-Go Sample Acquisition Mechanism), которая втянет в специальную капсулу частицы материала с поверхности космического тела. Их планируется поднять с поверхности с помощью сжатого газа.
Аппарату предстоит взять по меньшей мере 60 граммов материала с поверхности астероида, их разделят между собой США, Канада и Япония. Часть полученных образцов будет законсервирована для будущих исследований. Судьба OSIRIS-Rex по завершении миссии пока не известна, но не исключено, что он продолжит свою работу в космосе.
Название: OSIRIS-REx
Отправлено: Quооndo от 09.09.2016 23:09:13
ЦитатаТангаж пишет:
Однако увы, способны лишь строить воздушные замки и надеяться, что какие-нибудь европейцы возьмут прицепом в "Экзомарс".
У нас Луны на подходе, а провалы в АМС мы компенсируем пилотажкой на МКС. В отличие от ЕКА НАСА и JAXA мы каждый год 4 раз отправляем пилотируемые КА к МКС и еще 4 раза отправляем самый массовый в истории транспортник туда же. Кроме того, разрабатываем новую модификацию транспортника и готовим новые модули к МКС. Так что нехватку дальних полетов компенсируем пилотируемыми полетами, разведывательными спутниками и огромным количествам запусков РН. У Р-7 почти 1900 пусков и еще 600 у Протона. Даже близко никто к этом показателям не приблизился. НАСА мастурбирует на новые пилотируемые корабли которые уже 4-ый год не могут полететь к МКС а между тем мы исправно таскаем уже 6-ой год их астронавтов на станцию. И так во всем. Так что не стоит так переживать. Всему свое время а их достижения в освоении солнечной системы компенсируем пилотируемыми полетами.
Название: OSIRIS-REx
Отправлено: Quооndo от 09.09.2016 23:17:58
Да, ну и я бы добавил что Атласы летают на наших движках, а они вывели добрую половину всех исследовательских АМС в последние два десятилетия. Эти АМС, запущенные на Атласах, принесли возможно больше научных результатов чем все остальные АМС вместе взятые летавших до 1990-х, начиная с 1957 г.
Название: OSIRIS-REx
Отправлено: SashaBad от 10.09.2016 11:52:28
Цитатаopinion пишет:
Цитатаche wi пишет:
 Atlas V OSIRIS-REx Rocket Cam (https://www.youtube.com/watch?v=IEdCAv-jXdw)

Сброса обтекателя и отделения спутника в прямом эфире не было. Цензоры отсматривали? Видимо, вместе с двигателями передалась какая-то зараза.
Вы репортаж о запуске в прямом эфире смотрели?
Сразу после разделения ступеней видно пролетающие створки обтекателя.
Здесь https://www.youtube.com/watch?v=37IcKzRsqOo они попадают в кадр на 37:16
Название: OSIRIS-REx
Отправлено: тавот от 10.09.2016 15:08:49
ЦитатаSashaBad пишет:
Вы репортаж о запуске в прямом эфире смотрели?
Сразу после разделения ступеней видно пролетающие створки обтекателя.
Здесь https://www.youtube.com/watch?v=37IcKzRsqOo они попадают в кадр на 37:16
Это была другая камера, направленная вниз. Сейчас говорим о камере в отсеке ПН. Действительно, с неё ничего в прямом эфире не было. Кстати, с камеры на Центавре показали обалденный восход Солнца. ИМХО в первый раз.
Название: OSIRIS-REx
Отправлено: che wi от 12.09.2016 15:46:03
(https://testforum.novosti-kosmonavtiki.ru/forum/file/65392)
Название: OSIRIS-REx
Отправлено: тавот от 12.09.2016 16:27:22
Цитатаche wi пишет:

На патчике ещё старый вариант Осириса, с незагнутыми вверх СБ.
Название: OSIRIS-REx
Отправлено: instml от 12.09.2016 21:14:46
Цитататавот пишет:
Цитатаche wi пишет:

На патчике ещё старый вариант Осириса, с незагнутыми вверх СБ.
Он может махать СБ по собственному желанию.
Название: OSIRIS-REx
Отправлено: Floppy Disk от 13.09.2016 10:46:48
https://www.youtube.com/watch?v=DW9-nDrydoQ (https://www.youtube.com/watch?v=DW9-nDrydoQ)
Название: OSIRIS-REx
Отправлено: Имxотеп от 03.10.2016 20:19:08
С 19 по 26 сентября прошли (http://www.asteroidmission.org/?latest-news=nasas-asteroid-bound-spacecraft-aces-instrument-check) первые проверки научного оборудования OSIRIS-REx: блока камер OCAMS, лазерного альтиметра OLA, спектрометров OVIRS, OTES и REXIS, а также одной из камер системы забора проб TAGSAM, которая должна контролировать процесс перегрузки реголита в возвращаемую капсулу. Собственно вот так эта капсула выглядит сейчас:

(http://planetary.s3.amazonaws.com/assets/images/spacecraft/2016/20160929_StowCam_22September2016_f840.jpg)

А вот схема наблюдения за капсулой:

(http://planetary.s3.amazonaws.com/assets/images/spacecraft/2016/20160929_tagcams_locations.jpg)
Название: OSIRIS-REx
Отправлено: instml от 04.01.2017 12:26:03
NASA's first mission to return a sample of an asteroid to Earth will be multitasking during its two-year outbound cruise to the asteroid Bennu. On Feb. 9-20, the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security- Regolith Explorer) spacecraft will activate its onboard camera suite and commence a search for elusive "Trojan" asteroids.

Trojans are asteroids that are constant companions to planets in our solar system as they orbit the sun, remaining near a stable point 60 degrees in front of or behind the planet. Because they constantly lead or follow in the same orbit, they will never collide with their companion planet.


There are six planets in our solar system with known Trojan asteroids--Jupiter, Neptune, Mars, Venus, Uranus and, yes, even Earth. The Earth Trojan is elusive; to date, scientists have only discovered one Earth trojan asteroid -- 2010 TK7  -- found by NASA's NEOWISE project in 2010. Yet there are more than 6,000 known Trojans that are co-orbiting the sun with the gas giant Jupiter.

Scientists predict that there should be more Trojans sharing Earth's orbit, but these asteroids are difficult to detect fr om Earth because they appear close to the sun from Earth's point of view. In mid-February 2017, however, the OSIRIS-REx spacecraft will be positioned in an ideal spot to undertake a survey.

Over 12 days, the OSIRIS-REx Earth-Trojan asteroid search will employ the spacecraft's MapCam imager to methodically scan the space wh ere Earth Trojans are expected to exist.  Many of these observations will closely resemble MapCam's planned activities during its upcoming search for satellites of asteroid Bennu, so the Trojan asteroid search serves as an early rehearsal for the mission's primary science operations.

"The Earth-Trojan asteroid search provides a substantial advantage to the OSIRIS-REx mission," said OSIRIS-REx Principal Investigator Dante Lauretta of the University of Arizona, Tucson. "Not only do we have the opportunity to discover new members of an asteroid class, but more importantly, we are practicing critical mission operations in advance of our arrival at Bennu, which ultimately reduces mission risk."

https://www.nasa.gov/feature/goddard/2016/nasa-mission-to-search-for-rare-asteroids/
Название: OSIRIS-REx
Отправлено: instml от 04.01.2017 12:28:19
OSIRIS-REx попытается найти редкие астероиды

В рамках экспедиции по возврату образца астероида Nasa будет использовать зонд OSIRIS-REx, чтобы решить многие задачи во время двухлетнего дальнего круиза. Уже 9-20 февраля космический аппарат активирует свою бортовую камеру и начнет поиск неуловимых «троянских» астероидов.

Троянские астероиды являются спутниками планет в Солнечной системе, они вращаются вокруг Солнца, оставаясь постоянно в 60 градусах впереди или позади планеты. Поскольку они постоянно находятся на одной орбите, они никогда не могут столкнуться со своей сопутствующей планетой. Есть шесть планет в Солнечной системе, где обнаружены троянские астероиды: Юпитер, Нептун, Марс, Венера, Уран и, да, даже Земля!

Основные почти 6000 известных троянов совместно вращаются вокруг Солнца с газовым гигантом Юпитером. Троянцы Земли пока неуловимы; на сегодняшний день обнаружен всего лишь единственный объект - 2010 ТК7 - в 2010 году. Ученые считают, что их должно быть значительно больше. Почему же их не удается обнаружить с Земли? Потому что они располагаются очень близко к Солнцу с точки зрения Земли.

В середине следующего февраля зонд будет направлен в идеальное место для наблюдений, которые продлятся 12 дней. Для поисков зонд задействует камеру MapCam (способна видеть в четырех спектральных диапазонах) для просмотра космического пространства, где, как ожидается, находятся троянцы Земли.

Данное исследование позволит подготовить MapCam для запланированных мероприятий во время предстоящего поиска спутников астероида Bennu, по сути, поиск троянцев служит ранней репетицией перед ее основной научной работой.

http://24space.ru/1699-osiris-rex-popytaetsya-nayti-redkie-asteroidy.html
Название: OSIRIS-REx
Отправлено: instml от 04.01.2017 12:29:17
http://www.asteroidmission.org/?latest-news=spacecraft-update-dsm-1
Название: OSIRIS-REx
Отправлено: instml от 04.01.2017 12:31:19
Пролет Земли 23 сентября 2017 над Антарктидой на высоте около 17 тыс. км.

Кампания по наблюдению Земли и Луны 22 сент - 7 окт 2017
Название: OSIRIS-REx
Отправлено: instml от 16.01.2017 00:32:26
http://www.lpi.usra.edu/sbag/meetings/jan2017/presentations/Lauretta.pdf
Название: OSIRIS-REx
Отправлено: Salo от 19.01.2017 06:33:32
https://ria.ru/science/20170118/1485974321.html
ЦитатаЗонд НАСА совершил первый маневр на пути к "астероиду апокалипсиса"
17:03 18.01.2017
(https://cdn3.img.ria.ru/images/148598/84/1485988453.jpg)
© NASA/ NASA's Goddard Space Flight Center/Conceptual Image Lab (http://www.nasa.gov)

МОСКВА, 18 янв - РИА Новости. Зонд OSIRIS-REx успешно совершил первый маневр в глубоком космосе, который вывел его на траекторию сближения с Землей для дальнейшего разгона на пути к астероиду-"убийце" Бенну, сообщает НАСА.
"Маневр DSM-1 важен по той причине, что мы впервые сильно изменили траекторию полета зонда и впервые включили его главный двигатель. Приятно, что этот важный этап в нашем путешествии к Бенну успешно завершился, и мы продолжаем полет к астероиду", -- заявила Арлин Бартельс (Arlin Bartels) из Центра космических полетов имени Годдарда.
Зонд OSIRIS-REx успешно вывели на околоземную орбиту в минувшем сентябре. Цель миссии - сближение и забор грунта с поверхности астероида Бенну (1999 RQ36). По текущим планам НАСА, зонд сблизится с астероидом в 2018 году, заберет грунт в 2019 году и запустит капсулу как минимум с 60 граммами астероидной материи в направлении Земли. Приземлиться она должна на территории штата Юта в конце сентября 2023 года.
OSIRIS-REx для экономии топлива будет лететь к Бенну не по прямой траектории, а совершит "турне" по окрестностям Земли, почти вернувшись назад предстоящей осенью. Совершив "петлю", зонд пролетит на расстоянии 20 тысяч километров от поверхности планеты, чтобы использовать силу ее притяжения для разгона и выхода на траекторию сближения с астероидом.
По такому же принципу действует праща, разгоняя и выпуская камень.
Первый орбитальный маневр, или DSM-1, был проведен в канун Нового года, 28 декабря, после чего скорость зонда выросла на полторы тысячи километров в час. Ради этого аппарат сжег 350 килограммов топлива. Данные об успешном завершении маневра были переданы на Землю только недавно. Теперь НАСА планирует провести еще одну небольшую коррекцию орбиты для максимально тесного сближения зонда с Землей во время гравитационного разгона.
Ближайшие два года полета к Бенну зонд не проведет впустую. Уже в феврале он включит свои камеры и часть научных инструментов для поиска так называемых "троянских" астероидов - квазиспутников Земли, движущихся по ее орбите чуть впереди или чуть позади планеты в тех точках, где гравитация Солнца и Земли уравновешивается. Кроме того, ученые и инженеры миссии будут отрабатывать сценарии сближения OSIRIS-REx с астероидом и поиска оптимальной точки для забора грунта с его поверхности.
Астероид Бенну (Bennu) диаметром около 500 метров открыли в 2013 году. Согласно ряду расчетов, он может столкнуться с Землей в 2169 или 2199 году.
Название: OSIRIS-REx
Отправлено: Salo от 02.02.2017 15:45:14
http://spaceflightnow.com/2017/02/01/nasas-osiris-rex-probe-moonlights-as-asteroid-sleuth/
ЦитатаNASA's OSIRIS-REx probe moonlights as asteroid sleuth             
 February 1, 2017 (http://spaceflightnow.com/2017/02/) Stephen Clark (http://spaceflightnow.com/author/stephen-clark/)
 (http://spaceflightnow.com/wp-content/uploads/2017/02/trojan_asteroid_search_1.png) (http://spaceflightnow.com/wp-content/uploads/2017/02/trojan_asteroid_search_1.png)
The OSIRIS-REx spacecraft will undertake a search for Earth-Trojan asteroids while on its outbound journey to the asteroid Bennu. Earth Trojans are asteroids that share an orbit with Earth while remaining near a stable point 60 degrees in front of or behind the planet. Credit: University of Arizona/Heather Roper

On course to collect specimens fr om asteroid Bennu after its launch last year, NASA's OSIRIS-REx spacecraft will search this month for objects sharing an orbit with Earth, a bonus science opportunity to locate possible fragments of the primordial building blocks that formed our home planet.
The long-range observations begin Feb. 9 and run through Feb. 20, using one of the probe's cameras to look for asteroids embedded in swarms scientists believe lurk ahead of and behind Earth in its orbit around the sun.
Named Earth-Trojans, the objects likely group in clouds at Sun-Earth Lagrange points, where the combined pull of gravity fr om the bodies would allow asteroids to orbit in lock-step with Earth. The so-called L4 and L5 Lagrange points lead and follow Earth by 60 degrees in its path around the sun.
The same positions in front of and behind Jupiter harbor thousands of Trojan asteroids, and smaller Trojan swarms have been discovered near Venus, Mars, Uranus and Neptune.
It turns out OSIRIS-REx is about to pass through the Sun-Earth L4 Lagrange point, and managers decided to scan the region where Earth-Trojans might be located to see what the spacecraft can find.
Now located nearly 74 million miles (119 million kilometers) from Earth, OSIRIS-REx is on a seven year-journey to asteroid Bennu and back, charged with gathering rock samples from the mountain-sized object and delivering them to scientists for examination inside laboratories on the ground.
Since its launch Sept. 8, 2016, OSIRIS-REx has switched on all of its science instruments and performed a major course correction maneuver to aim for a flyby of Earth this Sept. 22. Earth's gravity will slingshot the spacecraft toward Bennu.
The Dec. 28 burn changed OSIRIS-REx's speed by 964 mph (431 meters per second) and consumed a quarter of the probe's propellant supply. The maneuver was the largest of the mission until the Lockheed Martin-built spacecraft's arrival burn at Bennu in August 2018.
 (http://spaceflightnow.com/wp-content/uploads/2017/02/dsm-139.png) (http://spaceflightnow.com/wp-content/uploads/2017/02/dsm-139.png)
Artist's concept of the OSIRIS-REx spacecraft's deep space maneuver. Credit: NASA

Another small "clean-up" thruster firing Jan. 18 further tweaked OSIRIS-REx's trajectory, and the spacecraft switched over to its high-power antenna Jan. 25 to beam data back to Earth at faster rates.
The milestones clear the way for the mission's first science campaign next week.
"The Earth-Trojan asteroid search provides a substantial advantage to the OSIRIS-REx mission," said Dante Lauretta, OSIRIS-REx principal investigator from the University of Arizona in Tucson. "Not only do we have the opportunity to discover new members of an asteroid class, but more importantly, we are practicing critical mission operations in advance of our arrival at Bennu, which ultimately reduces mission risk."
Only one of the elusive Earth-Trojans has been detected to date.
Astronomers using NASA's WISE infrared telescope confirmed the discovery of an asteroid in 2011 that fit the definition of an Earth-Trojan. Asteroid 2010 TK7 is about 1,000 feet (300 meters) in diameter, and experts predict its extreme orbit, which takes it far above and below the plane of the planets, will be stable for at least the next several thousand years.
Scientists consider 2010 TK7 an outlier of a large group of asteroids sharing Earth's orbit, some of which may have been there since the solar system formed more than 4.5 billion years ago.
"The orbital motion of 2010 TK7 is chaotic and unstable on billion-year timescales, and it is unlikely to be a remnant from the formation of the Earth," Lauretta wrote in a blog post describing the upcoming observing campaign. "The existence and size of a primordial population of Earth-Trojans (genuine remnants of the building blocks of our planet) are not well constrained and represents a significant gap in our inventory of small bodies in near-Earth space."
Earth-Trojans are difficult to find from the ground because they are usually in daylight, and the WISE spacecraft orbiting Earth detected 2010 TK7 because its unique orbit oscillates farther from the sun's position in the sky than most members of the group.
Current ground-based surveys are only sensitive to Earth-Trojan asteroids bigger than about 3,000 feet, or approximately 1 kilometer, said Carl Hergenrother, an OSIRIS-REx staff scientist at the University of Arizona.
 (http://spaceflightnow.com/wp-content/uploads/2017/02/575352main_pia14404b-43_946-710.jpg) (http://spaceflightnow.com/wp-content/uploads/2017/02/575352main_pia14404b-43_946-710.jpg)
This artist's concept illustrates the first known Earth-Trojan asteroid, discovered by NEOWISE, the asteroid-hunting portion of NASA's WISE mission. The asteroid is shown in gray and its extreme orbit is shown in green. Earth's orbit around the sun is indicated by blue dots. The objects are not drawn to scale. Credit: Paul Wiegert, University of Western Ontario, Canada

By mid-February, OSIRIS-REx will be "an ideal spot to undertake a survey," Lauretta wrote.
Between Feb. 9 and Feb. 20, the spacecraft's mapping camera will take 145 pictures per day of the volume of space wh ere Earth-Trojans are expected to reside, according to Lauretta.
"It's a big cloud, and there should be material there," Hergenrother said at a Jan. 12 meeting of NASA's Small Bodies Assessment Group. "We should be able to detect stuff down to 100 meters (330 feet), and possibly even smaller, depending on the performance of our cameas, and the albedo (reflectivity).
"If we don't find anything, it either means there's a lot less objects out there than we were thinking, or they're a lot smaller," Hergenrother said.
While Lauretta said there is a scientific motivation for the Earth-Trojan search, the top reason for the campaign is to practice techniques the OSIRIS-REx science team plans to employ once the spacecraft arrives at Bennu.
On approach to Bennu, the probe's cameras will look near the asteroid to hunt for tiny miniature moons as small as 4 inches (10 centimeters). Navigators want to know the location of any debris around Bennu to prevent a crash with the spacecraft.
Jupiter and several large distant asteroids will be imaged by OSIRIS-REx's camera when it scans for Earth-Trojans. The images will help the ground team rehearse the complex real-time in-space navigation the mission requires during the rendezvous with Bennu, along with the identification of moving targets mimicking the behavior of potential mini-moons surrounding the asteroid.
Although the scientific objectives are secondary, Lauretta said his team is excited about the prospect of making a discovery so early in the mission.
"We'll clearly be able to set an upper lim it on what's out there because we know what we could detect if it was there," Lauretta said at the Jan. 12 science meeting.
OSIRIS-REx could also discover an asteroid from another family that just happens to pass through the camera's field-of-view, Lauretta said. But scientists will pin down the orbit of any object OSIRIS-REx detects, and an Earth-Trojan asteroid locked in a stable orbit could be evidence of a larger cloud of mini-worlds hidden from view.
"Is this dynamically stable? Could it be a primordial Earth object?" Lauretta asked, posing questions scientists will have if OSIRIS-REx finds anything starting next week. "That would be the most fascinating thing that we could discover."
Название: OSIRIS-REx
Отправлено: che wi от 06.04.2017 10:53:07
Цитата OSIRIS-REx‏ (https://twitter.com/OSIRISREx) · Apr 4 (https://twitter.com/OSIRISREx/status/849047418410872833)

At my current distance, it takes just under 7 minutes for me to talk to Earth
(https://testforum.novosti-kosmonavtiki.ru/forum/file/69886)
Название: OSIRIS-REx
Отправлено: che wi от 14.06.2017 21:47:40
ЦитатаNASA's OSIRIS-REx@OSIRISREx (https://twitter.com/OSIRISREx) · 35 minutes ago (https://twitter.com/OSIRISREx/status/875052784969818112)

Only 100 days until my #EarthGravityAssist (https://twitter.com/hashtag/EarthGravityAssist?src=hash) -- when I'll borrow some of Earth's orbital energy to slingshot onto Bennu's orbital plane.
(https://testforum.novosti-kosmonavtiki.ru/forum/file/71857)
Название: OSIRIS-REx
Отправлено: Имxотеп от 17.06.2017 21:30:29
Троянцы Земли не найдены

В феврале OSIRIS-REX прошел через точку L4 системы Солнца-Земля и использовал эту возможность для непосредственного поиска астероидов-троянцев с помощью камеры MapCam. Она может видеть объекты до 14 звездной величины, то есть способна обнаружить астероид размером 200-400 м с расстояния 0.04 а.е. или астероид размером около 100 м с расстояния 0.01 а.е. Для сравнения: земные обзоры PanSTARRS или Catalina могут увидеть в точке L4 астероиды диаметром не менее полукилометра.

(http://f22.ifotki.info/org/8cc92d3ca4f7783bae0968f9107df0472e49cd280382991.jpg)

Было сделано 1350 снимков 90 полей и найдено 0 троянцев, 17 известных астероидов главного пояса и 1 известная планета (Юпитер).

http://www.lpi.usra.edu/sbag/meetings/jun2017/presentations/Lim.pdf
Название: OSIRIS-REx
Отправлено: instml от 23.08.2017 22:45:10
Пролет Земли через 1 месяц!
Название: OSIRIS-REx
Отправлено: instml от 26.08.2017 23:16:46
NASA'S ASTEROID SAMPLE RETURN MISSION SUCCESSFULLY ADJUSTS COURSE

August 25, 2017

NASA's OSIRIS-REx spacecraft fired its thrusters to position itself on the correct course for its upcoming Earth flyby. The spacecraft, which is on a two-year outbound journey to asteroid Bennu, successfully performed a precision course adjustment on Wednesday to prepare for the gravity slingshot on Sept. 22.

This trajectory correction maneuver was the first to use the spacecraft's Attitude Control System, or ACS, thrusters in a turn-burn-turn sequence. In this type of sequence, OSIRIS-REx's momentum wheels turn the spacecraft to point the ACS thrusters toward the desired direction for the burn, and the thrusters fire. After the burn, the momentum wheels turn the spacecraft back to its previous orientation. The total thrust is monitored by an on-board accelerometer that will stop the maneuver once the desired thrust is achieved.

High-precision changes in velocity, or speed and direction, will be critical when the OSIRIS-REx spacecraft operates near Bennu. Because Bennu is so small, it has only a weak gravity field. Therefore, it will only require tiny changes in velocity to do many of the maneuvers that are planned to explore and map the asteroid.

The Aug. 23 maneuver began at 1 p.m. EDT and lasted for approximately one minute and 17 seconds. Preliminary tracking data indicate that the maneuver was successful, changing the velocity of the spacecraft by 1.07 miles per hour (47.9 centimeters per second) and using approximately 16 ounces (0.46 kilogram) of fuel.

OSIRIS-REx will fly by Earth on Sept. 22 to use our planet's gravity to propel the spacecraft onto Bennu's orbital plane. As of Friday, Aug. 25, the spacecraft is about 10.3 million miles (16.6 million kilometers) from Earth.

The mission team has another minor Earth-targeting maneuver tentatively planned for Sept. 12. Over the next few weeks, the navigation team will process daily spacecraft tracking data from Wednesday's maneuver to determine whether the additional maneuver is necessary before the Earth gravity assist.

https://www.asteroidmission.org/?latest-news=nasas-asteroid-sample-return-mission-successfully-adjusts-course
Название: OSIRIS-REx
Отправлено: Pirat5 от 21.09.2017 09:37:41
немного больше суток осталось:
Цитата22.09.2017 o 16:52 w odległości ok. 16000 km od Ziemi przeleci sonda OSIRIS-REx (http://lk.astronautilus.pl/sondy/osiris.htm), wykonując manewr grawitacyjny w drodze do planetki (101955) Bennu.
http://lk.astronautilus.pl/plan.htm
16:52 GMT = 19:52 мск
Название: OSIRIS-REx
Отправлено: che wi от 22.09.2017 07:14:20
ScienceCasts: Riding the Slingshot to Bennu (https://www.youtube.com/watch?v=B5suKnZxCpI)

https://www.youtube.com/watch?v=B5suKnZxCpI (https://www.youtube.com/watch?v=B5suKnZxCpI)
Название: OSIRIS-REx
Отправлено: tnt22 от 22.09.2017 18:50:16
ЦитатаA Slingshot from Earth to Asteroid Bennu
 
(https://yt3.ggpht.com/-vGqWm2uoUYg/AAAAAAAAAAI/AAAAAAAAAAA/o8NkoXEnQV4/s88-c-k-no-mo-rj-c0xffffff/photo.jpg) (https://www.youtube.com/user/NASAexplorer) NASA Goddard (https://www.youtube.com/channel/UCAY-SMFNfynqz1bdoaV8BeQ)

Опубликовано: 22 сент. 2017 г.

OSIRIS-REx is NASA's mission to explore near-earth asteroid Bennu, collect a sample, and return it to Earth. To get to Bennu, however, OSIRIS-REx must first leave the plane of Earth's orbit and match the orbital tilt of its target. On September 22, 2017, OSIRIS-REx will approach Earth and fly over its southern hemisphere, passing within 11,000 miles of Antarctica. This gravitational slingshot will bend its trajectory by six degrees, sending the spacecraft on a path to intercept Bennu. Shortly after the flyby, OSIRIS-REx will look back at Earth and take images and spectra, ensuring that its instruments are ready for arrival at Bennu in 2018.
https://www.youtube.com/watch?v=svq4-Kf4K2Ehttps://www.youtube.com/watch?v=svq4-Kf4K2E (https://www.youtube.com/watch?v=svq4-Kf4K2E) (1:35)
Название: OSIRIS-REx
Отправлено: tnt22 от 22.09.2017 18:58:23
https://spaceflightnow.com/2017/09/22/osiris-rex-earth-gravity-assist/
ЦитатаOSIRIS-REx asteroid mission heads for Earth flyby
September 22, 2017 (https://spaceflightnow.com/2017/09/) Stephen Clark (https://spaceflightnow.com/author/stephen-clark/)

NASA's OSIRIS-REx spacecraft, en route to asteroid Bennu to retrieve samples and return them to scientists, will slingshot past Earth on Friday, using gravity to change its trajectory for a rendezvous with its target late next year.

One year since it launched fr om Cape Canaveral aboard an Atlas 5 rocket, OSIRIS-REx will return to Earth on Friday with a high-speed encounter taking the probe about 11,000 miles (17,000 kilometers) above Earth. The solar-powered spacecraft will make its closest approach to Earth at 1652 GMT (12:52 p.m. EDT) Friday, passing over Antarctica, just south of Cape Horn, Chile.
(https://assets.cdn.spaceflightnow.com/wp-content/uploads/2017/09/22134618/OSIRIS-REx-EGA-Beauty-Shot.png)
Artist's concept of the OSIRIS-REx spacecraft flying by Earth. Credit: NASA/Goddard Space Flight Center/University of Arizona

Navigators have confirmed OSIRIS-REx's trajectory will not go near any satellites or space junk tracked in Earth orbit, officials said.

OSIRIS-REx is approaching Earth at a relative velocity of 19,000 mph -- more than 30,000 kilometers per hour -- after traveling almost 600 million miles (1 billion kilometers) since its blastoff Sept. 8, 2016. The spacecraft spent the last year orbiting the sun, fine-tuning its flight path with several engine and thruster firings to aim for Friday's Earth flyby.

The spacecraft will get a gravitational kick fr om the encounter, employing Earth's gravity to redirect its orbit toward asteroid Bennu, an object measuring around 1,600 feet (500 meters) in diameter. Bennu circles the sun on a course tilted roughly 6 degrees from the plane of Earth's orbit, requiring OSIRIS-REx to fight against the sun's gravitational pull to reach the asteroid.

Friday's flyby will impart a change in OSIRIS-REx's velocity of around 8,400 mph -- nearly 4 kilometers per second -- around twice the adjustment possible if the spacecraft dedicated all of its fuel to the maneuver.

Manufactured by Lockheed Martin, OSIRIS-REx would have needed a much bigger, and more expensive, launcher to fly directly from Earth to Bennu, or carry a heavier load of fuel, a design change that would also have necessitated a larger rocket.

"It was a way to substantially save on resources, either on the spacecraft or on the launch vehicle, or both," said Dante Lauretta, OSIRIS-REx's principal investigator from the University of Arizona.

The gravity assist is similar to maneuvers used on many interplanetary missions, and the slingshot effect is natural, requiring no input from the spacecraft once it's on course for the flyby.

"For about an hour, NASA will be out of contact with the spacecraft as it passes over Antarctica," said Mike Moreau, the flight dynamics system lead at NASA's Goddard Space Flight Center. "OSIRIS-REx uses the Deep Space Network to communicate with Earth, and the spacecraft will be too low relative to the southern horizon to be in view with either the Deep Space tracking station at Canberra, Australia, or Goldstone, California."

NASA will regain communications with OSIRIS-REx around 1740 GMT (1:40 p.m. EDT), and the spacecraft will begin collecting imagery and calibration data with its science instruments around four hours after closest approach at a distance of around 60,000 miles (100,000 kilometers) from Earth.

(https://assets.cdn.spaceflightnow.com/wp-content/uploads/2017/09/22153019/What-Path-Will-OREx-Take.png)
OSIRIS-REx will approach Earth over the night side of the planet, then swing over the South Pole and depart over the Pacific Ocean in daylight. Credit: NASA/Goddard Space Flight Center/University of Arizona

According to Lauretta, OSIRIS-REx's three imaging cameras will look back at Earth and the moon for up to 10 days after the encounter, capturing close-up and long-range views, including a family portrait of the Earth-moon system.

The spacecraft is closing in on Earth above the night side of the planet, meaning the best views will come on OSIRIS-REx's outbound leg as it departs over the Pacific Ocean.

OSIRIS-REx's thermal emission spectrometer and visible and infrared spectrometer will also collect data on Earth for calibration, ensuring the accuracy of measurements gathered at Bennu. The mission's Canadian-built laser altimeter and a student-built dust experiment will not be fully activated until arrival at Bennu.

Images from the flyby will be released Tuesday, officials said.

"The spacecraft is doing extremely well," Lauretta said in an interview with Spaceflight Now. "We have checked out all of the spacecraft subsystems, and everything is woking as expected. The instruments have gone through two checkout and calibration campaigns."

OSIRIS-REx is short for the Origins, Spectral Interpretation, Resource Identification, and Security - Regolith Explorer, an approximately $1 billion mission funded by NASA to travel to asteroid Bennu, snag at least 2.1 ounces -- 60 grams -- of surface material, and return the specimens to Earth in September 2023.

Next up for the mission will be a series of course correction burns over the next year to set up for the final approach to Bennu.

Science observations of Bennu will begin in August 2018, and detailed images of Bennu should be acquired by OSIRIS-REx in October. Analysts will look for evidence of debris or moons in the asteroid's vicinity before OSIRIS-REx's arrival.

"The encounter, as the flight dynamicists think about it, happens in November of 2018," Lauretta said. "That's when we'll actually do a close approach over the north pole of the asteroid with an imaging campaign, and then do a couple of maneuvers and repeat that sequence multiple times."

OSIRIS-REx will go into orbit around the asteroid and identify locations wh ere the probe's sampling mechanism could scoop up material for return to Earth. The mission is the first asteroid sample return attempt mounted by NASA, and the second worldwide after Japan's Hayabusa mission brought back microscopic specimens from asteroid Itokawa in 2010.

Some time in July 2020, a robotic arm will reach down to the asteroid's surface with a device that will unleash a pulse of compressed nitrogen gas, scouring up bits of dust and rock into a collection chamber.

The spacecraft will leave Bennu in 2021 for the cruise back to Earth, wh ere it will drop the sample-carrying canister for re-entry and a parachute-assisted landing in Utah on Sept. 24, 2023. Scientists will inspect and analyze the samples in a special clean room at NASA's Johnson Space Center in Houston, looking for signs of organic molecules and other primordial building blocks that formed the planets and seeded life.

"This is really giving us a taste of what we're going to experience next year, and I think it's the start of building the excitement for our asteroid encounter," Lauretta said of Friday's flyby of Earth.
Название: OSIRIS-REx
Отправлено: tnt22 от 22.09.2017 19:01:18
Цитата (https://pbs.twimg.com/profile_images/271119562/jcmy2_bigger.jpg) Jonathan McDowell‏Подлинная учетная запись @planet4589 (https://twitter.com/planet4589) 37 мин. назад (https://twitter.com/planet4589/status/911249237224062976)

For the next half hour OSIRIS-Rex passes through the GEO altitude range but far to the south of the GEO belt. Now 40000 km above Adelaide
Название: OSIRIS-REx
Отправлено: tnt22 от 22.09.2017 19:52:53
http://spaceflight101.com/osiris-rex/osiris-rex-earth-gravity-assist/
ЦитатаOSIRIS-REx Earth Gravity Assist sets up Distant Rendezvous with Asteroid Bennu
September 22, 2017 (http://spaceflight101.com/osiris-rex/osiris-rex-earth-gravity-assist/)

(http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2017/09/osiris-rex_ega_beauty_shot-512x376.jpg) (http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2017/09/osiris-rex_ega_beauty_shot.jpg)
Image: NASA

Over a year after its launch, NASA's OSIRIS-REx spacecraft is inbound for a close flyby of Earth on Friday to use the planet's gravity to bend its flight path and place it on a course approaching asteroid Bennu next year for an up-close study of the ancient world including a daring touch-and-go maneuver to vacuum up sample material that is hoped to provide insight into the birth and early formation of the Solar System.

Friday's gravity assist brings the two-metric-ton OSIRIS-REx spacecraft to a closest approach at a distance of around 17,000 Kilometers, passing within the Geostationary Belt where the world's communications and weather satellites reside. The primary purpose of the maneuver is 'borrowing' some momentum fr om Earth to place the craft onto its approach path to Bennu for arrival in November 2018, but the flyby will also be utilized as a welcome opportunity to use the well-known Earth-Moon system to calibrate the spacecraft's instruments after a year in space.
(http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2017/09/outbound-cruise-512x418.png) (http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2017/09/outbound-cruise.png)
OSIRIS-REx Roadmap to Bennu - Image: NASA/University of Arizona

The Lockheed-built OSIRIS-REx spacecraft departed Earth atop an Atlas V rocket on September 8, 2016 - lifting off fr om Florida's Space Coast and receiving a smooth ride on the two-stage rocket that accelerated it beyond Earth's gravitational grasp. Placed into a solar orbit of 0.78 x 1.23 Astronomical Units, inclined 0.2°, OSIRIS-REx was set for one year of mostly quiet cruising ahead of its re-rendezvous with planet Earth.

OSIRIS-REx completed a major Deep Space Maneuver (http://spaceflight101.com/osiris-rex/osiris-rex-aces-deep-space-maneuver/) on December 28, 2016 to change course toward its Earth gravity assist, firing the main engines to change its speed by 431 meters per second. The spacecraft made a 2.6-meter-per-second clean-up maneuver on January 18 to fine-tune its trajectory and a precise course correction on August 23 used the craft's Attitude Control System for a 77-second burn to change speed by 0.48 meters per second as a final setup maneuver for the flyby.

>> OSIRIS-REx Mission / Trajectory Design (http://spaceflight101.com/osiris-rex/osiris-rex-mission-profile/)

(http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2016/08/ss-gravity-assist-512x299.jpg) (http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2016/08/ss-gravity-assist.jpg)
Earth Gravity Assist Trajectory - Image: NASA

While coasting in its orbit around the sun, OSIRIS-REx went through a number of testing activities on its instruments and ten days in February were used to point the craft's Mapping Camera toward the Sun-Earth Lagrange Point 4 to look for Trojan asteroids - bodies captured at the L4 point and traveling around the sun ahead of Earth. No Trojans were discovered, but the experiment proved MapCam's sensitivity as a number of faint main belt asteroids were detected by the instrument.

The OSIRIS-REx spacecraft arrived back in Earth's Hill Sphere on September 19 wh ere Earth represents the primary gravitational force acting on the vehicle, altering its course. Closest approach occurs on Friday, September 22 at 16:51:45 UTC at an altitude of 17,237 Kilometers over Antarctica, due south of Cape Horn, at a relative speed of 30,670 Kilometers per hour.

(http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2017/09/DKTWbXbUQAElGEE-512x312.jpg) (http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2017/09/DKTWbXbUQAElGEE.jpg)
Earth Gravity Assist Ground Track - Image: NASA

OSIRIS-REx dips below the Geostationary Orbit altitude at 15:32 UTC and communications will be lost for up to 55 minutes as the spacecraft fades below the horizon as seen from the Deep Space Network Station in Canberra, Australia around 16:45 UTC and the signal is re-acquired by Goldstone, California at 17:40 UTC. The spacecraft will rise above Geostationary Altitude at 18:11 UTC and make its closest approach to the Moon around ten hours after the flyby, coming no closer than 265,500 Kilometers.

The OSIRIS-REx mission team screened the spacecraft's path well ahead of time for any satellites or pieces of space debris to make sure there would be no close conjunction with any resident object in Earth orbit. As a precautionary measure, a pre-determined maneuver was ready to go into action the day before closest approach to have OSIRIS-REx change course in case of a late identified conjunction, but orbital data showed the craft would come no closer than 900 Kilometers to any known orbiting object.

(http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2017/09/jupiter_for_release_hr2-512x345.jpg) (http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2017/09/jupiter_for_release_hr2.jpg)
Jupiter & three Galilean Moons captured by PolyCam - Image: NASA/Goddard/University of Arizona

OSIRIS-REx will depart Earth's Hill Sphere at 8:49 UTC on September 25 after the angular momentum exchange with Earth imparted a change in velocity of 3.778 Kilometers per second - around 90% more than what would be possible with the spacecraft's initial propellant load. The majority of delta-v provided by the Earth gravity assist is going into the plane-change maneuver, transitioning OSIRIS-REx from a 0.2-degree inclined solar orbit into a six-degree orbit to match Bennu's orbital tilt.

The target heliocentric orbit (https://twitter.com/planet4589/status/910318327658147840) for OSIRIS-REx after the Earth flyby is 0.87 by 1.31 Astronomical Units, inclined 6.4 degrees. Asteroid Bennu orbits at 0.897 by 1.356 AU, 6.03°.

A number of science observations are planned to occur as OSIRIS-REx traverses the Earth-Moon System, approaching Earth from the night side before entering sunlight after the flyby. Initial observations are planned during a five-hour window opening at 20:52 UTC and more data will be collected at three, six and ten days after the flyby using the OSIRIS-REx Camera Suite (OCAMS), the OVIRS Visible and Infrared Spectrometer, the Thermal Emission Spectrometer, and the TAGCAMS cameras to be used during the sample collection operation at Bennu.

>> OSIRIS-REx Mission Section (http://spaceflight101.com/osiris-rex/)

>> Instrument Overviews (http://spaceflight101.com/osiris-rex/osiris-rex-instruments/)

(http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2017/09/orexega1-512x360.jpg) (http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2017/09/orexega1.jpg)
Image: NASA

Out of an abundance of caution, the OSIRIS-REx science team deactivated all instruments on the spacecraft a month before the gravity assist to eliminate any risk of an instrument-related safe mode on the spacecraft hampering any Trajectory Correction Windows. In total, OSIRIS-REx had three TCM windows to adjust its course, but only the first on August 23 was needed as the maneuver put the spacecraft on a very precise course. The instruments will be powered up two hours after closest approach if nothing unforeseen occurs.

A number of missions have used Earth Gravity Assist maneuvers as welcome opportunities for science calibration since the spectral properties of the Earth and Moon are very well understood after decades of studies, allowing instruments to be calibrated after spending an extended period in space. Exercising the instruments also provides knowledge on operational aspects like command sequences and other mission control elements that have to run smoothly when operating in proximity of Bennu.

(http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2016/08/osirisrex-37-512x252.jpg) (http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2016/08/osirisrex-37.jpg)
Image: University of Arizona

The MapCam instrument will collect imagery at various distances with its field of view matching the size of the Pacific Ocean from a distance of around 100,000 Kilometers. The much narrower PolyCam will capture images at a resolution of 500 Kilometers on Earth's surface. For lunar observations, geometry does not play out favorably for OSIRIS-REx, looking at the Moon at less-than-ideal phase angles when imaging begins three days after the Earth flyby, though imaging will continue until the spacecraft is over one million Kilometers from Earth.

The OSIRIS-REx science team hopes to release initial photos from the spacecraft's passage through the Earth-Moon System on September 26. All in all, the spacecraft will capture nearly 1,000 images in the ten days after its flyby.

Outbound from Earth, OSIRIS-REx will go back into quiet coasting for another lap around the sun that will take it ever closer to asteroid Bennu. Another major Deep Space Maneuver on June 19, 2018 will mark the start of the craft's rendezvous with Bennu, comprising a series of additional maneuvers until PolyCam can acquire the asteroid in August 2018 for the start of the approach phase.

(http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2016/08/28772534132_493aabf969_k-512x341.jpg) (http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2016/08/28772534132_493aabf969_k.jpg)
OSIRIS-REx before Launch - Photo: NASA Kennedy

OSIRIS-REx will arrive at Bennu in November 2018 for an initial period of formation flying at five Kilometers before heading into a one-Kilometer orbit around the asteroid, going through different surveying phases and touch-and-go rehearsals before attempting a critical maneuver to make contact with Bennu and collect up to two Kilograms of sample material. Depending on science-driven decisions, OSIRIS-REx could depart Bennu as early as January 2020 or as late as April 10, 2022 with the mission's baseline plan calling for the return of the sample on September 24, 2023 via parachute-assisted landing in Utah.

Asteroid Bennu is a dark, unexplored world roaming the Inner Solar System in an orbit taking it close to Earth every six years. This makes the 500-meter asteroid one of the more accessible bodies for a mission like OSIRIS-REx but also puts Bennu in the category of potential Earth impactors that could hit the planet at a future date.

(http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2016/08/OSIRIS-REx-spacecraft-illustration-LM-512x512.jpg) (http://spaceflight101.com/osiris-rex/wp-content/uploads/sites/103/2016/08/OSIRIS-REx-spacecraft-illustration-LM.jpg)
Image: Lockheed Martin

Asteroids are often likened to time capsules from the early beginnings of the solar system, having not undergone significant alteration since the early stages of planetary formation. Therefore, carbon-rich asteroids like Bennu are considered a scientific treasure trove that could hold the answer to the question how the building blocks of life were delivered to Earth to permit life to develop.

Collecting a sample from the asteroid's surface and returning it to Earth for laboratory tests will enable scientists to look back to the very dawn of the Solar System and help understand the original inventory of organics present in this early stadium, feeding into processes that led to life and the habitability of planet Earth.

Sample return missions have the advantage of utilizing state-of-the-art laboratories for very precise analysis that can not be duplicated by any spacecraft instrument.

Carbon-rich asteroids have been identified as the likely candidates that delivered prebiotic compounds to Earth, organic molecules that became essential in the formation of life. Studying these processes will broaden our understanding of why we are here and how likely it is that these processes also led to the formation of life elsewh ere in the Solar System and even throughout the universe.
Название: OSIRIS-REx
Отправлено: tnt22 от 22.09.2017 21:41:03
https://www.nasa.gov/feature/nasa-s-osiris-rex-spacecraft-slingshots-past-earth
ЦитатаSept. 22, 2017

NASA'S OSIRIS-REx Spacecraft Slingshots Past Earth

NASA's asteroid sample return spacecraft successfully used Earth's gravity on Friday to slingshot itself on a path toward the asteroid Bennu, for a rendezvous next August.

At 12:52 p.m. EDT on Sept. 22, the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security - Regolith Explorer) spacecraft came within 10,711 miles (17,237 km) of Antarctica, just south of Cape Horn, Chile, before following a route north over the Pacific Ocean.
OSIRIS-REx launched from Cape Canaveral Air Force Station in Florida on Sept. 8, 2016, on an Atlas V 411 rocket. Although the rocket provided the spacecraft with the all the momentum required to propel it forward to Bennu, OSIRIS-REx needed an extra boost from the Earth's gravity to change its orbital plane. Bennu's orbit around the Sun is tilted six degrees from Earth's orbit, and this maneuver changed the spacecraft's direction to put it on the path toward Bennu.

As a result of the flyby, the velocity change to the spacecraft was 8,451 miles per hour (3.778 kilometers per second).

"The encounter with Earth is fundamental to our rendezvous with Bennu," said Rich Burns, OSIRIS-REx project manager at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "The total velocity change from Earth's gravity far exceeds the total fuel load of the OSIRIS-REx propulsion system, so we are really leveraging our Earth flyby to make a massive change to the OSIRIS-REx trajectory, specifically changing the tilt of the orbit to match Bennu."

The mission team also is using OSIRIS-REx's Earth flyby as an opportunity to test and calibrate the spacecraft's instrument suite. Approximately four hours after the point of closest approach, and on three subsequent days over the next two weeks, the spacecraft's instruments will be turned on to scan Earth and the Moon. These data will be used to calibrate the spacecraft's science instruments in preparation for OSIRIS-REx's arrival at Bennu in late 2018.

"The opportunity to collect science data over the next two weeks provides the OSIRIS-REx mission team with an excellent opportunity to practice for operations at Bennu," said Dante Lauretta, OSIRIS-REx principal investigator at the University of Arizona, Tucson. "During the Earth flyby, the science and operations teams are co-located, performing daily activities together as they will during the asteroid encounter."

The OSIRIS-REx spacecraft is currently on a seven-year journey to rendezvous with, study, and return a sample of Bennu to Earth. This sample of a primitive asteroid will help scientists understand the formation of our solar system more than 4.5 billion years ago.

NASA's Goddard Space Flight Center provides overall mission management, systems engineering and the safety and mission assurance for OSIRIS-REx. Dante Lauretta of the University of Arizona, Tucson, is the principal investigator, and the University of Arizona also leads the science team and the mission's science observation planning and data processing. Lockheed Martin Space Systems in Denver built the spacecraft and is providing flight operations. Goddard and KinetX Aerospace are responsible for navigating the OSIRIS-REx spacecraft. OSIRIS-REx is the third mission in NASA's New Frontiers Program. NASA's Marshall Space Flight Center in Huntsville, Alabama, manages the agency's New Frontiers Program for the Science Mission Directorate in Washington.

Erin Morton
 University of Arizona, Tucson

Nancy Neal Jones (mailto:nancy.n.jones@nasa.gov)
NASA's Goddard Space Flight Center (http://www.nasa.gov/goddard), Greenbelt, Maryland
Last Updated: Sept. 22, 2017
Editor: Karl Hille
Название: OSIRIS-REx
Отправлено: tnt22 от 22.09.2017 23:22:25
Цитата (https://pbs.twimg.com/profile_images/880089442832138241/cqqqKUmb_bigger.jpg) Dante Lauretta‏ @DSLauretta (https://twitter.com/DSLauretta) 1 ч. назад (https://twitter.com/DSLauretta/status/911302349058011136)

Congratulations @OSIRISREx (https://twitter.com/OSIRISREx) team on a successful Earth Gravity Assist - trajectory is absolutely perfect - right up the middle!
Название: OSIRIS-REx
Отправлено: tnt22 от 23.09.2017 00:34:52
Цитата (https://pbs.twimg.com/profile_images/271119562/jcmy2_bigger.jpg) Jonathan McDowell‏Подлинная учетная запись @planet4589 (https://twitter.com/planet4589) 13 мин. назад (https://twitter.com/planet4589/status/911339579554312192)

OSIRIS-Rex now heading away from Earth, range 108000 km and increasing
Название: OSIRIS-REx
Отправлено: tnt22 от 23.09.2017 01:39:58
Цитата (https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 1 ч. назад (https://twitter.com/OSIRISREx/status/911340523264151553)

Thanks for the boost! Just what I needed. Onward to Bennu! (https://abs.twimg.com/emoji/v2/72x72/1f6f0.png)(https://abs.twimg.com/emoji/v2/72x72/21aa.png)(https://abs.twimg.com/emoji/v2/72x72/1f30f.png)(https://abs.twimg.com/emoji/v2/72x72/2197.png)(https://abs.twimg.com/emoji/v2/72x72/2604.png) #EarthGravityAssist (https://twitter.com/hashtag/EarthGravityAssist?src=hash)
Цитата (https://pbs.twimg.com/profile_images/674396782630014976/qNGmQlRC_bigger.png) NASA Earth‏Подлинная учетная запись @NASAEarth (https://twitter.com/NASAEarth) 6 ч назад (https://twitter.com/NASAEarth/status/911264934184419328)

#HelloOSIRISREx (https://twitter.com/hashtag/HelloOSIRISREx?src=hash)! Always happy to help. (https://abs.twimg.com/emoji/v2/72x72/263a.png)
Название: OSIRIS-REx
Отправлено: che wi от 23.09.2017 08:25:51
«Охотник за астероидом» НАСА приблизился к Земле на пути к космическому камню (http://www.astronews.ru/cgi-bin/mng.cgi?page=news&news=10269)

ЦитатаКосмический аппарат НАСА, направляющийся к астероиду, использовал нашу планету для совершения гравитационного маневра в пятницу, двигаясь в направлении своей научной цели - космического камня.

Запущенный примерно год назад, космический аппарат Osiris-Rex прошел на расстоянии 17237 километров от нашей планеты в пятницу после обеда, пролетев над Антарктикой. Он использовал гравитацию Земли как «рогатку», благодаря которой аппарат лег на курс к астероиду Бенну.

Согласно плану зонд Osiris-Rex должен достичь этого небольшого, округлого астероида в следующем году, а в 2020 г. - отобрать с его поверхности несколько образцов грунта для возврата на Землю. Если все пройдет успешно, ученые должны получить эти образцы к 2023 г.

Пятничный пролет был довольно коротким по времени: космический аппарат мчался на скорости примерно 31000 километров в час. НАСА приняло предварительные меры, обеспечивающие безопасность спутников, находящихся на высоких орбитах, от столкновения с зондом Osiris-Rex, который по размеру сравним с легковым автомобилем.

Астероид Бенну составляет всего лишь примерно 500 метров в поперечнике и обращается вокруг Солнца по орбите, диаметр которой слегка превышает диаметр орбиты Земли. Научная станция Osiris-Rex войдет на орбиту вокруг этого астероида и будет производить поиск лучшего места на его поверхности для отбора нескольких крохотных порций грунта. Аппарат будет парить над поверхностью астероида, подобно колибри, в то время как механическая рука-манипулятор быстро опустится к поверхности и отберет при помощи всасывания немного грунта, перемешанного током азота, исходящего из двигателей космического аппарата.

Ученые говорят, что этот древний астероид может содержать ценные сведения о происхождении жизни. Считается, что он сформировался 4,5 миллиарда лет назад и является остатками «строительных кирпичиков» Солнечной системы.
Название: OSIRIS-REx
Отправлено: zandr от 23.09.2017 23:08:58
http://tass.ru/kosmos/4586625 (http://tass.ru/kosmos/4586625)
ЦитатаЗонд OSIRIS-REx совершил маневр над Землей и вышел на траекторию полета к астероиду Бенну
(https://cdn3.tass.ru/width/744_b12f2926/tass/m2/uploads/i/20170923/4567278.jpg)
© Conceptual Image Lab/Goddard Space Flight Center/NASA via AP
ВАШИНГТОН, 23 сентября. /Корр. ТАСС Дмитрий Кирсанов/. Американский научный космический аппарат OSIRIS-REx успешно совершил в пятницу гравитационный маневр у Земли и вышел на траекторию полета к астероиду Бенну. Об этом сообщила в тот же день пресс-служба Национального управления США по аэронавтике и исследованию космического пространства (NASA).
Над Антарктикой
Как она уточнила, в 12:52 по времени Восточного побережья США (19:52 мск) зонд приблизился к Земле на расстояние 17237 км и использовал ее силу притяжения подобно праще, чтобы набрать необходимое ускорение и поменять плоскость своей орбиты. При этом аппарат пролетел над Антарктидой в районе мыса Горн. Затем он начал двигаться на север над Тихим океаном. Планируется, что сближение автоматической станции с астероидом Бенну начнется в августе будущего года.
Согласно изложенной NASA информации, вследствие предпринятого маневра скорость движения аппарата увеличилась на 3,8 км в секунду. Такого изменения не удалось бы добиться и за счет сжигания "всего запаса топлива двигательной системы" зонда, подчеркнул Рич Бернс из Центра космических полетов имени Годдарда в Гринбелте (штат Мэриленд). Он является в этом научном центре NASA руководителем проекта OSIRIS-REx. По словам Бернса, наклонение орбиты зонда теперь совмещено с той, по которой движется астероид Бенну.
Кроме того, нынешний пролет аппарата над Землей будет использован для тестирования и калибрования установленных на нем научных приборов, отметило NASA. В соответствии с его данными, инструменты зонда в течение ближайших двух недель будут периодически включаться на определенное время, "чтобы сканировать Землю и Луну". Полученная информация будет использована для калибровки приборов в преддверии намеченной на следующий год встречи с астероидом Бенну, пояснило NASA. Речь идет в том числе о "прекрасной возможности попрактиковаться" заблаговременно в применении инструментов зонда, сказал профессор Университета штата Аризона Данте Лауретта, участвующий в поддержке миссии OSIRIS-REx.
О проекте
Этот зонд, выведенный в космос в сентября минувшего года, оснащен несколькими приборами, в том числе фотокамерами, спектрометрами и лазерным высотомером. Аппарат должен выйти на орбиту вокруг Солнца, по которой вращается астероид Бенну, догнать его и приступить к изучению. Затем будет предпринята операция по захвату грунта на астероиде с помощью руки-манипулятора, снабженной специальным пневматическим устройством. В общей сложности сотрудники NASA рассчитывают собрать от 60 г до 2 кг астероидного грунта.
По словам специалистов, одна из главных целей этого проекта - получение новых данных о строении и составе астероидов, представляющих потенциальную опасность для нашей планеты. Впоследствии эти сведения могут быть использованы при организации специальных миссий по предотвращению астероидной угрозы. Предполагается, что пробу грунта на астероиде аппарат возьмет где-то в 2019 или 2020 году. А возвращение на Землю спускаемой капсулы зонда намечается на сентябрь 2023 года.
Как ожидается, изучение этой пробы грунта поможет ученым лучше понять, как протекало формирование Солнечной системы.
Бенну диаметром около 550 м вращается по эллиптической орбите вокруг Солнца. Астрономы относят его к Аполлонам - астероидам, орбиты которых пересекают орбиту Земли. Вероятность столкновения с ним составляет 1 к 4000. Его падение на Землю было бы эквивалентно взрыву мощностью 2700 мегатонн.
OSIRIS-REx является одним из трех аппаратов, созданных экспертами NASA для запуска в дальний космос по программе New Frontiers ("Новые рубежи"). Два других - это межпланетная станция New Horizons ("Новые горизонты"), пролетевшая в прошлом году на близком расстоянии от Плутона, и автоматическая межпланетная станция Juno ("Юнона"), при помощи которой ведутся исследования Юпитера.
Название: OSIRIS-REx
Отправлено: tnt22 от 27.09.2017 01:19:44
https://www.nasa.gov/image-feature/goddard/2017/osiris-rex-views-the-earth-during-flyby
ЦитатаSept. 26, 2017

OSIRIS-REx Views the Earth During Flyby

(https://www.nasa.gov/sites/default/files/styles/full_width_feature/public/thumbnails/image/ega_1ms_mapcam_color_corrected_0.png) (https://www.nasa.gov/sites/default/files/thumbnails/image/ega_1ms_mapcam_color_corrected_0.png)

A color composite image of Earth taken on Sept. 22 by the MapCam camera on NASA's OSIRIS-REx spacecraft. This image was taken just hours after the spacecraft completed its Earth Gravity Assist at a range of approximately 106,000 miles (170,000 kilometers). MapCam is part of the OSIRIS-REx Camera Suite (OCAMS) operated by the University of Arizona. Visible in this image are the Pacific Ocean and several familiar landmasses, including Australia in the lower left, and Baja California and the southwestern United States in the upper right. The dark vertical streaks at the top of the image are caused by short exposure times (less than three milliseconds). Short exposure times are required for imaging an object as bright as Earth, but are not anticipated for an object as dark as the asteroid Bennu, which the camera was designed to image.

For more images from NASA's OSIRIS-REx spacecraft, visit:
http://www.asteroidmission.org/galleries/#spacecraft-imagery
Credit: NASA's Goddard Space Flight Center/University of Arizona

Last Updated: Sept. 26, 2017
Editor: Karl Hille
Название: OSIRIS-REx
Отправлено: tnt22 от 29.09.2017 04:09:31
Цитата (https://pbs.twimg.com/profile_images/579415786994839552/aE3uhPPr_bigger.jpg) NASA Goddard Images‏Подлинная учетная запись @NASAGoddardPix (https://twitter.com/NASAGoddardPix) 6 ч. назад (https://twitter.com/NASAGoddardPix/status/913481579477045250)

NASA's @OSIRISREx (https://twitter.com/OSIRISREx) snapped pictures of Earth and the Moon from 69,000 miles away: http://bit.ly/2hzPPol  (https://t.co/ULj1X3g3xA) (https://abs.twimg.com/emoji/v2/72x72/1f30e.png)(https://abs.twimg.com/emoji/v2/72x72/1f315.png)(https://abs.twimg.com/emoji/v2/72x72/1f6f0.png)
(https://pbs.twimg.com/media/DK1T7rJXkAAAiWu.jpg)
(https://pbs.twimg.com/media/DK1WUK0WsAA34Ei.jpg)
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Цитата

instagram.com/p/BZmHnSZFOMf/ (https://www.instagram.com/p/BZmHnSZFOMf/?taken-by=nasagoddard)
Название: OSIRIS-REx
Отправлено: tnt22 от 29.09.2017 04:13:15
https://www.nasa.gov/feature/goddard/2017/osiris-rex-snaps-pictures-of-earth-and-the-moon
ЦитатаSept. 28, 2017

NASA's OSIRIS-REx Snaps Pictures of Earth and the Moon
(https://www.nasa.gov/sites/default/files/styles/full_width/public/thumbnails/image/osiris-rex_bwearth_copy.jpg?itok=OvWWKjma) (https://www.nasa.gov/sites/default/files/thumbnails/image/osiris-rex_bwearth_copy.jpg)
The first image taken by NASA's OSIRIS-REx spacecraft after completion of its Earth Gravity Assist maneuver on Sept. 22, 2017, cropped to show in greater detail the spacecraft's view of Earth from 69,000 miles (110,000 kilometers). The image has been rotated so that Earth's north pole is located at the top, and the Baja Peninsula is visible above and to the right of center. Cloud cover and the Pacific Ocean dominate most of the image, but Hurricane Maria and the remnants of Hurricane Jose can be seen in the far upper-right portion of the image, off the east coast of the United States. This image was captured by NavCam 1, a black-and-white imager that is one of three cameras comprising TAGCAMS (the Touch-and-Go Camera System), which is part of OSIRIS-REx's guidance, navigation, and control system. NavCam images will track starfields and landmarks on Bennu to determine the spacecraft position during mission operations.
Credits: NASA/Goddard/University of Arizona


(https://www.nasa.gov/sites/default/files/styles/full_width/public/thumbnails/image/osiris-rexearthmoon_rotated2.jpg?itok=SQIKp69x) (https://www.nasa.gov/sites/default/files/thumbnails/image/osiris-rexearthmoon_rotated2.jpg)
This black-and-white image of the Earth-Moon system was captured on Sept. 25, 2017 by NavCam 1, one of three cameras that comprise TAGCAMS (the Touch-and-Go Camera System) on NASA's OSIRIS-REx spacecraft. At the time this image was taken, the spacecraft was retreating from Earth after performing an Earth Gravity Assist maneuver on Sept. 22. Earth and the Moon are shown 249,000 miles (401,200 kilometers) apart, and the spacecraft is 804,000 miles (1,297,000 kilometers) from Earth and 735,000 miles (1,185,000 kilometers) from the Moon.
Credits: NASA/Goddard/University of Arizona
Last Updated: Sept. 28, 2017
Editor: Karl Hille
Название: OSIRIS-REx
Отправлено: zandr от 05.10.2017 07:41:29
http://tass.ru/kosmos/4618635
ЦитатаУченые успешно калибровали инструменты летящего к астероиду Бенну зонда OSIRIS-REx
ВАШИНГТОН, 5 октября. /Корр. ТАСС Дмитрий Кирсанов/. Американские специалисты успешно откалибровали научные приборы космического аппарата OSIRIS-REx, летящего к астероиду Бенну. Об этом сообщила в среду корреспондент ТАСС официальный представитель Лунной и планетарной лаборатории (ЛПЛ) Университета штата Аризона Эрин Мортон.
"Нам удалось подтвердить, что научные инструменты, установленные на борту этого космического аппарата, сработали, как планировалось, в ходе четырех дней научных наблюдений. И ученые смогли калибровать их, используя Землю и Луну в качестве мишеней", - сказала сотрудник ЛПЛ. Это учреждение занимается вместе с Национальным управлением США по аэронавтике и исследованию космического пространства (NASA) и рядом других американских научных центров реализацией проекта OSIRIS-REx.
Мортон подтвердила, что зонд "теперь движется курсом на Бенну". На траекторию полета к этому астероиду аппарат вышел, совершив 22 сентября гравитационный маневр у Земли. Зонд тогда приблизился к Земле на расстояние 17237 км и использовал ее силу притяжения подобно праще, чтобы набрать необходимое ускорение и поменять плоскость своей орбиты. При этом аппарат пролетел над Антарктидой в районе мыса Горн.
Точный расчет
Как уточнила представитель ЛПЛ, этот пролет у Земли был совершен "настолько точно, что космическому аппарату не понадобится совершать маневр коррекции траектории, который намечался на начало октября". "В июне 2018 года зонд должен будет выполнить еще один маневр в глубоком космосе, а затем серию небольших маневров на подлете к астероиду, чтобы поменять скорость и направление [движения]", - рассказала Мортон. Как она пояснила, за счет этих маневров автоматическая станция "сможет перейти на орбиту вокруг астероида Бенну".
Планируется, что сближение автоматической станции с астероидом Бенну начнется в августе будущего года.
О проекте
Зонд, выведенный в космос в сентября минувшего года, оснащен несколькими приборами, в том числе фотокамерами, спектрометрами и лазерным высотомером. Аппарат должен выйти на орбиту вокруг Солнца, по которой вращается астероид Бенну, догнать его и приступить к его изучению. Затем будет предпринята операция по захвату грунта на астероиде с помощью руки-манипулятора, снабженной специальным пневматическим устройством. В общей сложности сотрудники NASA рассчитывают собрать от 60 г до 2 кг астероидного грунта.
Одна из главных целей этого проекта - получение новых данных о строении и составе астероидов, представляющих потенциальную опасность для нашей планеты. Впоследствии эти сведения могут быть использованы при организации специальных миссий по предотвращению астероидной угрозы. Предполагается, что пробу грунта на астероиде аппарат возьмет где-то в 2019 или 2020 году. А возвращение на Землю спускаемой капсулы зонда намечается на сентябрь 2023 года.
Как ожидается, изучение этой пробы грунта поможет ученым и лучше понять, как протекало формирование Солнечной системы.
Бенну диаметром около 550 м вращается по эллиптической орбите вокруг Солнца. Астрономы относят его к Аполлонам - астероидам, орбиты которых пересекают орбиту Земли. Вероятность столкновения с ним составляет 1 к 4000. Его падение на Землю было бы эквивалентно взрыву мощностью 2700 мегатонн.
OSIRIS-REx является одним из трех аппаратов, созданных экспертами NASA для запуска в дальний космос по программе New Frontiers. Два других - это межпланетная станция New Horizons, пролетевшая в прошлом году на близком расстоянии от Плутона, и автоматическая межпланетная станция Juno, при помощи которой ведутся исследования Юпитера.
Название: OSIRIS-REx
Отправлено: tnt22 от 30.12.2017 02:50:38
http://www.asteroidmission.org/where-is-the-spacecraft/
Цитата
Where is the Spacecraft?

(http://www.asteroidmission.org/wp-content/uploads/2017/12/Orbit-Diagram-12-26-17-768x611.png) (http://www.asteroidmission.org/orbit-diagram-12-26-17/)

(http://www.asteroidmission.org/wp-content/uploads/2017/12/Digital-Readout-12-26-17-768x176.png) (http://www.asteroidmission.org/digital-readout-12-26-17/)
Current Status:
Outbound Cruise Phase since Sept. 8, 2016 (http://www.asteroidmission.org/?latest-news=nasas-osiris-rex-speeds-toward-asteroid-rendezvous)
Successfully completed Earth Gravity Assist flyby (http://www.asteroidmission.org/?latest-news=nasas-osiris-rex-spacecraft-slingshots-past-earth) on Sept. 22, 2017

Up Next:
Deep Space Maneuver 2 scheduled for June 28, 2018
Название: OSIRIS-REx
Отправлено: tnt22 от 03.01.2018 08:03:41
https://www.nasa.gov/image-feature/fr om-the-earth-moon-and-beyond
ЦитатаJan. 2, 2018

Fr om the Earth, Moon and Beyond

(https://www.nasa.gov/sites/default/files/styles/full_width_feature/public/thumbnails/image/full_1024x1024.png) (https://www.nasa.gov/sites/default/files/thumbnails/image/full_1024x1024.png)

The purpose of NASA's OSIRIS-REx spacecraft (https://www.nasa.gov/osiris-rex)--Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer--is to map and return samples fr om asteroid Bennu, a carbon-rich hunk of rock that might contain organic materials or molecular precursors to life. It is also an asteroid that could someday make a close pass or even a collision with Earth, though not for several centuries. The OSIRIS-Rex spacecraft is expected to reach its asteroid destination (https://www.nasa.gov/feature/goddard/2017/mission-status-update-cruising-toward-asteroid-bennu), Bennu, in August 2018.
OSIRIS-REx is a mission to figure out where we came from, as asteroids are remnants from the formation of our solar system. But while the spacecraft might tell us some things about wh ere we have been and wh ere we are headed, it also can remind us of wh ere we are right now.

This composite image of the Earth and Moon (https://earthobservatory.nasa.gov/IOTD/view.php?id=91494) is made from data captured by OSIRIS-REx's MapCam instrument on October 2, 2017, when the spacecraft was approximately 3 million miles (5 million kilometers) from Earth, about 13 times the distance between the Earth and Moon. (Click here (https://www.asteroidmission.org/?attachment_id=3229#main) to see the geometry of the shot.) Three images (different color wavelengths) were combined and color-corrected to make the composite, and the Moon was "stretched" (brightened) to make it more easily visible.

Image Credit: NASA/OSIRIS-REx team and the University of Arizona
Last Updated: Jan. 2, 2018
Editor: Yvette Smith
Название: OSIRIS-REx
Отправлено: tnt22 от 14.02.2018 21:01:50
https://www.asteroidmission.org/?latest-news=long-long-way-home
Цитата
A LONG, LONG WAY FROM HOME...
February 14, 2018 -

(https://www.asteroidmission.org/wp-content/uploads/2018/02/Earth-Moon-NavCam1-768x1024.png) (https://www.asteroidmission.org/?attachment_id=4130#main)
The OSIRIS-REx spacecraft captured this image of the Earth and Moon system using its NavCam1 imager on January 17 from a distance of 39.5 million miles (63.6 million km). Earth is the largest, brightest spot in the center of the image, with the smaller, dimmer Moon appearing to the right. Credit: NASA/Goddard/University of Arizona/Lockheed Martin

As part of an engineering test, the OSIRIS-REx spacecraft captured this image of the Earth and Moon using its NavCam1 imager on January 17 from a distance of 39.5 million miles (63.6 million km). When the camera acquired the image, the spacecraft was moving away from home at a speed of 19,000 miles per hour (8.5 kilometers per second).

Earth is the largest, brightest spot in the center of the image, with the smaller, dimmer Moon appearing to the right. Several constellations are also visible in the surrounding space. The bright cluster of stars in the upper left corner is the Pleiades in the Taurus constellation. Hamal, the brightest star in Aries, is located in the upper right corner of the image. The Earth-Moon system is centered in the middle of five stars comprising the head of Cetus the Whale.

NavCam1, a grayscale imager, is part of the TAGCAMS (Touch-And-Go Camera System) navigation camera suite. Malin Space Science Systems designed, built, and tested TAGCAMS; Lockheed Martin integrated TAGCAMS to the OSIRIS-REx spacecraft and operates TAGCAMS.
Название: OSIRIS-REx
Отправлено: tnt22 от 09.04.2018 08:01:38
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 2 апр. (https://twitter.com/OSIRISREx/status/980858145303072768)

I'm now less than 20 million km (about 12 million miles) from #asteroid (https://twitter.com/hashtag/asteroid?src=hash) Bennu -- and counting... #WhereIsOSIRISREx (https://twitter.com/hashtag/WhereIsOSIRISREx?src=hash) More on my whereabouts: http://bit.ly/WhereIsOREX  (https://t.co/rACre4FeCE)
(https://pbs.twimg.com/media/DZyvhasXcAEQ7w9.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 09.04.2018 08:03:24
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 4 апр. (https://twitter.com/OSIRISREx/status/981617954226925569)

The newest installment in our #WordOfTheWeek (https://twitter.com/hashtag/WordOfTheWeek?src=hash) series is Local Solar Time.(https://abs.twimg.com/emoji/v2/72x72/23f1.png)(https://abs.twimg.com/emoji/v2/72x72/2600.png) At Bennu, my team will use local solar time to describe viewing conditions and navigation activities based on the position of the Sun relative to the #asteroid (https://twitter.com/hashtag/asteroid?src=hash).
(https://pbs.twimg.com/media/DZ9W8hYXcAAV1Q4.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 11.04.2018 15:34:32
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 9 апр. (https://twitter.com/OSIRISREx/status/983485911899033601)

Milestone alert: I have now traveled more than 1.5 billion kilometers (932 million miles) on my journey #ToBennuAndBack (https://twitter.com/hashtag/ToBennuAndBack?src=hash)! (https://abs.twimg.com/emoji/v2/72x72/1f6f0.png) More on my whereabouts: http://bit.ly/WhereIsOREX  (https://t.co/rACre4FeCE)
(https://pbs.twimg.com/media/DaYJZLsUMAA7PHu.jpg)
Название: OSIRIS-REx
Отправлено: поц от 01.05.2018 15:22:40
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 21 ч.21 час назад (https://twitter.com/OSIRISREx/status/990993859948593153)


No sleep 'til Bennu! (https://abs.twimg.com/emoji/v2/72x72/1f3b6.png) And I've got about 488 million km (303 million miles) to go...
(https://pbs.twimg.com/media/DcCsLIxUQAEYS3-.jpg)

Название: OSIRIS-REx
Отправлено: Maks от 02.05.2018 01:21:38
Возле Земли на расстоянии 30...50 000 км регулярно пролетают астероиды. Можем ли мы коснуться его липучкой? Пластиковым ковром, покрытым мелкими пластиковыми, сталными колючками.Ковер  обернут вокруг пластикового шара радиусом 0,5 м. Шар,привязан к тросу,   должен ударить по астероиду и отскочить от него. Астероид летит со скоростью 16 км в сек. Трос привязан к космическому зонду. Шар выстреливается в астероид сжатым гелием из пневмопушки.
Пыль, камешки на поверхности астероида должны  застрять между колючками коврика.
Название: OSIRIS-REx
Отправлено: поц от 01.05.2018 19:40:48
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) сейчас45 секунд назад (https://twitter.com/OSIRISREx/status/991378357626355712)


#OnThisDay (https://twitter.com/hashtag/OnThisDay?src=hash) in 2013, my favorite asteroid was officially named Bennu.
(https://pbs.twimg.com/media/DcIVIjLUQAAyCcz.jpg)

Название: OSIRIS-REx
Отправлено: поц от 14.05.2018 18:40:11
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 7 мин.7 минут назад (https://twitter.com/OSIRISREx/status/996076534229184512)


Who me? Just reflecting on how far I've flown--nearly 1.6 billion km (978 million miles) & looking ahead to my upcoming travels. In June I'll perform my second Deep Space Maneuver, and by mid-August I'll be close enough to image Bennu!
(https://pbs.twimg.com/media/DdK-JRYU8AABQM_.jpg)

Название: OSIRIS-REx
Отправлено: поц от 23.05.2018 14:42:43
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 21 мая (https://twitter.com/OSIRISREx/status/998658078613504002)


Today is my 620th day in space! And the journey continues... I still have about 445 million km (277 million miles) to go before my rendezvous with Bennu.
(https://pbs.twimg.com/media/DdvwYvNV4AYzSoA.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 28.05.2018 20:44:00
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 3 ч. назад (https://twitter.com/OSIRISREx/status/1001118274925416448)

Can you hear me now?

I'm about 49 million kilometers (30 million miles) from Earth, and my round-trip light time is about 5 minutes and 23 seconds. (https://abs.twimg.com/emoji/v2/72x72/1f6f0.png)(https://abs.twimg.com/emoji/v2/72x72/3030.png)(https://abs.twimg.com/emoji/v2/72x72/1f4e1.png)

More on my whereabouts: http://bit.ly/WhereIsOREX  (https://t.co/rACre4nDe4)

(https://pbs.twimg.com/media/DeSbP4XU8AEmIjK.jpg)
http://www.asteroidmission.org/where-is-the-spacecraft/
ЦитатаUP NEXT:
Deep Space Maneuver 2 scheduled for June 28, 2018
Название: OSIRIS-REx
Отправлено: tnt22 от 19.06.2018 18:50:27
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 19 ч. назад (https://twitter.com/OSIRISREx/status/1008821004490010624)

Space is big. Really big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, I've traveled more than 1.65 billion km (1.02 billion miles) and still have 388 million km (241 million miles) to go before I arrive at asteroid Bennu. http://bit.ly/WhereIsOREX  (https://t.co/rACre4nDe4)

(https://pbs.twimg.com/media/Df_vSM7U0AALutX.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 26.06.2018 08:08:35
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 5 ч. назад (https://twitter.com/OSIRISREx/status/1011401374876123136)

I'm now more than 66 million km (41 million miles) from Earth -- and counting... Later this week, I'll perform Deep Space Maneuver 2, my last significant maneuver before Approach Phase begins.

More on my whereabouts: http://bit.ly/WhereIsOREX  (https://t.co/rACre4nDe4)

(https://pbs.twimg.com/media/Dgk0wk8VMAAZJRR.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 28.06.2018 21:43:01
https://www.nasa.gov/feature/goddard/2018/osiris-rex-executes-second-deep-space-maneuver
ЦитатаJune 28, 2018

OSIRIS-REx Executes Second Deep Space Maneuver

(https://www.nasa.gov/sites/default/files/styles/side_image/public/thumbnails/image/dsm-2_300_dpi.png?itok=7uEJ1-FS) (https://www.nasa.gov/sites/default/files/thumbnails/image/dsm-2_300_dpi.png)
Illustration of NASA's OSIRIS-REx spacecraft during a burn of its main engine.
Credits: University of Arizona


NASA's OSIRIS-REx spacecraft executed its second Deep Space Maneuver today, which put the spacecraft on course for its scheduled arrival at the asteroid Bennu in December. The mission team will continue to examine telemetry and tracking data as they become available and will have more information on the results of the maneuver over the next week.

Last Updated: June 28, 2018
Editor: Rob Garner
Название: OSIRIS-REx
Отправлено: tnt22 от 03.07.2018 09:27:59
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 13 ч. назад (https://twitter.com/OSIRISREx/status/1013830648987963398)

Home stretch! Last week's deep space maneuver lined me up for a series of asteroid approach maneuvers this fall that will get me to Bennu by December. It's going to be a busy rest of the year. More on my whereabouts:
http://bit.ly/WhereIsOREX  (https://t.co/rACre4nDe4)

(https://pbs.twimg.com/media/DhHV-bqUwAABukZ.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 11.07.2018 13:06:15
https://www.nasa.gov/feature/goddard/2018/osiris-rex-executes-second-deep-space-maneuver
ЦитатаJuly 3, 2018

Successful Second Deep Space Maneuver for OSIRIS-REx Confirmed

(https://www.nasa.gov/sites/default/files/styles/side_image/public/thumbnails/image/dsm-2_300_dpi.png?itok=7uEJ1-FS) (https://www.nasa.gov/sites/default/files/thumbnails/image/dsm-2_300_dpi.png)
Illustration of NASA's OSIRIS-REx spacecraft during a burn of its main engine.
Credits: University of Arizona


New tracking data confirms that NASA's OSIRIS-REx spacecraft successfully completed its second Deep Space Maneuver (DSM-2) on June 28. The thruster burn put the spacecraft on course for a series of asteroid approach maneuvers to be executed this fall that will culminate with the spacecraft's scheduled arrival at asteroid Bennu on Dec. 3.

The DSM-2 burn, which employed the spacecraft's Trajectory Correction Maneuver (TCM) thruster set, resulted in a 37 miles per hour (16.7 meters per second) change in the vehicle's velocity and consumed 28.2 pounds (12.8 kilograms) of fuel.

Tracking data from the Deep Space Network provided preliminary confirmation of the burn's execution, and the subsequent downlink of telemetry from the spacecraft shows that all subsystems performed as expected.

DSM-2 was OSIRIS-REx's last deep space maneuver of its outbound cruise to Bennu. The next engine burn, Asteroid Approach Maneuver 1 (AAM-1), is scheduled for early October. AAM-1 is a major braking maneuver designed to slow the spacecraft's speed from approximately 1,130 to 320 miles per hour (506.2 to 144.4 meters per second) relative to Bennu and is the first of four asteroid approach maneuvers scheduled for this fall.
NASA's Goddard Space Flight Center in Greenbelt, Maryland, provides overall mission management, systems engineering and the safety and mission assurance for OSIRIS-REx. Dante Lauretta of the University of Arizona, Tucson, is the principal investigator, and the University of Arizona also leads the science team and the mission's observation planning and processing. Lockheed Martin Space in Denver built the spacecraft and is providing spacecraft flight operations. Goddard and KinetX Aerospace are responsible for navigating the OSIRIS-REx spacecraft. OSIRIS-REx is the third mission in NASA's New Frontiers Program. NASA's Marshall Space Flight Center in Huntsville, Alabama, manages the agency's New Frontiers Program for its Science Mission Directorate in Washington.

Original Maneuver Update: June 28, 2018

OSIRIS-REx Executes Second Deep Space Maneuver

NASA's OSIRIS-REx spacecraft executed its second Deep Space Maneuver today, which put the spacecraft on course for its scheduled arrival at the asteroid Bennu in December. The mission team will continue to examine telemetry and tracking data as they become available and will have more information on the results of the maneuver over the next week.

Last Updated: July 5, 2018
Editor: Rob Garner
Название: OSIRIS-REx
Отправлено: tnt22 от 24.07.2018 13:01:10
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 15 ч. назад (https://twitter.com/OSIRISREx/status/1021468647737327616)

(https://abs.twimg.com/emoji/v2/72x72/1f3b6.png) Butterfly in the sky (https://abs.twimg.com/emoji/v2/72x72/1f98b.png)
I can fly twice as high (https://abs.twimg.com/emoji/v2/72x72/1f6f0.png)
Take a look (https://abs.twimg.com/emoji/v2/72x72/1f440.png)
I'm on my way (https://abs.twimg.com/emoji/v2/72x72/2197.png)
To a B-Type asteroid (https://abs.twimg.com/emoji/v2/72x72/2604.png)(https://abs.twimg.com/emoji/v2/72x72/1f3b6.png)

My journey #ToBennuAndBack (https://twitter.com/hashtag/ToBennuAndBack?src=hash) continues: http://bit.ly/WhereIsOREX  (https://t.co/rACre4nDe4)

(https://pbs.twimg.com/media/Diz0cxsUYAA6g5D.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 02.08.2018 13:48:17
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 17 ч. назад (https://twitter.com/OSIRISREx/status/1024709651672133632)

The new #WordOfTheWeek (https://twitter.com/hashtag/WordOfTheWeek?src=hash) is Spectroscopy. I have three spectrometers on board: OTES, OVIRS, and REXIS. The data they collect during my survey of Bennu will help my team understand the asteroid's thermal properties and map the elements and minerals on its surface.

(https://pbs.twimg.com/media/Djh8W5vU8AAhoz1.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 05.08.2018 18:25:29
Цитата(https://pbs.twimg.com/profile_images/535540240845250560/blH3qQuU_bigger.jpeg)Aerojet Rocketdyne‏ @AerojetRdyne (https://twitter.com/AerojetRdyne) 4 авг. (https://twitter.com/AerojetRdyne/status/1025753207509676032)

Last week @OSIRISREx (https://twitter.com/OSIRISREx) completed its 2nd successful deep #space (https://twitter.com/hashtag/space?src=hash) maneuver w/ help from @AerojetRdyne (https://twitter.com/AerojetRdyne) propulsion! The next engine burn in October will be the first of four approach maneuvers as the spacecraft gets closer to encounter with Bennu.
#BennuOrBust (https://twitter.com/hashtag/BennuOrBust?src=hash)
Название: OSIRIS-REx
Отправлено: Pirat5 от 13.08.2018 12:48:15
с 17 августа начинается Approach Phase (https://www.asteroidmission.org/asteroid-operations/)

https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Approach-Poster-6-28-18.pdf

ждём-с
Название: OSIRIS-REx
Отправлено: tnt22 от 15.08.2018 02:24:43
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 9 ч. назад (https://twitter.com/OSIRISREx/status/1029380282833559552)

I'm now more than103 million kilometers (64 million miles) from Earth. (https://abs.twimg.com/emoji/v2/72x72/1f44b-1f3fe.png) (https://abs.twimg.com/emoji/v2/72x72/1f30f.png) #WhereIsOSIRISREx (https://twitter.com/hashtag/WhereIsOSIRISREx?src=hash) More on my whereabouts: http://bit.ly/WhereIsOREX  (https://t.co/rACre4nDe4)

(https://pbs.twimg.com/media/Dkgtzg3VAAEkQtP.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 16.08.2018 21:31:02
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 21 ч. назад (https://twitter.com/OSIRISREx/status/1029835461093552129)

I'm almost ready to begin asteroid operations, so it's fitting that our final #WordOfTheWeek (https://twitter.com/hashtag/WordOfTheWeek?src=hash) is ground truth. The data I collect as I approach and survey Bennu will be used to ground truth information we have about the asteroid from telescopic observations. (https://abs.twimg.com/emoji/v2/72x72/1f52d.png)(https://abs.twimg.com/emoji/v2/72x72/1f4e1.png)

(https://pbs.twimg.com/media/DkqqNfhUUAAuGMO.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 17.08.2018 22:06:09
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 3 ч. назад (https://twitter.com/OSIRISREx/status/1030484794432401408)

Today, after a nearly two-year journey, I begin Asteroid Operations and my final approach toward Bennu! #AreWeThereYet (https://twitter.com/hashtag/AreWeThereYet?src=hash)

More on the upcoming phases of the mission: http://bit.ly/AsteroidOps  (https://t.co/2Piswc7J1v)

(https://pbs.twimg.com/media/Dk0Eau8V4AA2P2P.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 17.08.2018 22:46:30
https://www.asteroidmission.org/asteroid-operations/
Цитата
ASTEROID OPERATIONS
Asteroid Operations for the OSIRIS-REx mission begin in August 2018 - when the spacecraft will capture its first image of Bennu from a distance of about 1.2 million miles (two million km) - and continue until March 2021 - when the spacecraft begins its return trip to Earth. The spacecraft's official Arrival at Bennu is scheduled for Dec. 3, 2018, when OSIRIS-REx transitions from flying toward Bennu to operating around Bennu. While at the asteroid, OSIRIS-REx will survey and map Bennu, navigate in close proximity to the asteroid, and ultimately touch the surface for five seconds to gather a sample of the asteroid.

Asteroid Operations are divided into nine phases, which are each specifically designed to allow the mission team to build its knowledge of the asteroid, learn how to safely navigate the spacecraft in microgravity, and identify the best sample site.

(https://www.asteroidmission.org/wp-content/uploads/2018/05/Asteroid-Operations-Timeline-Dark-300x95.png) (https://www.asteroidmission.org/?attachment_id=4085#main)
 
APPROACH
Approach Phase (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Approach-Poster-6-28-18.pdf) begins on August 17, 2018, when the spacecraft is still about 1.2 million miles (two million km) away from Bennu, and it continues until the spacecraft arrives at the asteroid on December 3, 2018. The primary goals of Approach are to visually locate Bennu for the first time, survey the surrounding area for potential hazards, and collect enough imagery of Bennu for scientists to generate a detailed shape model of the asteroid, assign a coordinate system, and understand its spin state.
Название: OSIRIS-REx
Отправлено: Pirat5 от 22.08.2018 08:37:01
(https://testforum.novosti-kosmonavtiki.ru/forum/file/87107)
Название: OSIRIS-REx
Отправлено: tnt22 от 24.08.2018 01:33:58
https://www.nasa.gov/press-release/nasa-to-host-media-briefing-on-mission-to-return-asteroid-sample-to-earth
ЦитатаAug. 20, 2018
MEDIA ADVISORY M18-123

NASA to Host Media Briefing on Mission to Return Asteroid Sample to Earth

(https://www.nasa.gov/sites/default/files/styles/side_image/public/thumbnails/image/16-019_0_0.png?itok=-oGd7SvH) (https://www.nasa.gov/sites/default/files/thumbnails/image/16-019_0_0.png)
Illustration of NASA's Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft at the asteroid Bennu.
Credits: NASA


NASA will host a media teleconference at 2 p.m. EDT Friday, Aug. 24, to provide an update on upcoming activities related to the agency's first mission to return a sample of an asteroid to Earth.

The Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft, which launched on Sept. 8, 2016, started asteroid science operations last week, began imaging asteroid Bennu for the first time, and is now preparing to conduct the necessary approach maneuvers to rendezvous with Bennu on Dec. 3.

The mission represents a valuable opportunity to learn more about the origins of our solar system, the sources of water and organic molecules on Earth, and the hazards and resources in near-Earth space.

The briefing participants are:
    [/li]
  • Lori Glaze, acting director of the Planetary Science Division at NASA Headquarters
  • Dante Lauretta, OSIRIS-REx principal investigator at the University of Arizona, Tucson
  • Michael Moreau, OSIRIS-REx flight dynamics system manager at NASA's Goddard Space Flight Center
  • Sandy Freund, OSIRIS-REx mission support area manager at Lockheed Martin Space
Media who would like to ask questions by phone must send an email with their name and affiliation to Lonnie Shekhtman at lonnie.shekhtman@nasa.gov (mailto:lonnie.shekhtman@nasa.gov) by noon Aug. 24. Questions also can be submitted during the teleconference via Twitter using the hashtag #askNASA.

Audio of the teleconference will be streamed at:

https://www.nasa.gov/live
Last Updated: Aug. 20, 2018
Editor: Karen Northon
Название: OSIRIS-REx
Отправлено: tnt22 от 24.08.2018 22:37:07
https://www.nasa.gov/feature/goddard/2018/nasas-osiris-rex-begins-asteroid-operations-campaign
ЦитатаAug. 24, 2018

NASA's OSIRIS-REx Begins Asteroid Operations Campaign

After an almost two-year journey, NASA's asteroid sampling spacecraft, the  Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx), caught its first glimpse of asteroid Bennu last week and began the final approach toward its target. Kicking off the mission's asteroid operations campaign on Aug. 17, the spacecraft's PolyCam camera obtained the image from a distance of 1.4 million miles (2.2 million km).

(https://www.nasa.gov/sites/default/files/styles/full_width/public/thumbnails/image/bennu-08-17-2018-3tight.gif?itok=pIq0FAFi) (https://www.nasa.gov/sites/default/files/thumbnails/image/bennu-08-17-2018-3tight.gif)
On Aug. 17, the OSIRIS-REx spacecraft obtained the first images of its target asteroid Bennu from a distance of 1.4 million miles (2.2 million km), or almost six times the distance between the Earth and Moon. This cropped set of five images was obtained by the PolyCam camera over the course of an hour for calibration purposes and in order to assist the mission's navigation team with optical navigation efforts. Bennu is visible as a moving object against the stars in the constellation Serpens.
Credits: NASA/Goddard/University of Arizona
​OSIRIS-REx is NASA's first mission to visit a near-Earth asteroid, survey the surface, collect a sample and deliver it safely back to Earth. The spacecraft has traveled approximately 1.1 billion miles (1.8 billion km) since its Sept. 8, 2016, launch and is scheduled to arrive at Bennu on Dec. 3. 

(https://www.nasa.gov/sites/default/files/styles/side_image/public/thumbnails/image/orex_approach_hosted_yt_thumbnail_0.jpg?itok=ayUTeAik) (https://youtu.be/E4QC-irVs4E)
NASA's OSIRIS-REx asteroid sample return mission launched in 2016 and now (August, 2018 ) is entering its approach phase. OSIRIS-REx will arrive at asteroid Bennu in December, 2018. OSIRIS-REx will help unveil the mysteries of our solar system's formation.
Credits: NASA's Goddard Space Flight Center/Katrina Jackson
This video is public domain and can be downloaded from NASA's Scientific Visualization Studio. (http://svs.gsfc.nasa.gov/13051)


"Now that OSIRIS-REx is close enough to observe Bennu, the mission team will spend the next few months learning as much as possible about Bennu's size, shape, surface features, and surroundings before the spacecraft arrives at the asteroid," said Dante Lauretta, OSIRIS-REx principal investigator at the University of Arizona, Tucson. "After spending so long planning for this moment, I can't wait to see what Bennu reveals to us."

(https://www.nasa.gov/sites/default/files/styles/side_image/public/thumbnails/image/orex_approach_30s_horizontal_thumbnail_0.jpg?itok=StBL8N5H) (https://youtu.be/kcgdNg8vmho)
NASA's OSIRIS-REx asteroid sample return mission launched in 2016 and now (August, 2018 ) is entering its approach phase.
Credits: NASA's Goddard Space Flight Center/Katrina Jackson
This video is public domain and can be downloaded from NASA's Scientific Visualization Studio. (http://svs.gsfc.nasa.gov/13051)


As OSIRIS-REx approaches the asteroid, the spacecraft will use its science instruments to gather information about Bennu and prepare for arrival. The spacecraft's science payload comprises the OCAMS camera suite (PolyCam, MapCam, and SamCam), the OTES thermal spectrometer, the OVIRS visible and infrared spectrometer, the OLA laser altimeter, and the REXIS x-ray spectrometer.

During the mission's approach phase, OSIRIS-REx will:
    [/li]
  • regularly observe the area around the asteroid to search for dust plumes and natural satellites, and study Bennu's light and spectral properties;
  • execute a series of four asteroid approach maneuvers, beginning on Oct. 1, slowing the spacecraft to match Bennu's orbit around the Sun;
  • jettison the protective cover of the spacecraft's sampling arm in mid-October and subsequently extend and image the arm for the first time in flight; and
  • use OCAMS to reveal the asteroid's overall shape in late-October and begin detecting Bennu's surface features in mid-November.
After arrival at Bennu, the spacecraft will spend the first month performing flybys of Bennu's north pole, equator and south pole, at distances ranging between 11.8 and 4.4 miles (19 and 7 km) from the asteroid. These maneuvers will allow for the first direct measurement of Bennu's mass as well as close-up observations of the surface. These trajectories will also provide the mission's navigation team with experience navigating near the asteroid.

"Bennu's low gravity provides a unique challenge for the mission," said Rich Burns, OSIRIS-REx project manager at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "At roughly 0.3 miles [500 meters] in diameter, Bennu will be the smallest object that any spacecraft has ever orbited."

The spacecraft will extensively survey the asteroid before the mission team identifies two possible sample sites. Close examination of these sites will allow the team to pick one for sample collection, scheduled for early July 2020. After sample collection, the spacecraft will head back toward Earth before ejecting the Sample Return Capsule for landing in the Utah desert in Sept. 2023.

NASA's Goddard Space Flight Center provides overall mission management, systems engineering and the safety and mission assurance for OSIRIS-REx. Dante Lauretta of the University of Arizona, Tucson, is the principal investigator, and the University of Arizona also leads the science team and the mission's science observation planning and data processing. Lockheed Martin Space in Denver built the spacecraft and is providing flight operations. Goddard and KinetX Aerospace are responsible for navigating the OSIRIS-REx spacecraft. OSIRIS-REx is the third mission in NASA's New Frontiers Program. NASA's Marshall Space Flight Center in Huntsville, Alabama, manages the agency's New Frontiers Program for its Science Mission Directorate in Washington.
Nancy Neal Jones
NASA's Goddard Space Flight Center in Greenbelt, Md.


Erin Morton
University of Arizona, Tucson


Last Updated: Aug. 24, 2018
Editor: Karl Hille
Название: OSIRIS-REx
Отправлено: tnt22 от 26.08.2018 20:50:37
http://tass.ru/kosmos/5490145
ЦитатаКосмический зонд OSIRIS-REx сделал первые снимки астероида Бенну

Космос (http://tass.ru/kosmos) | 25 августа, 10:38 UTC+3

(https://cdn3.tass.ru/width/744_b12f2926/tass/m2/uploads/i/20180825/4782563.jpg)
Астероид Бенну
© NASA/Goddard/University of Arizona

ВАШИНГТОН, 25 августа. /Корр. ТАСС Ярослав Азаров/. Американский научный космический аппарат OSIRIS-REx сделал первые снимки астероида Бенну после двух лет с момента запуска. Об этом сообщило Национальное управление США по аэронавтике и исследованию космического пространства (NASA) в ходе брифинга для журналистов.

Сообщается, что первые пять снимков были сделаны 17 августа с расстояния в 2,2 млн км. Если сделать из этих снимков анимацию, то можно разглядеть пятно света, которое движется между миллионами звезд. По словам профессора Университета Аризоны Данте Лауретта, участвующего в поддержке миссии OSIRIS-REx, команда долго ждала подобного подтверждения, что зонд движется в правильном направлении.
"Я не могу передать, как это много значит для команды, - заявил он. - Я знаю, что это всего лишь точка света, но многие из нас работали многие годы, чтобы увидеть этот снимок". "В первую очередь мы узнали, что астероид именно там, где мы предполагали. Он ждет нас. Команда, занимающаяся навигацией зонда, проделала фантастическую работу!" - сказал Лауретта. Уточняется, что приблизительный бюджет научной миссии составляет $1 млрд.

OSIRIS-REx является одним из трех аппаратов, созданных экспертами NASA для запуска в дальний космос по программе New Frontiers. Этот зонд оснащен несколькими приборами, в том числе фотокамерами, спектрометрами и лазерным дальномером. Аппарат должен выйти на орбиту вокруг Солнца, по которой вращается астероид Бенну, догнать его и приступить к изучению. Затем будет предпринята операция по захвату грунта на астероиде с помощью руки-манипулятора, снабженной специальным пневматическим устройством. В общей сложности сотрудники NASA рассчитывают собрать от 60 г до 2 кг астероидного грунта.

По словам специалистов, одна из главных целей этого проекта - получение новых данных о строении и составе астероидов, представляющих потенциальную опасность для нашей планеты. Впоследствии эти сведения могут быть использованы при организации специальных миссий по предотвращению астероидной угрозы. Предполагается, что пробу грунта на астероиде аппарат возьмет в 2019-2020 годах. А возвращение на Землю спускаемой капсулы зонда намечается на сентябрь 2023 года.

Как ожидается, изучение этой пробы грунта поможет ученым лучше понять, как протекало формирование Солнечной системы. Диаметр Бенну составляет около 550 м, он вращается по эллиптической орбите вокруг Солнца. Астрономы относят его к Аполлонам - астероидам, орбиты которых пересекают орбиту Земли. Вероятность столкновения с ним составляет один к 4000. Его падение на Землю было бы эквивалентно взрыву мощностью 2,7 Мт в тротиловом эквиваленте.
Название: OSIRIS-REx
Отправлено: tnt22 от 27.08.2018 07:37:23
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 25 авг. (https://twitter.com/OSIRISREx/status/1033355881964920832)

In just 100 days, I'm scheduled to arrive at Bennu and begin studying and mapping the #asteroid (https://twitter.com/hashtag/asteroid?src=hash) up close! Between now and then, Bennu will transform from a dot in the distance into a whole new world. (https://abs.twimg.com/emoji/v2/72x72/1f6f0.png) (https://abs.twimg.com/emoji/v2/72x72/1f51c.png) (https://abs.twimg.com/emoji/v2/72x72/2604.png) Here's my current itinerary for the journey: http://bit.ly/AsteroidOps  (https://t.co/2Piswc7J1v)

(https://pbs.twimg.com/media/Dlc0dvOVsAYehRW.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 27.08.2018 09:08:49
ЦитатаOSIRIS-REx Approach Trailer

NASA Goddard (https://www.youtube.com/channel/UCAY-SMFNfynqz1bdoaV8BeQ)

Опубликовано: 24 авг. 2018 г.

NASA's OSIRIS-REx asteroid sample return mission launched in 2016 and now (August, 2018 ) is entering its approach phase. OSIRIS-REx will arrive at asteroid Bennu in December, 2018. OSIRIS-REx will help unveil the mysteries of our solar system's formation.
https://www.youtube.com/watch?v=kcgdNg8vmhohttps://www.youtube.com/watch?v=kcgdNg8vmho (https://www.youtube.com/watch?v=kcgdNg8vmho) (0:32)
Название: OSIRIS-REx
Отправлено: tnt22 от 27.08.2018 09:12:48
ЦитатаNASA's OSIRIS-REx Approaches Asteroid Bennu

NASA Goddard (https://www.youtube.com/channel/UCAY-SMFNfynqz1bdoaV8BeQ)

Опубликовано: 24 авг. 2018 г.

NASA's OSIRIS-REx asteroid sample return mission launched in 2016 and now (August, 2018 ) is entering its approach phase. OSIRIS-REx will arrive at asteroid Bennu in December, 2018. OSIRIS-REx will help unveil the mysteries of our solar system's formation.
https://www.youtube.com/watch?v=E4QC-irVs4Ehttps://www.youtube.com/watch?v=E4QC-irVs4E (https://www.youtube.com/watch?v=E4QC-irVs4E) (5:19)
Название: OSIRIS-REx
Отправлено: tnt22 от 27.08.2018 19:33:49
Цитата(https://pbs.twimg.com/profile_images/900017986215436289/yjd89SG3_bigger.jpg)NASA Goddard‏Подлинная учетная запись @NASAGoddard (https://twitter.com/NASAGoddard) 3 ч. назад (https://twitter.com/NASAGoddard/status/1034070015358775297)

A curious effect of sunlight could change the orbit of asteroids. OSIRIS-REx will measure this, the Yarkovsky effect, from close-up to help scientists predict the movement of Bennu and other asteroids.

https://video.twimg.com/tweet_video/DlnAFPVWwAEOJWN.mp4 (https://video.twimg.com/tweet_video/DlnAFPVWwAEOJWN.mp4)
(video (https://video.twimg.com/tweet_video/DlnAFPVWwAEOJWN.mp4) 0:02)
Название: OSIRIS-REx
Отправлено: tnt22 от 28.08.2018 11:33:57
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 13 ч. назад (https://twitter.com/OSIRISREx/status/1034166798973730816)

I'm less than 2 million kilometers (1.2 million miles) from #asteroid (https://twitter.com/hashtag/asteroid?src=hash) Bennu! It now takes almost 13 minutes round-trip for me to communicate with the team on the ground. (https://abs.twimg.com/emoji/v2/72x72/1f6f0.png) (https://abs.twimg.com/emoji/v2/72x72/2194.png) (https://abs.twimg.com/emoji/v2/72x72/1f4e1.png) More about my progress on the journey #ToBennuAndBack (https://twitter.com/hashtag/ToBennuAndBack?src=hash): http://bit.ly/WhereIsOREX  (https://t.co/rACre4nDe4)

(https://pbs.twimg.com/media/DlnxBNiU8AAZCE9.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 29.08.2018 21:43:32
https://spaceflightnow.com/2018/08/29/two-nasa-probes-catch-first-glimpses-of-primordial-targets/
ЦитатаTwo NASA probes catch first glimpses of primordial targets
August 29, 2018 (https://spaceflightnow.com/2018/08/) | Stephen Clark (https://spaceflightnow.com/author/stephen-clark/)

(https://mk0spaceflightnoa02a.kinstacdn.com/wp-content/uploads/2018/08/bennu-08-17-2018-3tight.gif)
On Aug. 17, the OSIRIS-REx spacecraft obtained the first images of its target asteroid Bennu fr om a distance of 1.4 million miles (2.2 million km), or almost six times the distance between the Earth and Moon. This cropped set of five images was obtained by the PolyCam camera over the course of an hour for calibration purposes and in order to assist the mission's navigation team with optical navigation efforts. Bennu is visible as a moving object against the stars in the constellation Serpens.
Credits: NASA/Goddard/University of Arizona


Two NASA spacecraft -- the OSIRIS-REx asteroid sample return mission and the New Horizons probe at the edge of the solar system -- have captured their first looks at their targets as they approach a pair of primordial relics for the first time.

The imagery will improve in the coming months, before each mission's target finally becomes fully resolved late this year.

Launched in September 2016, OSIRIS-REx is approaching asteroid Bennu, a dark, carbon-rich world measuring approximately 1,640 feet (500 meters) in diameter. The New Horizons spacecraft, on an extended mission after flying by Pluto in July 2015, has its sights set on a distant, frozen world nicknamed Ultima Thule nearly 4 billion miles (more than 6 billion kilometers) fr om Earth.

Nearly two years after its launch, the OSIRIS-REx spacecraft has commenced its final approach to asteroid Bennu. The probe aimed its long-range imager toward the asteroid and captured a series of pictures Aug. 17 fr om a distance of around 1.4 million miles (2.2 million kilometers), revealing Bennu as a faint dot moving against a field of background stars.

"I know Bennu is only a point of light here, but many of us have been working for years and years and years to get his image down," said Dante Lauretta, principal investigator on the OSIRIS-REx mission fr om the University of Arizona.

The imagery taken Aug. 17 showed OSIRIS-REx was right on track to arrive at Bennu on Dec. 3, when it will begin a series of close passes over the asteroid to map the object for the first time, before entering orbit around Bennu on Dec. 31.
"There was a lot of good news in this image for us," Lauretta told reporters in a conference call Friday. "First of all, the asteroid is right wh ere we thought it was, so it's there and it's waiting for us. The spacecraft was also wh ere it was supposed to be, and pointing in the (right) direction."

OSIRIS-REx has worked flawlessly since leaving Earth in 2016, officials said, successfully making a brief return to its home planet last year for a gravity assist flyby that re-routed its orbit around the sun toward Bennu.

Bennu is currently about as bright as a 13th magnitude star, far too dim to be visible with the naked eye -- if someone was riding along with OSIRIS-REx. But the asteroid will get brighter as the spacecraft makes its approach, finally filling OSIRIS-REx's camera view in late November and early December.

OSIRIS-REx stands for the Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer, a $1 billion mission designed to bring back to Earth at least 2 ounces (60 grams), and potentially more than a pound, of rock specimens from Bennu.

"First and foremost, we are an origins mission," Lauretta said. "We are seeking to return samples of a carbonaceous asteroid that we believe dates back to the formation of our solar system."

(https://mk0spaceflightnoa02a.kinstacdn.com/wp-content/uploads/2018/01/Bennu-topo.jpg)
Simulated cratering and topography are overlaid on radar imagery of asteroid Bennu. Credit: NASA/GSFC/UA/Mike Nolan-Arecibo Observatory/Bob Gaskell-Planetary Science Institute

When the solar system formed more than 4.5 billion years ago, chunks of rock and ice collided as they circled the sun like the balls on a billiard table, eventually building up planets. The leftovers became asteroids and comets, and scientists believe Bennu still harbors the basic organic molecules that were present in the early solar solar system, the stuff that may have helped seed life.

The spacecraft carries three cameras -- one for long-range viewing, a color camera for mapping, and another imager to take pictures as OSIRIS-REx collects samples from the asteroid's surface. The rest of OSIRIS-REx's suite of science instruments includes a thermal emission spectrometer to detect heat coming from the asteroid, a visible infrared spectrometer to locate minerals and organic materials, a laser altimeter provided by the Canadian Space Agency to create topographic maps, and a student-built X-ray spectrometer to identify individual chemical elements present on the asteroid.

As the craft zeroes in on Bennu, scientists will use its cameras to survey the region around the asteroid for debris, which could pose a hazard to OSIRIS-REx when it moves closer. So far, ground-based observations of Bennu using a high-power radar have discovered no such debris, raising hopes that the corridor toward the asteroid is safe.

In October, controllers at Lockheed Martin, which built OSIRIS-REx, will unlatch the probe's robotic arm from its launch restraint for the first time. Over several days, the ground team will command the arm to bend its joints and jettison a launch cover over the sample collection mechanism, which will release compressed air during a touch-and-go maneuver to force gravel and surface material into an on-board chamber for return to Earth.

OSIRIS-REx is closing its range toward Bennu at a relative velocity of around 1,100 mph, or nearly 1,800 kilometers per hour, according to Michael Moreau, OSIRIS-REx flight dynamics system manager at NASA's Goddard Space Flight Center.

A braking burn using OSIRIS-REx's liquid-fueled propulsion system in mid-October will slow the craft's approach to just 11 mph (18 kilometers per hour).

"Ultimately, our last approach maneuver -- AAM-4 -- on Nov. 12 will adjust our approach to target arrival at a position that's 20 kilometers (12 miles) away from Bennu on Dec. 3," Moreau said. "This event will signify our official rendezvous with Bennu."

(https://mk0spaceflightnoa02a.kinstacdn.com/wp-content/uploads/2018/08/Small_Bodies_Relative_Sizes_print.jpg)
This mosaic compares the size of asteroid Bennu, to scale, with other asteroids and comets visited by spacecraft. Credit: NASA/University of Arizona/ESA/JAXA

Navigators will analyze imagery beamed back from OSIRIS-REx to precisely locate the asteroid and fine-tune the spacecraft's rendezvous.

OSIRIS-REx will follow a pre-planned trajectory, with the help of multiple course correction burns, over the poles of Bennu in December, allowing scientists to precisely measure the asteroid's mass for the first time. The data will help scientists and navigators better understand Bennu's tenuous gravity field, critical information needed to chart OSIRIS-REx's orbit around the asteroid.

Bennu's gravity will ensnare OSIRIS-REx into orbit Dec. 31, and the asteroid will become the smallest planetary body ever orbited by a spacecraft. Due to the asteroid's weak gravity, OSIRIS-REx will move around Bennu at a speed of just one-tenth of a mile per hour, or about 5 centimeters per second.

Orbital speeds are determined by the gravitational pull of the parent planet or star. For comparison, objects in low Earth orbit have to travel at around 17,500 mph (7.8 kilometers per second) to avoid falling back into the atmosphere.

"It's Bennu's size and small mass that make the navigation challenges on this mission unprecedented, really," Moreau said.

Comet 67P/Churyumov-Gerasimenko, which was orbited by the European Space Agency's Rosetta spacecraft from 2014 through 2016, is between five and 10 times larger than Bennu, depending on how you measure. Asteroid Ryugu, wh ere Japan's Hayabusa 2 spacecraft is currently exploring, is nearly twice the size of Bennu, and Hayabusa 2 will not enter orbit around it.

OSIRIS-REx will survey Bennu for more than a year before attempting a touch-and-go descent in July 2020 to snag samples from the asteroid. The spacecraft will depart Bennu and head back to Earth, releasing its sample carrier for re-entry and landing in Utah in September 2023.

Scientists will take the samples to an ultra-clean facility at NASA's Johnson Space Center in Houston for detailed analysis.

New Horizons gets first look at Ultima Thule
When it zips by Ultima Thule at the outer frontier of the solar system Jan. 1, NASA's New Horizons spacecraft will catch a much more fleeting glimpse of its target than the years-long campaign planned for OSIRIS-REx.

Like Bennu, Ultima Thule -- officially known as 2014 MU69 -- is a leftover from the solar system's chaotic formation. Located in the Kuiper Belt, a ring of relatively small proto-planets beyond the orbit of Neptune, Ultima Thule will become the most distant object ever visited when New Horizons arrives on New Year's Day.

More than three years past its historic encounter with Pluto, New Horizons spotted Ultima Thule with its telescopic camera Aug. 16, earlier than predicted.

(https://mk0spaceflightnoa02a.kinstacdn.com/wp-content/uploads/2018/08/NH_ultima_thule_first_detection_v3.jpg)
The figure on the left is a composite image produced by adding 48 different exposures from the News Horizons Long Range Reconnaissance Imager (LORRI), each with an exposure time of 29.967 seconds, taken on Aug. 16, 2018. The predicted position of the Kuiper Belt object nicknamed Ultima Thule is at the center of the yellow box, and is indicated by the yellow crosshairs, just above and left of a nearby star that is approximately 17 times brighter than Ultima. At right is a magnified view of the region in the yellow box, after subtraction of a background star field "template" taken by LORRI in September 2017 before it could detect the object itself. Ultima is clearly detected in this star-subtracted image and is very close to wh ere scientists predicted, indicating to the team that New Horizons is being targeted in the right direction. Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute

"Our team worked hard to determine if Ultima was detected by LORRI at such a great distance, and the result is a clear yes," said Alan Stern, New Horizons's principal investigator from the Southwest Research Institute in Boulder, Colorado. "We now have Ultima in our sights from much farther out than once thought possible. We are on Ultima's doorstep, and an amazing exploration awaits!"

Astronomers observing Ultima Thule from the ground using the object's occultation of stars have concluded the mini-world likely has an elongated shape, and it may consist of two or three separate components, including a small moonlet orbiting nearby. Scientists are still crunching data from another stellar occultation observation earlier this month in hopes of narrowing down Ultima Thule's shape and size, which is estimated to be around 20 miles (30 kilometers) across, assuming it is a single object.

Discovered in 2014 by the Hubble Space Telescope, Ultima Thule is still incredibly faint in New Horizons's viewfinder, and scientists had to analyze 48 individual images to locate the target amid a field of brighter stars. New Horizons is still around 100 million miles (160 million kilometers) from Ultima Thule, but is closing its distance by nearly 800,000 miles (1.3 million kilometers) each day.

The high-speed flyby with Ultima Thule, scheduled for 12:33 a.m. EST (0533 GMT) on New Year's Day, will give New Horizons just one chance to record imagery of the faraway world, a billion miles beyond Pluto. New Horizons does not have the fuel to slow down and linger in Ultima Thule's vicinity.

The newest images from New Horizons are the farthest ever taken, breaking a record set NASA's Voyager 1 spacecraft in 1990, when that probe turned back toward the inner solar system to take the famous "Pale Blue Dot" image of Earth.

"The image field is extremely rich with background stars, which makes it difficult to detect faint objects," said Hal Weaver, New Horizons project scientist and LORRI principal investigator from the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland. "It really is like finding a needle in a haystack. In these first images, Ultima appears only as a bump on the side of a background star that's roughly 17 times brighter, but Ultima will be getting brighter - and easier to see - as the spacecraft gets closer."
Название: OSIRIS-REx
Отправлено: tnt22 от 06.09.2018 00:19:11
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 4 авг. назад (https://twitter.com/OSIRISREx/status/1037048964527284224)

Woot! I'm now less than one million miles (1.4 million kilometers) away from #asteroid (https://twitter.com/hashtag/asteroid?src=hash) Bennu.
#WhereIsOSIRISREx (https://twitter.com/hashtag/WhereIsOSIRISREx?src=hash)

More on my progress: http://bit.ly/WhereIsOREX  (https://t.co/rACre4nDe4)

(https://pbs.twimg.com/media/DmRGAgZVsAE4lMT.jpg)
https://www.asteroidmission.org/wp-content/uploads/2018/09/Digital-Readout-9-3-18-768x262.png
(https://www.asteroidmission.org/wp-content/uploads/2018/09/Digital-Readout-9-3-18-768x262.png)
Название: OSIRIS-REx
Отправлено: tnt22 от 11.09.2018 21:37:10
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 3 ч. назад (https://twitter.com/OSIRISREx/status/1039542910541123585)

Today, I begin scanning the area around asteroid Bennu for dust plumes! #SeizeTheData (https://twitter.com/hashtag/SeizeTheData?src=hash) (https://abs.twimg.com/emoji/v2/72x72/2604.png) (https://abs.twimg.com/emoji/v2/72x72/1f440.png)

More on what I'll be up to through the rest of 2018 and beyond: http://bit.ly/AsteroidOps  (https://t.co/2Piswc7J1v)

(https://pbs.twimg.com/media/Dm0uE4aUUAE34te.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 11.09.2018 21:40:22
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 53 мин. назад (https://twitter.com/OSIRISREx/status/1039570881607958528)

This week, my range to #asteroid (https://twitter.com/hashtag/asteroid?src=hash) Bennu will dip below the 1 million kilometer mark! (https://abs.twimg.com/emoji/v2/72x72/1f6f0.png) (https://abs.twimg.com/emoji/v2/72x72/1f51c.png) (https://abs.twimg.com/emoji/v2/72x72/2604.png) #WhereIsOSIRISREx (https://twitter.com/hashtag/WhereIsOSIRISREx?src=hash) More on my progress: http://bit.ly/WhereIsOREX  (https://t.co/rACre4nDe4)

(https://pbs.twimg.com/media/Dm1J4b7V4AA73yd.jpg)
https://www.asteroidmission.org/wp-content/uploads/2018/09/Digital-Readout-9-10-18-768x262.png
(https://www.asteroidmission.org/wp-content/uploads/2018/09/Digital-Readout-9-10-18-768x262.png)
Название: OSIRIS-REx
Отправлено: tnt22 от 17.09.2018 00:27:08
Цитата(https://pbs.twimg.com/profile_images/424297760351739904/vqbuG07p_bigger.png)REXIS‏ @REXIS_MIT (https://twitter.com/REXIS_MIT) 15 сент. (https://twitter.com/REXIS_MIT/status/1041025699795140608)

We're open for business! Our radiation cover is open and we're ready for some real data! Stay tuned for more news on the REXIS first light!
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 14 сент. (https://twitter.com/OSIRISREx/status/1040737093285109760)

Fire Frangibolt! (https://abs.twimg.com/emoji/v2/72x72/1f4a5.png)(https://abs.twimg.com/emoji/v2/72x72/1f529.png) Roger that.

This morning the Frangibolt on the flight cover of REXIS - my student-built x-ray spectrometer that will map elements on Bennu's surface - fired as planned and opened the instrument's cover.

@REXIS_MIT (https://twitter.com/REXIS_MIT) now has a clear view of space!

(https://pbs.twimg.com/media/DnFwF3UU8AA2rZF.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 18.09.2018 20:59:14
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 1 ч. назад (https://twitter.com/OSIRISREx/status/1042088972908879872)

Milestone alert: I now have less than 200 million km (123 million miles) to travel before my rendezvous with #asteroid (https://twitter.com/hashtag/asteroid?src=hash) Bennu! #WhereIsOSIRISREx (https://twitter.com/hashtag/WhereIsOSIRISREx?src=hash) More about my progress on the journey: http://bit.ly/WhereIsOREX  (https://t.co/rACre4nDe4)

(https://pbs.twimg.com/media/DnY4u8lUwAAILnp.jpg)
https://www.asteroidmission.org/wp-content/uploads/2018/09/Digital-Readout-9-17-18-768x262.png
(https://www.asteroidmission.org/wp-content/uploads/2018/09/Digital-Readout-9-17-18-768x262.png)
Название: OSIRIS-REx
Отправлено: tnt22 от 24.09.2018 21:53:24
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 6 мин. назад (https://twitter.com/OSIRISREx/status/1044296529207472128)

Hellloooo, Earth! (https://abs.twimg.com/emoji/v2/72x72/1f6f0.png) (https://abs.twimg.com/emoji/v2/72x72/2194.png) (https://abs.twimg.com/emoji/v2/72x72/1f4e1.png) At my current distance -- just under 126 million km (78 million miles) -- it takes 14 minutes round-trip to communicate with the team on the ground. More on my progress #ToBennuAndBack (https://twitter.com/hashtag/ToBennuAndBack?src=hash): http://bit.ly/WhereIsOREX  (https://t.co/rACre4nDe4)

(https://pbs.twimg.com/media/Dn3-CAqUcAAMlpl.jpg)
https://www.asteroidmission.org/wp-content/uploads/2018/09/Orbit-Diagram-9-24-18-768x611.png
(https://www.asteroidmission.org/wp-content/uploads/2018/09/Orbit-Diagram-9-24-18-768x611.png)
https://www.asteroidmission.org/wp-content/uploads/2018/09/Digital-Readout-9-24-18-768x262.png
(https://www.asteroidmission.org/wp-content/uploads/2018/09/Digital-Readout-9-24-18-768x262.png)
Название: OSIRIS-REx
Отправлено: vogel от 28.09.2018 19:46:03
Цитата(https://www.asteroidmission.org/wp-content/uploads/2018/09/MapCamDustSearch-1.jpg)
MapCam Images Bennu During Dust Plume Search
This MapCam image of the space surrounding asteroid Bennu was taken on Sept. 12, 2018, during the OSIRIS-REx mission's Dust Plume Search observation campaign. Bennu, circled in green, is approximately 621 thousand miles (1 million km) from the spacecraft. The image was created by coadding 64 ten-second exposures.
The mission team conducted the search to determine whether dust and gas plumes could be detected originating from Bennu's surface. If present, these plumes could present a hazard to the spacecraft during the asteroid proximity operations, as well as provide clues to possible cometary activity on the asteroid. The images from the search did not indicate any dust from Bennu. A second dust plume search will be conducted later in the mission while the spacecraft is operating around Bennu.
Date Taken: Sept. 12, 2018
Instrument Used: OCAMS (MapCam)
Credit: NASA/Goddard/University of Arizona

https://www.asteroidmission.org/mapcamdustsearch-2/
Название: OSIRIS-REx
Отправлено: tnt22 от 01.10.2018 20:43:34
Цитата(https://pbs.twimg.com/profile_images/880089442832138241/cqqqKUmb_bigger.jpg)Dante Lauretta‏ @DSLauretta (https://twitter.com/DSLauretta) 44 мин. назад (https://twitter.com/DSLauretta/status/1046806661262790656)

The @OSIRISREx (https://twitter.com/OSIRISREx) spacecraft will execute Asteroid Approach Maneuver 1 today. Total delta-V = 351 m/s (slowing us down by 785 miles per hour)!
Название: OSIRIS-REx
Отправлено: tnt22 от 01.10.2018 21:14:30
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 8 мин. назад (https://twitter.com/OSIRISREx/status/1046823564035350529)

Today I'm executing Asteroid Approach Maneuver-1, which is the first in a series of braking maneuvers that will slow my speed as I approach asteroid Bennu. My cruising speed before AAM-1 is about 1,100 miles per hour (490 meters per second).
http://bit.ly/WhereIsOREX  (https://t.co/rACre4nDe4)

(https://pbs.twimg.com/media/DocO9DPUYAEiqCQ.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 01.10.2018 22:39:26
https://www.asteroidmission.org/?latest-news=nasas-osiris-rex-executes-first-asteroid-approach-maneuver
Цитата
NASA's OSIRIS-REx Executes First Asteroid Approach Maneuver
October 1, 2018 - NASA's OSIRIS-REx spacecraft executed its first Asteroid Approach Maneuver (AAM-1) today putting it on course for its scheduled arrival at the asteroid Bennu in December.

(https://www.asteroidmission.org/wp-content/uploads/2016/12/DSM-1.png) (https://www.asteroidmission.org/?attachment_id=1817#main)
Artist's conception of NASA's OSIRIS-REx spacecraft during a burn of its main engine. Credit: University of Arizona

The spacecraft's main engine thrusters fired in a braking maneuver designed to slow the spacecraft's speed relative to Bennu from approximately 1,100 mph (491 m/sec) to 313 mph (140 m/sec). The mission team will continue to examine telemetry and tracking data as they become available and will have more information on the results of the maneuver over the next week.

During the next six weeks, the OSIRIS-REx spacecraft will continue executing the series of asteroid approach maneuvers designed to fly the spacecraft through a precise corridor during its final slow approach to Bennu. The last of these, AAM-4, scheduled for November 12, will adjust the spacecraft's trajectory to arrive at a position 12 miles (20 km) from Bennu on December 3. After arrival, the spacecraft will initiate asteroid proximity operations by performing a series of fly-bys over Bennu's poles and equator.
Название: OSIRIS-REx
Отправлено: tnt22 от 01.10.2018 23:43:18
Цитата(https://pbs.twimg.com/profile_images/880089442832138241/cqqqKUmb_bigger.jpg)Dante Lauretta‏ @DSLauretta (https://twitter.com/DSLauretta) 1 ч. назад (https://twitter.com/DSLauretta/status/1046840711683792897)

Asteroid Approach Maneuver 1 is a success! It was a 351 m/s burn of 11 min 15 s on the main engines. One more main engine burn remains for @OSIRISREx (https://twitter.com/OSIRISREx) in its Approach phase, on Oct 15, followed by 2 smaller burns on the TCM thrusters. This was a major mission milestone!
Название: OSIRIS-REx
Отправлено: tnt22 от 09.10.2018 05:20:58
https://www.asteroidmission.org/polycam_opnav_2018-annotated-final/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2018/10/PolyCam_OpNav_2018-Annotated-Final.gif)

Bennu Brightening as OSIRIS-REx Approaches

This processed and cropped set of images shows Bennu (in the center of the frame) from the perspective of the OSIRIS-REx spacecraft as it approaches the asteroid. During the period between August 17 and October 1, the spacecraft's PolyCam imager obtained this series of 20 four-second exposures every Monday, Wednesday, and Friday as part of the mission's optical navigation campaign.

From the first to the last image, the spacecraft's range to Bennu decreased from 2.2 million km to 192,000 km, and Bennu brightened from approximately magnitude 13 to magnitude 8.8 from the spacecraft's perspective.

Date Taken: Aug. 17 - Oct. 1, 2018

Instrument Used: PolyCam

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 09.10.2018 05:23:52
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 4 ч. назад (https://twitter.com/OSIRISREx/status/1049419843638718464)

With a little over 55 days left until my scheduled arrival at Bennu, my range to the #asteroid (https://twitter.com/hashtag/asteroid?src=hash) is now less than 100,000 km (62,000 miles). #WhereIsOSIRISREx (https://twitter.com/hashtag/WhereIsOSIRISREx?src=hash)

More on my recent activities: http://bit.ly/WhereIsOREX  (https://t.co/rACre4nDe4)

(https://pbs.twimg.com/media/DpBGh59UcAAKK90.jpg)
https://www.asteroidmission.org/wp-content/uploads/2018/10/Orbit-Diagram-10-08-18-768x611.png
(https://www.asteroidmission.org/wp-content/uploads/2018/10/Orbit-Diagram-10-08-18-768x611.png)

https://www.asteroidmission.org/wp-content/uploads/2018/10/Digital-Readout-10-08-18-768x262.png
(https://www.asteroidmission.org/wp-content/uploads/2018/10/Digital-Readout-10-08-18-768x262.png)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.10.2018 00:22:36
ЦитатаLIVE - "10 minutes about OSIRIS-REx mission"

Canadian Space Agency (https://www.youtube.com/channel/UCdNtqpHlU1pCaVy2wlzxHKQ)

Трансляция началась 3 часа назад

2018-10-09 - For World Space Week, we will present you "10 minutes about OSIRIS-REx mission" with CSA expert Tim Haltigin.
https://www.youtube.com/watch?v=zrbKDzoeaM8https://www.youtube.com/watch?v=zrbKDzoeaM8 (https://www.youtube.com/watch?v=zrbKDzoeaM8) (13:14)
Название: OSIRIS-REx
Отправлено: tnt22 от 15.10.2018 22:49:59
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 3 ч. назад (https://twitter.com/OSIRISREx/status/1051876877529300992)

Almost ready for my second Asteroid Approach Maneuver (AAM-2)! Today is the second time I'll put on the brakes as I approach #asteroid (https://twitter.com/hashtag/asteroid?src=hash) Bennu, slowing my speed from about 313 to about 11.8 miles per hour.
#WeBrakeForAsteroids (https://twitter.com/hashtag/WeBrakeForAsteroids?src=hash)
Название: OSIRIS-REx
Отправлено: tnt22 от 15.10.2018 22:57:52
https://www.asteroidmission.org/?latest-news=nasas-osiris-rex-executes-second-asteroid-approach-maneuver
Цитата
NASA's OSIRIS-REx Executes Second Asteroid Approach Maneuver

October 15, 2018 - NASA's OSIRIS-REx spacecraft executed its second Asteroid Approach Maneuver (AAM-2) today. The spacecraft's main engine thrusters fired in a braking maneuver designed to slow the spacecraft's speed relative to Bennu from 315 mph (141 m/sec) to 11.8 mph (5.2 m/sec). Likewise, the spacecraft's approach speed dropped from nearly 7,580 miles (12,200 km) to 280 miles (450 km) per day.

(https://www.asteroidmission.org/wp-content/uploads/2016/12/DSM-1-1024x577.png) (https://www.asteroidmission.org/?attachment_id=1817#main)
Artist's conception of NASA's OSIRIS-REx spacecraft during a burn of its main engine. Credit: University of Arizona

The mission team will continue to examine telemetry and tracking data and will have more information over the next week. This burn marked the last planned use of the spacecraft's main engines prior to OSIRIS-REx's departure from Bennu in March 2021.

The OSIRIS-REx spacecraft is in the midst of a six-week series of maneuvers designed to fly the spacecraft through a precise corridor toward Bennu. AAM-1, which executed on Oct. 1, slowed the spacecraft by 785.831 mph (351.298 m/sec) and consumed 532.4 pounds (241.5 kilograms) of fuel. AAM-3 is schedule for October 29. The last of the burns, AAM-4, is scheduled for November 12 and will adjust the spacecraft's trajectory to arrive at a position 12 miles (20 km) from Bennu on December 3. After arrival, the spacecraft will perform a series of fly-bys over Bennu's poles and equator.
Название: OSIRIS-REx
Отправлено: tnt22 от 18.10.2018 19:35:07
ЦитатаOSIRIS REx Approach Media Telecon

NASA Video (https://www.youtube.com/channel/UC_aP7p621ATY_yAa8jMqUVA)

Опубликовано: 18 окт. 2018 г.
https://www.youtube.com/watch?v=5crcyGEElochttps://www.youtube.com/watch?v=5crcyGEEloc (https://www.youtube.com/watch?v=5crcyGEEloc) (55:46)
Название: OSIRIS-REx
Отправлено: tnt22 от 19.10.2018 12:27:03
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 16 ч. назад (https://twitter.com/OSIRISREx/status/1052968422932283392)

1, 2, 3, Bennu! Earlier this week, I captured these images of my favorite asteroid growing ever larger -- from about 1 pixel to nearly 4 pixels in PolyCam's field of view -- as I continue to approach Bennu.

More details: http://bit.ly/2PI0Eky  (https://t.co/C5MRW4VzIf)

https://video.twimg.com/tweet_video/Dpzj6-mU4AEpMrT.mp4 (https://video.twimg.com/tweet_video/Dpzj6-mU4AEpMrT.mp4)
(video (https://video.twimg.com/tweet_video/Dpzj6-mU4AEpMrT.mp4) 0:02)
https://www.asteroidmission.org/bennu-oct-2018-pixel-zoom/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2018/10/Bennu-Oct-2018-Pixel-Zoom.gif)

1, 2, 3 Bennu!

This set of PolyCam images shows Bennu getting larger in the camera's field of view as the OSIRIS-REx spacecraft continues its approach toward the asteroid. The images represent Bennu at 1.09 pixels, 1.71 pixels and 3.75 pixels, and were obtained on Oct. 13, 14 and 15, respectively. From the first to the last image, OSIRIS-REx's range to Bennu decreased from around 20,720 miles (33,350 km) to around 6,060 miles (9,750 km). The images are cropped and processed.

Image 1:
Date and Time: 10/13/2018, 09:23 UTC
Range to Target: 33,360 km
Phase Angle: 61.5°
Bennu's Distance from the Sun: 1.104 AU
Width of Target: 1.093 pixels

Image 2:
Date and Time: 10/14/2018, 09:23 UTC
Range to Target: 21,347 km
Phase Angle: 58.3°
Bennu's Distance from the Sun: 1.101 AU
Width of Target: 1.71 pixels

Image 3:
Date and Time: 10/15/2018, 09:23 UTC
Range to Target: 9,736 km
Phase Angle: 45.5°
Bennu's Distance from the Sun: 1.097 AU
Width of Target: 3.75 pixels

Date Taken: Oct. 13 -15, 2018

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 19.10.2018 12:38:35
ЦитатаPolyCam Natural Satellite Search Pattern

OSIRIS-REx Mission (https://www.youtube.com/channel/UCgesBEUkT8iyGssfuJm-Gnw)

Дата загрузки: 17 окт. 2018 г.

A simulation showing one of the planned image mosaics that will be captured by OSIRIS-REx's PolyCam camera during the spacecraft's search for natural satellites (small moons) around Bennu in Fall 2018. The asteroid is represented by the green dot in the center. The blue square indicates the camera's field of view, and the large green circle represents the target area to be imaged around the asteroid.
https://www.youtube.com/watch?v=e3ffcRPlIokhttps://www.youtube.com/watch?v=e3ffcRPlIok (https://www.youtube.com/watch?v=e3ffcRPlIok) (1:53)
Название: OSIRIS-REx
Отправлено: tnt22 от 19.10.2018 12:40:34
https://www.asteroidmission.org/?latest-news=safety-science-osiris-rex-lookout-hazards-approach
Цитата
Safety & Science: OSIRIS-REx on the Lookout for Hazards During Approach
By Christine Hoekenga
(https://www.asteroidmission.org/wp-content/uploads/2018/10/Dust-Plume-Search-300x201.png) (https://www.asteroidmission.org/?attachment_id=10084#main)
An artist's concept of OSIRIS-REx searching for dust plumes in the vicinity of asteroid Bennu. Credit: University of Arizona

October 17, 2018 - On Sept. 12, OSIRIS-REx pointed its medium-range science camera, MapCam, toward asteroid Bennu 621,000 miles (one million kilometers) in the distance. Slewing gently side to side and up and down as it captured 64 images, the spacecraft scanned the area around the asteroid in a carefully choreographed pattern. The day before, it had collected a similar mosaic of images with its long-range science camera, PolyCam.

Over the next few days, scientists on the ground pored over the images, looking for any signs of dust in the vicinity of the asteroid, which could present a hazard to the spacecraft as it approaches. Ultimately, they determined that the coast is clear - for now.

But OSIRIS-REx will look for natural satellites (small moons) and conduct another search for dust plumes when the spacecraft is closer to Bennu.
(https://www.asteroidmission.org/wp-content/uploads/2018/09/MapCamDustSearch-1-297x300.jpg) (https://www.asteroidmission.org/?attachment_id=9173#main)
No dust was detected in this MapCam image of the area around Bennu (circled in green) taken Sept. 12, 2018 during OSIRIS-REx's first Dust Plume Search. Credit: NASA/Goddard/University of Arizona

While comets, with their characteristic tails and comas, are known for releasing plumes of volatile materials like ice, gas, and dust, this behavior has also been observed in some asteroids. If dust had been visible in the images collected in mid-September, it would have suggested that Bennu had comet-like plume activity in the recent past, probably in the weeks or months before OSIRIS-REx conducted its first dust search.

Although OSIRIS-REx is designed to withstand the rigors of spaceflight and the occasional collision with stray particles, flying through a dust plume would pose a risk to the spacecraft's instruments and solar panels. If the mission team had identified plume activity in the images, they had contingency plans to execute a braking maneuver, placing the spacecraft at a safe distance so that the dust activity could be studied further.

The existence of dust plumes would suggest that Bennu has active deposits of ice or other volatiles. Finding frozen water on the asteroid would be an exciting result for mission scientists who are in part studying Bennu to understand whether asteroids could have been the delivery mechanism for the water and organic materials needed to seed life on Earth billions of years ago. Plumes would also have implications for where OSIRIS-REx could safely collect a sample of material fr om Bennu's surface in 2020 - and what types of material would likely be in that sample.

(https://www.asteroidmission.org/wp-content/uploads/2018/10/Comet_on_27_March_2016_NavCamCrop-300x235.jpg) (https://www.asteroidmission.org/?attachment_id=10086#main)
A view of Comet 67P backlit by the Sun makes plumes coming off the comet's surface highly visible. Credit: ESA/Rosetta/NAVCAM

"We probably wouldn't want to sample too near a vent for safety reasons," says Carl Hergenrother, the OSIRIS-REx Astronomy Working Group Lead, who helped plan the hazard searches. "But it would be interesting since plumes mean that there could be subsurface volatile material nearby."

OSIRIS-REx's second dust plume search, scheduled for two days in Spring 2019 when the spacecraft will be about 3.1 miles (five kilometers) from Bennu, will look for active dust plumes coming off Bennu's surface. For those observations, the spacecraft will be positioned between the Sun and the asteroid (at a high phase angle (https://www.asteroidmission.org/galleries/word-of-the-week/wotw-phase-angle/#main)) so that Bennu is backlit and any dust plumes are more visible. Some of the 13 mosaics that the spacecraft captures will include offset images of the asteroid so that any jets coming from the surface are easier to see against the dark backdrop of space.

Dust isn't the only potential hazard that OSIRIS-REx is looking out for. Later this fall, the spacecraft will use PolyCam and MapCam to search for natural satellites - any chunk of rock orbiting Bennu that is larger than 10 centimeters and bright enough to be seen (which requires an albedo (https://www.asteroidmission.org/wotw-albedo/) of at least 0.03). While most asteroids exert a weak gravitational pull due to their relatively small sizes (Bennu has a diameter of roughly 500 meters), they are capable of holding small moons in orbit around themselves. In fact, asteroid 243 Ida (https://solarsystem.nasa.gov/small-bodies/asteroids/243-ida/in-depth/), the second asteroid ever visited by a spacecraft, surprised scientists when images from the Galileo mission revealed it had a small moon, now called Dactyl.

(https://www.asteroidmission.org/wp-content/uploads/2018/10/417_Ida_Dactyl_main-300x222.jpg) (https://www.asteroidmission.org/?attachment_id=10102#main)
243 Ida is the second asteroid visited by a spacecraft (Galileo) and the first found to have its own moon. Credit: NASA/JPL

To look for moons, two of OSIRIS-REx's cameras will again capture a series of carefully planned mosaics covering the area around Bennu. First, PolyCam will map the asteroid's entire Hill Sphere (https://www.asteroidmission.org/wotw-hill-sphere/) (the area wh ere a satellite could theoretically exist), looking for objects that are one meter or larger. Then, as the spacecraft gets closer, MapCam will conduct a search pattern for smaller satellites (down to 10 centimeters), which could only exist in a stable orbit closer to Bennu.

Similar to a dust plume discovery, if OSIRIS-REx were to detect a natural satellite orbiting Bennu, it would trigger a contingency plan. The spacecraft would conduct a braking burn and stop its approach to the asteroid about 40 or 50 kilometers out. The team would then take a few weeks to closely map the moon's orbit around Bennu and decide whether any changes need to be made to the mission plan for the spacecraft to safely avoid the satellite. Later on, the team would study the moon in more depth, collecting images and other data about its color, reflectivity, shape, size, and other features.
 
https://www.youtube.com/watch?v=e3ffcRPlIok (https://www.youtube.com/watch?v=e3ffcRPlIok)
Also similar to a dust plume detection, a moon would be an interesting scientific discovery. "If we did find a satellite, mapping its orbit would allow us to refine the mass of Bennu before going into orbit around the asteroid or even doing close approaches," says Hergenrother. "It would also tell us more about Bennu's history."

While potential hazards like dust and natural satellites present navigation, safety and other challenges, they are part of the inherent adventure of exploring a never-before-visited world. Although Bennu has been thoroughly studied from Earth, the asteroid may have many surprises in store for the mission team. Careful planning and thorough observation strategies will ensure that these surprises are transformed from potential hazards into new scientific knowledge.
Название: OSIRIS-REx
Отправлено: tnt22 от 19.10.2018 12:51:13
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 15 ч. назад (https://twitter.com/OSIRISREx/status/1052998168856551424)

Good news! Yesterday, I successfully ejected the flight cover on my TAGSAM sampling arm. I also performed two spins -- called Sample Mass Measurements -- before and after to confirm that my mass changed about 2.5 lbs (approximately the weight of the cover).

https://video.twimg.com/ext_tw_video/1052996961287122944/pu/vid/1280x720/vofm1mCkKh1cll3i.mp4?tag=5 (https://video.twimg.com/ext_tw_video/1052996961287122944/pu/vid/1280x720/vofm1mCkKh1cll3i.mp4?tag=5)
(video (https://video.twimg.com/ext_tw_video/1052996961287122944/pu/vid/1280x720/vofm1mCkKh1cll3i.mp4?tag=5) 0:03)


14 ч. назад (https://twitter.com/OSIRISREx/status/1053002190082650112)

Since there is no way to directly watch the cover eject, the mission team used several different methods to confirm that my TAGSAM cover deployed successfully.
#ExplainHowYouGotHere (https://twitter.com/hashtag/ExplainHowYouGotHere?src=hash)
Цитата(https://pbs.twimg.com/profile_images/880089442832138241/cqqqKUmb_bigger.jpg)Dante Lauretta‏ @DSLauretta (https://twitter.com/DSLauretta) 15 ч. назад (https://twitter.com/DSLauretta/status/1052998943569629185)

We have confirmed successful deployment of the @OSIRISREx (https://twitter.com/OSIRISREx) TAGSAM sampling device's launch cover. We detected cover ejection by successful commands, thermal signatures, forces on the spacecraft, and a test run of our Sample Mass Measurement technique!
Название: OSIRIS-REx
Отправлено: tnt22 от 19.10.2018 12:58:33
Цитата(https://pbs.twimg.com/profile_images/271119562/jcmy2_bigger.jpg)Jonathan McDowell‏Подлинная учетная запись @planet4589 (https://twitter.com/planet4589) 12 ч. назад (https://twitter.com/planet4589/status/1053048688740876288)

Ah OK, so that's a little more detail. 1 kg and ejection was at some point during Oct 17 within timezone ambiguities


12 ч. назад (https://twitter.com/planet4589/status/1053049503702487041)

Current orbit of O-REX and of TAGSAM Cover is 0.896 x 1.355 AU x 6.0 deg (heliocentric ecliptic)


(https://pbs.twimg.com/profile_images/880089442832138241/cqqqKUmb_bigger.jpg)Dante Lauretta‏ @DSLauretta (https://twitter.com/DSLauretta) 10 ч. назад (https://twitter.com/DSLauretta/status/1053079368384176128)

.@planet4589 (https://twitter.com/planet4589). The TAGSAM launch cover measures 40x40cm and has a mass of 1.1 kg. The cover was ejected roughly 90 degrees from the spacecraft velocity vector. Predicted deployment velocity was between 1.0 and 2.5 m/s. We saw a 1mm/s velocity change in the spacecraft as a result
Название: OSIRIS-REx
Отправлено: tnt22 от 23.10.2018 19:26:58
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 44 мин. назад (https://twitter.com/OSIRISREx/status/1054759634982985729)

Today, I start using my cameras to search the area around Bennu for natural satellites (aka small moons). If we find evidence of a moon, I'll slow down so the team can study the object, understand its orbit, and plan the rest of my safe approach to Bennu: http://bit.ly/2ynCsxb  (https://t.co/SWHfO7oL7B)

(https://pbs.twimg.com/media/DqNBhv-UwAEC1wN.jpg)
Название: OSIRIS-REx
Отправлено: Pirat5 от 31.10.2018 08:49:01
NASA's OSIRIS-REx Executes Third Asteroid Approach Maneuver
October 29, 2018
 
NASA's OSIRIS-REx spacecraft executed its third Asteroid Approach Maneuver (AAM-3) today. The trajectory correction maneuver (TCM) thrusters fired in a series of two braking maneuvers designed to slow the spacecraft's speed relative to Bennu from approximately 11.7 mph (5.2 m/sec) to .24 mph (.11 m/sec). Due to constraints that science instruments not be pointed too closely to the Sun, this maneuver was designed as two separate burns of approximately 5.8 mph (2.6 m/sec) each, to accomplish a net change in velocity of around 11.5 mph (5.13 m/sec). The mission team will continue to examine telemetry and tracking data over the next week to verify the new trajectory. The maneuver targeted the spacecraft to fly through a corridor designed for the collection of high-resolution images that will be used to build a shape model of Bennu.
The OSIRIS-REx spacecraft is in the midst of a six-week series of final approach maneuvers. AAM-1 and AAM-2, which executed on Oct. 1 and Oct. 15 respectively, slowed the spacecraft by a total of approximately 1,088 mph (486 m/sec). The last of the burns, AAM-4, is scheduled for Nov. 12 and will adjust the spacecraft's trajectory to arrive at a position 12 miles (20 km) from Bennu on Dec. 3.
https://www.asteroidmission.org/?latest-news=nasas-osiris-rex-executes-third-asteroid-approach-maneuver (https://www.asteroidmission.org/?latest-news=nasas-osiris-rex-executes-third-asteroid-approach-maneuver)
Название: OSIRIS-REx
Отправлено: Pirat5 от 31.10.2018 09:32:23
Bennu at 13 Pixels (https://www.asteroidmission.org/bennu-13px/)
(https://testforum.novosti-kosmonavtiki.ru/forum/file/89314)
Oct. 23, 2018 Bennu was about 1,800 miles (3,000 km) 

Bennu at 100 Pixels (https://www.asteroidmission.org/20181029t1019ut_bennu/)
(https://testforum.novosti-kosmonavtiki.ru/forum/file/89315)
Oct. 29, 2018 from a distance of about 205 miles (330 km).

Jupiter (https://www.asteroidmission.org/bennu-jupiterosirisrexobservations/)
(https://testforum.novosti-kosmonavtiki.ru/forum/file/89316)
Feb. 12, 2017 Jupiter was about 418 million miles (673 million km) from the spacecraft >Jupiter

https://www.asteroidmission.org/galleries/spacecraft-imagery/
Название: OSIRIS-REx
Отправлено: sol от 03.11.2018 17:08:22
ЦитатаPirat5 пишет:
Bennu at 13 Pixels (https://www.asteroidmission.org/bennu-13px/)
 
Oct. 23, 2018 Bennu was about 1,800 miles (3,000 km)

 Bennu at 100 Pixels (https://www.asteroidmission.org/20181029t1019ut_bennu/)
 
Oct. 29, 2018 from a distance of about 205 miles (330 km).

 Jupiter (https://www.asteroidmission.org/bennu-jupiterosirisrexobservations/)
 
Feb. 12, 2017 Jupiter was about 418 million miles (673 million km) from the spacecraft >Jupiter

 https://www.asteroidmission.org/galleries/spacecraft-imagery/
А это Бену? Может, Осирис не туда прилетел? Картина астероида что-то смутно напоминает. :)
  Не налетел бы там на Сокола...
Название: OSIRIS-REx
Отправлено: Pirat5 от 03.11.2018 22:13:07
....а всё началось со встречи астероида Штейн !

Там на ГИФке 13пикселей заметны неравномерности освещения. Вдруг да большой кратер?
Название: OSIRIS-REx
Отправлено: Сеян от 04.11.2018 00:10:17
Цитатаsol пишет:
А это Бену? Может, Осирис не туда прилетел? Картина астероида что-то смутно напоминает.  :)
Не налетел бы там на Сокола...
И, что тоже нет пыли? )
Название: OSIRIS-REx
Отправлено: tnt22 от 04.11.2018 10:02:30
https://twitter.com/VinnyChirayil/status/1058549562397274113
ЦитатаВ ответ @planet4589

The left pic shows an earlier tweet by OSIRIS-REx and the right shows my updated version of it. Radar estimate was super accurate, unlike lightcurve based estimate of Ryugu. 3 cheers to the Bennu team !

 #Bennu #OSIRISREx #asteroids
(https://pbs.twimg.com/media/DrC5NLDUUAALZc3.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 07.11.2018 03:17:44
Цитата(https://pbs.twimg.com/profile_images/271119562/jcmy2_bigger.jpg)Jonathan McDowell‏Подлинная учетная запись @planet4589 (https://twitter.com/planet4589) 5 нояб. (https://twitter.com/planet4589/status/1059298516626034690)

The @OSIRISREx (https://twitter.com/OSIRISREx) space probe is now only 178 km from asteroid (101955) Bennu. Bennu's gravitational (Hill) sphere currently has a radius of about 35 km - a distance Osiris-REX will reach on Nov 30
Название: OSIRIS-REx
Отправлено: tnt22 от 07.11.2018 08:44:34
Цитата(https://pbs.twimg.com/profile_images/880089442832138241/cqqqKUmb_bigger.jpg)Dante Lauretta‏ @DSLauretta (https://twitter.com/DSLauretta) 9 ч. назад (https://twitter.com/DSLauretta/status/1059900916352991232)

Now with full coverage - here is a complete rotation of Bennu with the colors stretched to accentuate the reflectance variations.

https://video.twimg.com/tweet_video/DrWF_rfUcAAitY4.mp4 (https://video.twimg.com/tweet_video/DrWF_rfUcAAitY4.mp4)
(Video (https://video.twimg.com/tweet_video/DrWF_rfUcAAitY4.mp4) 0:06)
Название: OSIRIS-REx
Отправлено: tnt22 от 07.11.2018 22:09:25
(https://testforum.novosti-kosmonavtiki.ru/forum/file/89549)
Название: OSIRIS-REx
Отправлено: tnt22 от 07.11.2018 22:18:11
(https://testforum.novosti-kosmonavtiki.ru/forum/file/89552)
Название: OSIRIS-REx
Отправлено: tnt22 от 07.11.2018 22:25:45
(https://testforum.novosti-kosmonavtiki.ru/forum/file/89553) (https://testforum.novosti-kosmonavtiki.ru/forum/file/89554)
Название: OSIRIS-REx
Отправлено: tnt22 от 07.11.2018 22:32:54
(https://testforum.novosti-kosmonavtiki.ru/forum/file/89557)
Название: OSIRIS-REx
Отправлено: tnt22 от 07.11.2018 22:50:36
(https://testforum.novosti-kosmonavtiki.ru/forum/file/89563) (https://testforum.novosti-kosmonavtiki.ru/forum/file/89564)
Название: OSIRIS-REx
Отправлено: tnt22 от 07.11.2018 23:28:51
(https://testforum.novosti-kosmonavtiki.ru/forum/file/89570)
Название: OSIRIS-REx
Отправлено: tnt22 от 07.11.2018 23:36:38
(https://testforum.novosti-kosmonavtiki.ru/forum/file/89571)
Название: OSIRIS-REx
Отправлено: tnt22 от 07.11.2018 23:40:03
(https://testforum.novosti-kosmonavtiki.ru/forum/file/89573)
Название: OSIRIS-REx
Отправлено: tnt22 от 08.11.2018 19:59:53
ЦитатаNASA Hosts Science Chat on Two Upcoming Out of this World Encounters

NASA Video (https://www.youtube.com/channel/UC_aP7p621ATY_yAa8jMqUVA)

Опубликовано: 7 нояб. 2018 г.

NASA hosted a live Science Chat to discuss upcoming encounters of two of the agency's planetary missions - the arrival of the Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) at the asteroid Bennu, on Dec. 3, and New Horizons' historic flyby of Kuiper Belt object 2014 MU69, on Jan. 1, 2019. Participants included: Hal Weaver, New Horizons Project Scientist, Johns Hopkins Applied Physics Laboratory and Melissa Morris, OSIRIS-REx Deputy Program Scientist, NASA Headquarters.
https://www.youtube.com/watch?v=1ZoNxoRQ7lEhttps://www.youtube.com/watch?v=1ZoNxoRQ7lE (https://www.youtube.com/watch?v=1ZoNxoRQ7lE) (30:13)
Название: OSIRIS-REx
Отправлено: tnt22 от 09.11.2018 15:15:12
8 ноября прошёл очередной пресс-брифинг по работам с зондом Hayabusa-2. На брифинге был упомянут родственный проект НАСА OSIRIS-REx.

Материалы брифинга на англ. яз. - Hayabusa2_Press20181108_ver6_en2.pdf (http://www.hayabusa2.jaxa.jp/en/enjoy/material/press/Hayabusa2_Press20181108_ver6_en2.pdf), - 2.8 MB, 37 стр, 2018-11-09 08:30:24 UTC

(https://testforum.novosti-kosmonavtiki.ru/forum/file/89612)(https://testforum.novosti-kosmonavtiki.ru/forum/file/89614)(https://testforum.novosti-kosmonavtiki.ru/forum/file/89613)
Название: OSIRIS-REx
Отправлено: tnt22 от 13.11.2018 21:25:16
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 12 нояб. (https://twitter.com/OSIRISREx/status/1062026185469648897)

Today I'll be executing Asteroid Approach Maneuver 4, the final engine burn in a series designed to slow my speed relative to Bennu as I approach the #asteroid (https://twitter.com/hashtag/asteroid?src=hash).
#WeBrakeForAsteroids (https://twitter.com/hashtag/WeBrakeForAsteroids?src=hash)
More details: http://bit.ly/AAM1Info  (https://t.co/u2bbGWyOjD)
Название: OSIRIS-REx
Отправлено: tnt22 от 14.11.2018 22:31:39
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 12:49 (https://twitter.com/OSIRISREx/status/1062447443709636608) - 13 нояб. 2018 г.

Asteroid Approach Maneuver 4 was a success and I'm on track for arrival at Bennu on Dec. 3! AAM-4 used the ACS thrusters, which are capable of velocity changes as small as 0.02 mph. I'll be relying on them a lot when I start flying around Bennu. More: https://bit.ly/2zU1YKu  (https://t.co/UZtMMYnDKJ)

(https://pbs.twimg.com/media/Dr6RBoVUcAAzgNl.jpg)
https://www.asteroidmission.org/?latest-news=nasas-osiris-rex-executes-fourth-asteroid-approach-maneuver
Цитата
NASA's OSIRIS-REx Executes Fourth Asteroid Approach Maneuver

November 13, 2018 - NASA's OSIRIS-REx spacecraft executed its fourth Asteroid Approach Maneuver (AAM-4) yesterday. The spacecraft fired its Attitude Control System (ACS) thrusters to slow the spacecraft from approximately 0.31 mph (0.14 m/sec) to 0.10 mph (0.04 m/sec). The ACS thrusters are capable of velocity changes as small as 0.02 mph (0.01 m/sec). The mission team will continue to examine telemetry and tracking data over the next week to verify the new trajectory. The maneuver targeted the spacecraft to fly through a corridor designed for the collection of high-resolution images that will be used to build a shape model of Bennu.

With the execution of AAM-4, the OSIRIS-REx spacecraft concludes a six-week series of Bennu approach maneuvers. AAM-1 and AAM-2, which executed on Oct. 1 and Oct. 15 respectively, slowed the spacecraft by a total of approximately 1,088 mph (486 m/sec). AAM-3 and AAM-3A, which executed on Oct. 29 and Nov. 5 respectively, further refined the spacecraft's trajectory and speed to set the conditions for a successful AAM-4 maneuver. After a final correction maneuver scheduled for Nov. 30, the spacecraft will be on track to arrive at a position 12 miles (20 km) from Bennu on Dec. 3.
Название: OSIRIS-REx
Отправлено: tnt22 от 14.11.2018 22:44:14
Цитата(https://pbs.twimg.com/profile_images/880089442832138241/cqqqKUmb_bigger.jpg)Dante Lauretta‏ @DSLauretta (https://twitter.com/DSLauretta) 6 ч. назад (https://twitter.com/DSLauretta/status/1062704640356020224)

Today on @OSIRISREx (https://twitter.com/OSIRISREx), we are deploying the Touch-and-Go Sample Acquisition Mechanism (TAGSAM) - our robotic sampling arm. This operation is the first time we have exercised the full range of motion on TAGSAM since launch. Images will be downlinked tomorrow for final verification.

(https://pbs.twimg.com/media/Dr98JeOVsAUcCTA.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 17.11.2018 01:58:29
ЦитатаOSIRIS-REx TAGing Asteroid Bennu
Доступ по ссылке

OSIRIS-REx Mission (https://www.youtube.com/channel/UCgesBEUkT8iyGssfuJm-Gnw)

Дата загрузки: 15 нояб. 2018 г.

In mid-2020, the OSIRIS-REx spacecraft will use its TAGSAM (Touch-and-Go Sample Acquisition Mechanism) device to stir up and collect a sample of loose material from asteroid Bennu's surface. That material, which may contain organic molecules that are the precursors to life in the Solar System, will be returned to Earth for study in 2023.
https://www.youtube.com/watch?v=CWBALheaIMwhttps://www.youtube.com/watch?v=CWBALheaIMw (https://www.youtube.com/watch?v=CWBALheaIMw) (0:26)
Название: OSIRIS-REx
Отправлено: tnt22 от 17.11.2018 02:01:45
ЦитатаTesting the OSIRIS-REx Spacecraft's Asteroid Sampling Arm
Доступ по ссылке

OSIRIS-REx Mission (https://www.youtube.com/channel/UCgesBEUkT8iyGssfuJm-Gnw)

Дата загрузки: 15 нояб. 2018 г.

Over a month-long period beginning Oct. 17, 2018, the OSIRIS-REx team conducted a series of tests to ensure that TAGSAM, the spacecraft's sampling mechanism, is ready to collect a sample from Bennu in 2020. This rehearsal marked the first time since launch that the TAGSAM arm has moved through its full range of motion.
https://www.youtube.com/watch?v=4jJpyB8ieochttps://www.youtube.com/watch?v=4jJpyB8ieoc (https://www.youtube.com/watch?v=4jJpyB8ieoc) (0:17)
Название: OSIRIS-REx
Отправлено: tnt22 от 17.11.2018 02:08:15
https://www.asteroidmission.org/?latest-news=tagsam-testing-complete-osiris-rex-prepared-tag-asteroid
Цитата
[SIZE=8]TAGSAM Testing Complete: OSIRIS-REx Prepared to TAG an Asteroid[/SIZE]
By Christine Hoekenga

November 16, 2018 - On Nov. 14, NASA's OSIRIS-REx spacecraft stretched out its robotic sampling arm for the first time in space. The arm, more formally known as the Touch-and-Go Sample Acquisition Mechanism (TAGSAM), is key to the spacecraft achieving the primary goal of the mission: returning a sample from asteroid Bennu in 2023.

(https://www.asteroidmission.org/wp-content/uploads/2018/11/SamCam-TAGSAM-111418-CloseCrop-300x300.png) (https://www.asteroidmission.org/?attachment_id=11520#main)
This image, showing the OSIRIS-REx Touch-and-Go Sample Acquisition Mechanism (TAGSAM) sampling head extended from the spacecraft at the end of the TAGSAM arm, was taken by the SamCam camera on Nov. 14, 2018 during a visual checkout of the spacecraft's sampling system. A similar observation will be taken at Bennu during sample collection to help document the asteroid material collected in the TAGSAM head. Credit: NASA/Goddard/University of Arizona

As planned, engineers at Lockheed Martin commanded the spacecraft to move the arm through its full range of motion - flexing its shoulder, elbow, and wrist "joints." This long-awaited stretch, which was confirmed by telemetry data and imagery captured by the spacecraft's SamCam camera, demonstrates that the TAGSAM head is ready to collect a sample of loose dirt and rock (called regolith) from Bennu's surface.
"The TAGSAM exercise is an important milestone, as the prime objective of the OSIRIS-REx mission is to return a sample of Bennu to Earth," said Dante Lauretta, OSIRIS-REx principal investigator at the University of Arizona, Tucson. "This successful test shows that, when the time comes, TAGSAM is ready to reach out and tag the asteroid."

YEARS OF INNOVATION

Lockheed Martin engineers spent more than a decade designing, building, and testing TAGSAM (https://www.asteroidmission.org/?attachment_id=1699#main), which includes an 11-foot (3.35-meter) arm with three articulating joints, a round sampler head at the end of the arm that resembles the air filter in a car, and three bottles of high-pressure nitrogen gas.

This test deployment was a rehearsal for a date in mid-2020 when the spacecraft will unfold the TAGSAM arm again, slowly descend to Bennu's surface, and briefly touch the asteroid with the sampler head. A burst of nitrogen gas will stir up regolith on the asteroid's surface, which will be caught in the TAGSAM head. The TAG sequence will take about five seconds, after which the spacecraft will execute small maneuvers to carefully back away from Bennu. Afterward, SamCam will image the sampler head, as it did during the test deployment, to help confirm that TAGSAM collected at least 2.1 ounces (60 grams) of regolith.

https://www.youtube.com/watch?v=CWBALheaIMw (https://www.youtube.com/watch?v=CWBALheaIMw)
The TAGSAM mechanism was designed for the key challenge unique to the OSIRIS-REx mission: collecting a sample from the smallest planetary body ever to be orbited by a spacecraft. "First-of-its-kind innovations like this one serve as the precursor for future missions to small bodies," said Sandy Freund, systems engineer manager and Lockheed Martin OSIRIS-REx MSA manager. "By proving out these technologies and techniques, we are going to be able to return the largest sample from space in half a century and pave the way for other missions."

A MONTH OF TESTING

The unfolding of the TAGSAM arm was the latest and most significant step in a series of tests and check-outs of the spacecraft's sampling system, which began in October when OSIRIS-REx jettisoned the cover that protected the TAGSAM head during launch and the mission's outbound cruise phase. Shortly before the cover ejection, and again the day after, OSIRIS-REx performed two spins called Sample Mass Measurements. By comparing the spacecraft's inertial properties during these before-and-after spins, the team confirmed that the 2.67-pound (1.21-kilogram) cover was successfully ejected on Oct. 17.

A week later, on Oct. 25, the Frangibolts holding the TAGSAM arm in place fired successfully, releasing the arm and allowing the team to move it into a parked position just outside its protective housing. After resting in this position for a few weeks, the arm was fully deployed into its sampling position, its joints were tested, and images were captured with SamCam. The spacecraft will execute two additional Sample Mass Measurements over the next two days. The mission team will use these spins as a baseline to compare with the results of similar spins that will be conducted after TAG in 2020 in order to confirm the mass of the sample collected.

https://www.youtube.com/watch?v=4jJpyB8ieoc (https://www.youtube.com/watch?v=4jJpyB8ieoc)
Although the sampling system was rigorously tested on Earth, this rehearsal marked the first time that the team has deployed TAGSAM in the micro-gravity environment of space.

"The team is very pleased that TAGSAM has been released, deployed, and is operating as commanded through its full range of motion." said Rich Burns, OSIRIS-REx project manager at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "It has been restrained for over two years since launch, so it is gratifying to see it out of its shackles and performing well."

OSIRIS-REx is scheduled to arrive at Bennu on Dec. 3. It will spend nearly one year surveying the asteroid with five scientific instruments so that the mission team can select a location that is safe and scientifically interesting to collect the sample.

"Now that we have put TAGSAM through its paces in space and know it is ready to perform at Bennu, we can focus on the challenges of navigating around the asteroid and seeking out the best possible sample site," said Lauretta.
Название: OSIRIS-REx
Отправлено: tnt22 от 17.11.2018 09:24:23
Цитата(https://pbs.twimg.com/profile_images/880089442832138241/cqqqKUmb_bigger.jpg)Dante Lauretta‏ @DSLauretta (https://twitter.com/DSLauretta) 8 ч. назад (https://twitter.com/DSLauretta/status/1063550869898059776)

The fourth @OSIRISREx (https://twitter.com/OSIRISREx) coin design is complete! Get your set now on @kickstarter (https://twitter.com/kickstarter) https://www.kickstarter.com/projects/827615927/downlink-the-game-of-planetary-discovery ... (https://t.co/AlgLgtKKT2)

(https://pbs.twimg.com/media/DsJ93ShUcAEp_Nh.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 19.11.2018 01:25:56
Цитата(https://pbs.twimg.com/profile_images/271119562/jcmy2_bigger.jpg)Jonathan McDowell‏Подлинная учетная запись @planet4589 (https://twitter.com/planet4589) 13:46 (https://twitter.com/planet4589/status/1064273663413886977) - 18 нояб. 2018 г.

NASA's @OSIRISREx (https://twitter.com/OSIRISREx) space probe continues its approach to minor planet (101955) Bennu - now only 125 km away. It will enter Bennu's Hill sphere on Nov 30. Meanwhile, JAXA's @haya2e_jaxa (https://twitter.com/haya2e_jaxa) remains parked 20 km from (162173) Ryugu
Название: OSIRIS-REx
Отправлено: tnt22 от 20.11.2018 00:41:25
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 42 мин.42 минуты назад (https://twitter.com/OSIRISREx/status/1064622683835387905)

I'm now only about 120 kilometers (75 miles) from #asteroid (https://twitter.com/hashtag/asteroid?src=hash) Bennu and recently completed a test of TAGSAM, my sample collection system.
#WhereIsOSIRISREx (https://twitter.com/hashtag/WhereIsOSIRISREx?src=hash)
http://www.asteroidmission.org/where-is-the-spacecraft/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2018/11/Orbit-Diagram-11-19-18-768x611.png)
(https://www.asteroidmission.org/wp-content/uploads/2018/11/Digital-Readout-11-19-18-768x262.png)
Название: OSIRIS-REx
Отправлено: tnt22 от 22.11.2018 15:50:04
ЦитатаWhat are asteroids, and why do we study them?

Canadian Space Agency (https://www.youtube.com/channel/UCdNtqpHlU1pCaVy2wlzxHKQ)

Опубликовано: 16 нояб. 2018 г.

Check out this video to learn what asteroids are and what these cosmic time capsules can tell us about the earliest days of our solar system. Did you know that the Canadian Space Agency is contributing to OSIRIS-REx, a mission to collect an asteroid sample? The seven-year journey will bring loose dust and gravel from the surface of asteroid Bennu to Earth in 2023. (Credit: Canadian Space Agency)
https://www.youtube.com/watch?v=aq0HnY205Wghttps://www.youtube.com/watch?v=aq0HnY205Wg (https://www.youtube.com/watch?v=aq0HnY205Wg) (2:13)
Название: OSIRIS-REx
Отправлено: tnt22 от 22.11.2018 15:52:56
https://www.asteroidmission.org/tagsam-samcam-side-by-side/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2018/11/TAGSAM-SamCam-side-by-side.png)

TAGSAM Sampler Head at Two Angles

These images show the OSIRIS-REx Touch-and-Go Sample Acquisition Mechanism (TAGSAM) sampling head extended from the spacecraft at the end of the TAGSAM arm. The spacecraft's SamCam camera captured the images on Nov. 14, 2018 as part of a visual checkout of the TAGSAM system (https://www.asteroidmission.org/?latest-news=tagsam-testing-complete-osiris-rex-prepared-tag-asteroid), which was developed by Lockheed Martin Space to acquire a sample of asteroid material in a low-gravity environment. The imaging was a rehearsal for a series of observations that will be taken at Bennu directly after sample collection.

In the image on the left, the TAGSAM head is tilted at five degrees on the arm and is brightly illuminated by the Sun. At this angle, the light saturates the lattice-like grille that surrounds the head and illuminates its interior, providing the lighting conditions needed to document the sample of Bennu once collected. In the image on the right, the TAGSAM head is aligned with the arm to clearly show the bottom surface of the head, including the metallic pads designed to capture additional dust and small particles from Bennu's surface.

Date Taken: Nov. 14, 2018

Instrument Used: OCAMS (SamCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 24.11.2018 10:01:13
https://www.asteroidmission.org/bennu-at-300-px/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2018/11/Bennu-at-300-px.png)

Bennu at 300 Pixels

NASA's OSIRIS-REx spacecraft obtained this image of the asteroid Bennu on November 16, 2018, from a distance of 85 miles (136 km). The image, which was taken by the PolyCam camera, shows Bennu at 300 pixels and has been stretched to increase contrast between highlights and shadows.

Date Taken: November 16, 2018

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 27.11.2018 04:37:11
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 4 ч. назад (https://twitter.com/OSIRISREx/status/1067175948502491136)

It now takes nearly 14 minutes round-trip for me to communicate with my team back on Earth. (https://abs.twimg.com/emoji/v2/72x72/1f6f0.png) (https://abs.twimg.com/emoji/v2/72x72/2194.png) (https://abs.twimg.com/emoji/v2/72x72/1f4e1.png) My light time will increase as I approach #asteroid (https://twitter.com/hashtag/asteroid?src=hash) Bennu and will be more than 20 minutes during sample collection. More on my progress: http://bit.ly/WhereIsOREX  (https://t.co/rACre4nDe4)

(https://pbs.twimg.com/media/Ds9dihSV4AMUIr_.jpg)
http://www.asteroidmission.org/where-is-the-spacecraft/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2018/11/Orbit-Diagram-11-26-18-768x611.png)
(https://www.asteroidmission.org/wp-content/uploads/2018/11/Digital-Readout-11-26-18-768x262.png)
Название: OSIRIS-REx
Отправлено: tnt22 от 30.11.2018 13:45:47
Цитата(https://pbs.twimg.com/profile_images/271119562/jcmy2_bigger.jpg)Jonathan McDowell‏Подлинная учетная запись @planet4589 (https://twitter.com/planet4589) 3 ч. назад (https://twitter.com/planet4589/status/1068416651404738560)

The @OSIRISREx (https://twitter.com/OSIRISREx) probe should now be about 41 km from Bennu.
Название: OSIRIS-REx
Отправлено: tnt22 от 30.11.2018 14:05:45
https://www.asteroidmission.org/orex-arrival-5-days-carousel/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2018/11/OREx-Arrival-5-Days-Carousel.jpg)

4 Days Until Arrival

In just four days -- on Dec. 3, 2018 -- NASA's OSIRIS-REx spacecraft will arrive at asteroid Bennu after more than two years traveling through space. Once it reaches its destination, the spacecraft will spend about a year and a half surveying this never-before-visited asteroid and preparing to collect a sample of surface material for return to Earth.

On Dec. 3 at 9:45 am MT/11:45 am ET, join members of the mission team for a LIVE NASA broadcast (https://www.nasa.gov/press-release/nasa-provides-live-coverage-of-spacecraft-arrival-at-asteroid-that-may-have-answers-to) from the control room at Lockheed Martin celebrating the spacecraft's arrival at Bennu. Brush up on your mission knowledge with pre-show programming beginning at 9:15 am MT/11:15 am ET.

Viewing options for the broadcast include Facebook Live (https://www.facebook.com/OSIRISREx/), Ustream (http://www.ustream.tv/channel/nasa-media-channel), YouTube (https://www.youtube.com/watch?v=P11y8N22Rq0) and the NASA website. (https://www.nasa.gov/nasalive)

Participants in the arrival coverage event include:
•   Michelle Thaller, moderator, NASA's Goddard Space Flight Center, Greenbelt, Md
•   Heather Enos, OSIRIS-REx deputy principal investigator, University of Arizona, Tucson
•   Rich Burns, OSIRIS-REx project manager, NASA's Goddard Space Flight Center, Greenbelt, Md
•   Mark Fisher, OSIRIS-REx spacecraft engineer, Lockheed Martin Space, Littleton, Colo.
•   Coralie Adam, OSIRIS-REx flight navigator, KinetX, Inc. Space Navigation and Flight Dynamics, Simi Valley, Calif.

Media can submit questions in advance to Danielle.M.Hauf@lmco.com. On Dec. 3, media and the public may ask questions using the hashtag #askNASA on Twitter or by leaving a comment on the livestream of the event on the OSIRIS-REx Mission Facebook page. (https://www.facebook.com/OSIRISREx/)

Credit: University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 01.12.2018 00:44:22
https://www.nasa.gov/press-release/nasa-provides-live-coverage-of-spacecraft-arrival-at-asteroid-that-may-have-answers-to
ЦитатаNov. 29, 2018
MEDIA ADVISORY M18-180

NASA Provides Live Coverage of Spacecraft Arrival at Asteroid That May Have Answers to the Origin of our Solar System

(https://www.nasa.gov/sites/default/files/styles/full_width/public/thumbnails/image/5_bennu-1041.jpg?itok=Ir0OWSVW) (https://www.nasa.gov/sites/default/files/thumbnails/image/5_bennu-1041.jpg)
This "super-resolution" view of asteroid Bennu was created using eight images obtained by NASA's OSIRIS-REx spacecraft on Oct. 29, 2018, from a distance of about 205 miles (330 kilometers).
Credits: NASA/Goddard/University of Arizona
Larger view (https://www.asteroidmission.org/20181029t1019ut_bennu/)


NASA's Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft is scheduled to rendezvous with its targeted asteroid, Bennu, on Monday, Dec. 3 at approximately noon EST.

NASA will air a live event from 11:45 a.m. to 12:15 p.m. EST to highlight the arrival of the agency's first asteroid sample return mission. The program will originate from OSIRIS-REx's mission control at the Lockheed Martin Space facility in Littleton, Colorado, and will air on NASA Television, Facebook Live (https://www.facebook.com/OSIRISREx/), Ustream (http://www.ustream.tv/channel/nasa-media-channel), YouTube (https://www.youtube.com/watch?v=P11y8N22Rq0) and the agency's website (https://www.nasa.gov/live). NASA TV also will air an arrival preview program starting at 11:15 a.m. EST.

OSIRIS-REx launched in September 2016 and has been slowly approaching Bennu. The spacecraft will spend almost a year surveying the asteroid with five scientific instruments with the goal of selecting a location that is safe and scientifically interesting to collect the sample. OSIRIS-REx will return the sample to Earth in September 2023.

Participants in the arrival coverage event include:
    [/li]
  • Michelle Thaller, moderator, NASA's Goddard Space Flight Center, Greenbelt, Md
  • Rich Burns, OSIRIS-REx project manager, NASA's Goddard Space Flight Center, Greenbelt, Md
  • Heather Enos, OSIRIS-REx deputy principal investigator, University of Arizona, Tucson
  • Mark Fisher, OSIRIS-REx spacecraft engineer, Lockheed Martin Space, Littleton, Colo.
  • Coralie Adam, OSIRIS-REx flight navigator, KinetX, Inc. Space Navigation and Flight Dynamics, Simi Valley, Calif.
Last Updated: Nov. 29, 2018
Editor: Katherine Brown
Название: OSIRIS-REx
Отправлено: кукушка от 01.12.2018 10:52:48
NASA будет транслировать приземление зонда на астероид в прямом эфире (https://hi-news.ru/research-development/nasa-budet-translirovat-prizemlenie-zonda-na-asteroid-v-pryamom-efire.html)

Не успел посадочный модуль InSight отдохнуть от своего приземления (https://hi-news.ru/space/zond-insight-dobralsya-do-marsa-xronika-prizemleniya-v-pryamom-efire.html) на Красную планету, как NASA уже готовится к другому потрясающему событию. Космический аппарат Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx (http://hi-news.ru/tag/osiris-rex/), если коротко) приближается к астероиду Бенну, и NASA будет транслировать встречу в прямом эфире. Само рандеву зонда с астероидом состоится в понедельник, 3 декабря. Трансляция будет вестись из центра управления миссией OSIRIS-REx, так что мы сможем увидеть всех инженеров, наблюдающих за состоянием космического аппарата.

Космический аппарат направился к своей цели в сентябре 2016 года.
«Осирис-Рекс» сядет на Бенну
Цель аппарата -- приземлиться на космический камешек и заняться его исследованиями, и в NASA, конечно же, с восторгом думают о том, что аппарат мог бы найти. Но прежде чем это произойдет, ученым нужно сперва выбрать место для посадки, чтобы у OSIRIS-REx были наибольшие шансы на успех. После проведения всех необходимых замеров, посадочный модуль покинет астероид и отправится к Земле с образцом материала с Бенну.
«Космический аппарат потратит почти год на исследование астероида с помощью пяти научных приборов, чтобы выбрать место, которое будет наиболее безопасным и интересным с точки зрения науки для сбора образцов», объясняет NASA. «OSIRIS-REx вернет образцы на Землю в сентябре 2023 года».
Подробности о прямом эфире NASA, который продлится примерно полчаса, а также о самой миссии, вы еще обязательно найдете на нашем сайте, поэтому проверяйте почаще. Получаса будет достаточно, чтобы NASA смогло подтвердить безопасное приземление зонда. Пока неизвестно, впрочем, какого рода информацию мы, как зрители, сможем получить с астероида Бенну.
Название: OSIRIS-REx
Отправлено: tnt22 от 01.12.2018 22:30:20
Цитата(https://pbs.twimg.com/profile_images/271119562/jcmy2_bigger.jpg)Jonathan McDowell‏Подлинная учетная запись @planet4589 (https://twitter.com/planet4589) 5 мин. назад (https://twitter.com/planet4589/status/1068948971266162688)

Assuming @OSIRISREx (https://twitter.com/OSIRISREx) is continuing on its planned trajectory, it has now arrived within Bennu's Hill Sphere - it has reached the asteroid!
Название: OSIRIS-REx
Отправлено: tnt22 от 03.12.2018 06:52:12
https://tass.ru/kosmos/5862684
Цитата3 ДЕК, 01:44
Американский зонд подлетит к астероиду Бенну для изучения его поверхности

ТАСС, 3 декабря. Американская межпланетная станция OSIRIS-REx в понедельник подлетит к астероиду Бенну, поверхность которого ей предстоит изучать в течение следующих двух лет. Об этом в воскресенье сообщило Национальное управление США по аэронавтике и исследованию космического пространства (NASA) на своей странице в Twitter.

"Завтра наш OSIRIS-REx встретится с околоземным астероидом Бенну! Он будет изучать Бенну более двух лет прежде, чем забрать и доставить образец [грунта] на Землю", - говорится в сообщении.
Цитата(https://pbs.twimg.com/profile_images/188302352/nasalogo_twitter_bigger.jpg)NASA‏Подлинная учетная запись @NASA (https://twitter.com/NASA) 12:38 (https://twitter.com/NASA/status/1069329970365939712) - 2 дек. 2018 г.

Tomorrow's the day for our @OSIRISREx (https://twitter.com/OSIRISREx) spacecraft's rendezvous with near-Earth asteroid Bennu! It'll study Bennu for over two years, before collecting & returning a sample back to Earth. How to watch the approach live starting at 11:45am ET: https://go.nasa.gov/2FVscSY  (https://t.co/7lgTMWTUsZ) #WelcomeToBennu (https://twitter.com/hashtag/WelcomeToBennu?src=hash)

(https://pbs.twimg.com/media/DtcF8OAWoAAiDLr.jpg)
Зонд был выведен в космос 8 сентября 2016 года. В сентябре этого года он приступил к первым исследованиям - изучению пылевых выбросов вокруг Бенну, чтобы рассчитать безопасную траекторию подлета станции к астероиду.

Аппарат оснащен несколькими приборами, в том числе фотокамерами, спектрометрами и лазерным дальномером. OSIRIS-REx начнет вести планомерную съемку и картографирование поверхности астероида. На основании полученных данных эксперты выберут место для забора грунта, что планируется осуществить в середине 2020 года без посадки с помощью руки-манипулятора, снабженной специальным пневматическим устройством. NASA надеется собрать до 2 кг пыли и грунта, которые должна доставить на Землю специальная капсула в сентябре 2023 года.
По словам ученых, изучение грунта с Бенну поможет лучше понять, как протекало формирование Солнечной системы. Другая цель проекта - получение новых данных о строении и составе астероидов, представляющих потенциальную опасность для Земли. Впоследствии эти сведения могут быть использованы для предотвращения астероидной угрозы.

Вращающийся по эллиптической орбите вокруг Солнца Бенну, диаметр которого составляет около 550 м, был обнаружен в сентябре 1999 года. Астрономы относят его к Аполлонам - астероидам, орбиты которых пересекают орбиту Земли. Вероятность столкновения с ним составляет 1 к 4000, и некоторые эксперты не исключают, что это может произойти в конце XXII века. Падение астероида такого размера на нашу планету было бы эквивалентно взрыву мощностью 2700 мегатонн в тротиловом эквиваленте.
Название: OSIRIS-REx
Отправлено: tnt22 от 03.12.2018 06:57:01
https://ria.ru/science/20181203/1538509207.html
ЦитатаАмериканский зонд OSIRIS-Rex в понедельник достигнет астероида Бенну
01:50 03.12.2018

ВАШИНГТОН, 3 дек - РИА Новости. Американский исследовательский зонд OSIRIS-Rex (Origins-Spectral Interpretation-Resource Identification-Security-Regolith Explorer) после двух лет полета в понедельник достигнет астероида Бенну, образцы грунта которого он вернет на Землю в 2023 году.

Зонд OSIRIS-Rex начал путешествие к Бенну (Bennu, ранее известный под номером 1999 RQ36) в сентябре 2016 года. По расчетам создателей, в середине 2020 года он осуществит забор грунта и твердых пород с астероида, которые затем вернет на Землю в 2023 году.

В понедельник аппарат достигнет расстояния в 20 километров от объекта своего изучения. Корректировка орбиты зонда началась в октябре: специалисты миссии последовательно снижали скорость движения зонда для его сближения с Бенну.
Цитата"Но прибытие - это начало. Полтора года я буду находиться у Бенну и готовиться к забору образцов", -- сообщили сотрудник миссии от имени зонда в его Twitter (https://twitter.com/osirisrex) аккаунте в субботу. В НАСА пояснили, что именно 3 декабря аппарат номинально завершит движение к Бенну и приступит к работе около него. За предстоящее до забора грунта время аппарат будет изучать астероид и составлять его карту.
В рамках первичного исследования астероида аппарат совершит по меньшей мере пять пролетов на расстоянии семи километров от северного и южного полюса Бенну и его экватора. В ходе облетов он будет собирать информацию о массе и движении астероида. После аппарат приступит к орбитальному этапу изучения Бенну, он будет совершать виток вокруг астероида за 50 часов и приближаться к космическому телу на расстояние до 1,4 километра. На последующих этапах изучения аппарат будет собирать информацию для определения места забора грунта астероида.

В ходе операции по забору частиц грунта с астероида зонд не будет опускаться на его поверхность, а лишь на пять секунд опустит на него трехметровую выдвижную "руку" TAGSAM (Touch-and-Go Sample Acquisition Mechanism). Устройство, работа которого была протестирована в средине ноября, втянет в специальную капсулу частицы материала с поверхности космического тела. Создатели рассчитывают, что с поверхности с помощью сжатого газа удастся добыть по крайней мере около 60-ти граммов пород. Ранее сообщалось, что полученные образцы грунта астероида разделят между собой США, Канада и Япония. Часть полученных образцов будет законсервирована для будущих исследований.
Миссия OSIRIS-Rex стала первым путешествием американского космического корабля за образцами породы к астероиду. НАСА называет миссию уникальной и возлагает на нее большие надежды как в отношении научных данных, так и отработки технических возможностей для будущих полетов в космос. Ожидается, что собранные с поверхности астероида материалы помогут ответить на многие вопросы о формировании Солнечной системы и появлении жизни на Земле.
Название: OSIRIS-REx
Отправлено: tnt22 от 03.12.2018 19:12:56
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91059)
Название: OSIRIS-REx
Отправлено: tnt22 от 03.12.2018 19:19:00
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91060)
Название: OSIRIS-REx
Отправлено: tnt22 от 03.12.2018 19:29:14
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91061) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91062) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91063) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91064) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91069) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91065) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91066) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91067) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91068) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91069)
Название: OSIRIS-REx
Отправлено: tnt22 от 03.12.2018 19:38:43
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91070) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91071) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91072) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91073) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91074)
Название: OSIRIS-REx
Отправлено: tnt22 от 03.12.2018 19:39:43
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91075)
Название: OSIRIS-REx
Отправлено: tnt22 от 03.12.2018 19:44:16
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91076) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91077) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91078)
Название: OSIRIS-REx
Отправлено: tnt22 от 03.12.2018 19:50:23
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91082)
Название: OSIRIS-REx
Отправлено: tnt22 от 03.12.2018 19:52:20
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91081)
Название: OSIRIS-REx
Отправлено: tnt22 от 04.12.2018 03:26:00
ЦитатаWhy Bennu?

NASA Goddard (https://www.youtube.com/channel/UCAY-SMFNfynqz1bdoaV8BeQ)

Опубликовано: 3 дек. 2018 г.

The goal of the OSIRIS-REx mission is to collect a sample from an asteroid and bring it back to Earth. But just how did the OSIRIS-REx team choose Bennu from the over 500,000 known asteroids in the solar system? Watch this cartoon to find out!
https://www.youtube.com/watch?v=4S0uk_5hm2chttps://www.youtube.com/watch?v=4S0uk_5hm2c (https://www.youtube.com/watch?v=4S0uk_5hm2c) (2:42)
Название: OSIRIS-REx
Отправлено: tnt22 от 04.12.2018 03:27:40
ЦитатаNASA's OSIRIS-REx: Mission to Bennu

NASA Goddard (https://www.youtube.com/channel/UCAY-SMFNfynqz1bdoaV8BeQ)

Опубликовано: 3 дек. 2018 г.

OSIRIS-REx is the third mission in NASA's New Frontiers Program. Its goal is to explore near-Earth asteroid Bennu, a remnant from the dawn of the solar system, and to return a sample of Bennu to Earth in 2023. OSIRIS-REx launched in September 2016 and arrives at Bennu on December 3, 2018. This video illustrates each of the mission's carefully-designed orbit maneuvers and mapping campaigns on its journey to Bennu and back.
https://www.youtube.com/watch?v=NYGHbl_esgwhttps://www.youtube.com/watch?v=NYGHbl_esgw (https://www.youtube.com/watch?v=NYGHbl_esgw) (7:49)
Название: OSIRIS-REx
Отправлено: tnt22 от 04.12.2018 03:31:38
ЦитатаArriving at Asteroid Bennu

NASA Goddard (https://www.youtube.com/channel/UCAY-SMFNfynqz1bdoaV8BeQ)

Опубликовано: 3 дек. 2018 г.

Asteroids are the leftover building blocks of the solar system, remnants from the dawn of planet formation that may have delivered organics and water to early Earth, and which could hold clues to the origins of life. Now, a NASA mission called OSIRIS-REx has arrived at near-Earth asteroid Bennu. It will map and study the tiny world in great detail, eventually returning a piece of Bennu to Earth in 2023.

The discoveries of OSIRIS-REx will shed light on our solar system's ancient history, and help pave the way for future exploration of other small bodies. In this short documentary, members of the OSIRIS-REx team capture the excitement of arriving at Bennu and look forward to the discoveries ahead.
https://www.youtube.com/watch?v=OO_nPW-9vsAhttps://www.youtube.com/watch?v=OO_nPW-9vsA (https://www.youtube.com/watch?v=OO_nPW-9vsA) (6:39)
Название: OSIRIS-REx
Отправлено: tnt22 от 04.12.2018 03:53:59
ЦитатаSpacecraft Arrives at Asteroid to Investigate Origin of our Solar System

NASA Video (https://www.youtube.com/channel/UC_aP7p621ATY_yAa8jMqUVA)

Опубликовано: 3 дек. 2018 г.

NASA's Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft rendezvoused with asteroid, Bennu, on Monday, Dec. 3.

OSIRIS-REx launched in September 2016 and has been slowly approaching Bennu. The spacecraft will spend almost a year surveying the asteroid with five scientific instruments with the goal of selecting a location that is safe and scientifically interesting to collect the sample of the asteroid. OSIRIS-REx will return the sample to Earth in September 2023.
https://www.youtube.com/watch?v=JVce3J__Nmkhttps://www.youtube.com/watch?v=JVce3J__Nmk (https://www.youtube.com/watch?v=JVce3J__Nmk) (29:09)
Название: OSIRIS-REx
Отправлено: tnt22 от 04.12.2018 04:12:19
Цитата(https://pbs.twimg.com/profile_images/2419305470/di1axzx9r4lgxbk6gkdc_bigger.jpeg)DutchSpace‏ @DutchSpace (https://twitter.com/DutchSpace) 8 ч. назад (https://twitter.com/DutchSpace/status/1069636554900029440)

Patch ! ....'nuf said #OSIRISRex (https://twitter.com/hashtag/OSIRISRex?src=hash) @OSIRISREx (https://twitter.com/OSIRISREx)

(https://pbs.twimg.com/media/Dtgcu7gXQAAIjyr.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 04.12.2018 04:25:40
https://www.asteroidmission.org/bennu_approach_full/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2018/12/Bennu_Approach_Full.gif)

Final Approach to Bennu

This set of images shows the OSIRIS-REx spacecraft's view of Bennu during the final phase of its journey to the asteroid. From Aug. 17 through Nov. 27 the spacecraft's PolyCam camera imaged Bennu almost daily as the spacecraft traveled 1.4 million miles (2.2 million km) toward the asteroid. The final images were obtained from a distance of around 40 miles (65 km). During this period, OSIRIS-REx completed four maneuvers slowing the spacecraft's velocity from approximately 1,100 mph (491 m/sec) to 0.10 mph (0.04 m/sec) relative to Bennu, which resulted in the slower approach speed at the end of the video.

Date Taken: Aug. 17 to Nov. 27, 2018

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 04.12.2018 04:26:58
Цитата(https://pbs.twimg.com/profile_images/1000084829449408512/6MzM9qW8_bigger.jpg)Jim Bridenstine‏Подлинная учетная запись @JimBridenstine (https://twitter.com/JimBridenstine) 8 ч. назад (https://twitter.com/JimBridenstine/status/1069647563823951874)

After a two year journey, our @OSIRISREx (https://twitter.com/OSIRISREx) spacecraft has reached the asteroid Bennu! OSIRIS-REx will now begin flying around Bennu in preparation to collect a sample and bring it back to Earth. Congratulations to the OSIRIS-REx team! #WelcomeToBennu (https://twitter.com/hashtag/WelcomeToBennu?src=hash)

(https://pbs.twimg.com/media/DtgmyhkXoAA0Ytb.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 04.12.2018 04:49:53
Цитата(https://pbs.twimg.com/profile_images/829884026/091004-780610_bigger.jpg)Chris B - NSF‏ @NASASpaceflight (https://twitter.com/NASASpaceflight) 3 мин. назад (https://twitter.com/NASASpaceflight/status/1069769475417878528)

ARTICLE:

OSIRIS-REx Arrives at Asteroid Bennu -

https://www.nasaspaceflight.com/2018/12/osiris-rex-arrives-asteroid-bennu/ ... (https://t.co/GtgNBw8cSj)

Marking the event and the milestones to come. By Justin Davenport (@Bubbinski (https://twitter.com/Bubbinski))

(https://pbs.twimg.com/media/DtiVfhEWwAYEjur.jpg)
(https://pbs.twimg.com/media/DtiVjcQWkAISURk.jpg)
(https://pbs.twimg.com/media/DtiVmK2W0AI8MmQ.jpg)
(https://pbs.twimg.com/media/DtiVn73W4AAaV5X.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 04.12.2018 15:29:12
https://www.nasa.gov/feature/goddard/2018/osiris-rex-approach
ЦитатаDec. 3, 2018

OSIRIS-REx Arrives at Bennu

After traveling through space for more than two years and over two billion kilometers, NASA's Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft arrived at its destination, asteroid Bennu, on Monday, Dec. 3, 2018. The spacecraft will spend almost a year surveying the asteroid with five scientific instruments with the goal of selecting a location that is safe and scientifically interesting to collect the sample. OSIRIS-REx will return the sample to Earth in September 2023.

Asteroid Rotation

(https://www.nasa.gov/sites/default/files/styles/full_width/public/thumbnails/image/arrival-bennu-full-rotation.gif?itok=wkOuq_Ow) (https://www.nasa.gov/sites/default/files/thumbnails/image/arrival-bennu-full-rotation.gif)
This series of images taken by the OSIRIS-REx spacecraft shows Bennu in one full rotation from a distance of around 50 miles (80 km). The spacecraft's PolyCam camera obtained the thirty-six 2.2-millisecond frames over a period of four hours and 18 minutes.
Credits: NASA's Goddard Space Flight Center/University of Arizona


Bennu Approach Fly In

(https://www.nasa.gov/sites/default/files/styles/full_width/public/thumbnails/image/approach_full.gif?itok=B26u5vDU) (https://www.nasa.gov/sites/default/files/thumbnails/image/approach_full.gif)
This picture shows the OSIRIS-REx spacecraft's view of Bennu during the final phase of its journey to the asteroid. From Aug. 17 through Nov. 27 the spacecraft's PolyCam camera imaged Bennu almost daily as the spacecraft traveled 1.4 million miles (2.2 million km) toward the asteroid. The final images were obtained from a distance of around 40 miles (65 km). During this period, OSIRIS-REx completed four maneuvers slowing the spacecraft's velocity from approximately 1,100 mph (491 m/sec) to 0.10 mph (0.04 m/sec) relative to Bennu, which resulted in the slower approach speed at the end of the video.
Credits: NASA's Goddard Space Flight Center/University of Arizona


Last Updated: Dec. 4, 2018
Editor: Sara Blumberg
Название: OSIRIS-REx
Отправлено: tnt22 от 04.12.2018 15:33:15
https://ria.ru/science/20181204/1541891499.html
ЦитатаНАСА сняло на видео самый опасный для Земли астероид
09:17 04.12.2018 (обновлено: 11:19 04.12.2018)

(https://cdn2.img.ria.ru/images/154188/02/1541880251.jpg) (https://cdn2.img.ria.ru/images/154188/02/1541880241.jpg)
© NASA / Goddard/University of Arizona (http://www.nasa.gov/)

МОСКВА, 4 дек -- РИА Новости. Космическое агентство опубликовало (https://twitter.com/NASA/status/1069720968266952711) видео вращения астероида Бенну, который считают потенциально опасным для Земли.

Полное вращение Бенну сняли с помощью межпланетной станции OSIRIS-REx, предназначенной для доставки образцов грунта с астероида. Аппарат пролетел более двух миллиардов миль за два года.

Как сообщает НАСА, OSIRIS-REx будет изучать астероид примерно год, затем космический зонд возьмет образцы Бенну. Возвращение аппарата на Землю запланировано на сентябрь 2023-го.

Космическое тело размером 500 метров открыли ученые из Массачусетского технологического института. По расчетам астрономов, оно сблизится с нашей планетой в 2182 году. С 2013-го Бенну считается главным потенциально опасным объектом для Земли -- после того как этого "звания" лишился астероид Апофис.
Название: OSIRIS-REx
Отправлено: tnt22 от 05.12.2018 04:56:53
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 9 ч. назад (https://twitter.com/OSIRISREx/status/1070001164987449344)

I'm a polar explorer! I just flew over Bennu's north pole at a distance of 4.4 miles (7 km) -- my closest approach to the asteroid yet. Here's a look at the path I'm taking around Bennu over next few weeks: https://bit.ly/2DGKTHm  (https://t.co/kpaWjAu2Ri)

(https://pbs.twimg.com/media/Dtln8_iVYAAj-Yj.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 05.12.2018 05:06:55
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 8 ч. назад (https://twitter.com/OSIRISREx/status/1070009162900226048)

Now that I've arrived, it's time to get this asteroid mapped.

For the first time today I'm using OLA, my laser altimeter from @CSA (https://twitter.com/CSA). OLA's laser ranging data will be used to make 3D maps of Bennu ... giving us an understanding of the asteroid's shape:

https://bit.ly/2KU2MnB  (https://t.co/2rKpv6Myw2)

https://video.twimg.com/ext_tw_video/1070009009187344385/pu/vid/1280x720/hJ_oQEWg0lixNVxl.mp4 (https://video.twimg.com/ext_tw_video/1070009009187344385/pu/vid/1280x720/hJ_oQEWg0lixNVxl.mp4) (0:06 (https://video.twimg.com/ext_tw_video/1070009009187344385/pu/vid/1280x720/hJ_oQEWg0lixNVxl.mp4))
Название: OSIRIS-REx
Отправлено: tnt22 от 05.12.2018 13:17:11
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 11:59 (https://twitter.com/OSIRISREx/status/1070044957912645632) - 4 дек. 2018 г.

Current status: pinging an asteroid with a laser. (https://abs.twimg.com/emoji/v2/72x72/1f6f0.png) (https://abs.twimg.com/emoji/v2/72x72/1f51b.png) (https://abs.twimg.com/emoji/v2/72x72/2604.png)
Цитата(https://pbs.twimg.com/profile_images/2866057095/14dbb2a0dc110bd49b287528fff51d80_bigger.jpeg)CanadianSpaceAgency‏Подлинная учетная запись @csa_asc (https://twitter.com/csa_asc) 11:24 (https://twitter.com/csa_asc/status/1070036189846093825) - 4 дек. 2018 г.

Fire the laser! Today, Canada's @OSIRISREx (https://twitter.com/OSIRISREx) laser instrument OLA (built by @MDA_maxar (https://twitter.com/MDA_maxar)) begins its year-long quest to map asteroid Bennu. To find out more about Canada's role: http://ow.ly/zkww30mRBUW  (https://t.co/76UoGpOU3D).

(https://pbs.twimg.com/media/DtmIPmdXgAUygw0.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 05.12.2018 13:19:57
https://www.asteroidmission.org/20181203_mapcam/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2018/12/20181203_mapcam.gif)

MapCam Images Bennu on Arrival Day

On Dec. 3, OSIRIS-REx's MapCam imager acquired this set of optical navigation images seven hours before the spacecraft's arrival maneuver. These eight images were taken over the span of one minute and are the first Bennu images obtained at a high phase angle - in this case 80° between the spacecraft, the asteroid and the Sun. The spacecraft's range to Bennu was 12 miles (19 km), and the asteroid spanned about 380 pixels in the camera's field of view.

Date Taken: Dec. 3, 2018

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 09.12.2018 09:56:40
https://www.asteroidmission.org/?latest-news=nasas-osiris-rex-spacecraft-arrives-asteroid-bennu
Цитата
NASA'S OSIRIS-REx Spacecraft Arrives at Asteroid Bennu
December 3, 2018 - NASA's Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft completed its 1.2 billion-mile (2 billion-kilometer) journey to arrive at the asteroid Bennu Monday. The spacecraft executed a maneuver that transitioned it from flying toward Bennu to operating around the asteroid.

(https://www.asteroidmission.org/wp-content/uploads/2018/12/Bennu_Full_Rotation50Miles.gif) (https://www.asteroidmission.org/?attachment_id=12182#main)
This series of images taken by the OSIRIS-REx spacecraft shows Bennu in one full rotation from a distance of around 50 miles (80 km). The spacecraft's PolyCam camera obtained the 36 2.2-millisecond frames over a period of four hours and 18 minutes. Credit: NASA/Goddard/University of Arizona

Now, at about 11.8 miles (19 kilometers) from Bennu's Sun-facing surface, OSIRIS-REx will begin a preliminary survey of the asteroid. The spacecraft will commence flyovers of Bennu's north pole, equatorial region, and south pole, getting as close as nearly 4 miles (7 kilometers) above Bennu during each flyover.

The primary science goals of this survey are to refine estimates of Bennu's mass and spin rate, and to generate a more precise model of its shape. The data will help determine potential sites for later sample collection.
OSIRIS-REx's mission will help scientists investigate how planets formed and how life began, as well as improve our understanding of asteroids that could impact Earth. Asteroids are remnants of the building blocks that formed the planets and enabled life. Those like Bennu contain natural resources, such as water, organics and metals. Future space exploration and economic development may rely on asteroids for these materials.

"As explorers, we at NASA have never shied away from the most extreme challenges in the solar system in our quest for knowledge," said Lori Glaze, acting director for NASA's Planetary Science Division. "Now we're at it again, working with our partners in the U.S. and Canada to accomplish the Herculean task of bringing back to Earth a piece of the early solar system."

The mission's navigation team will use the preliminary survey of Bennu to practice the delicate task of navigating around the asteroid. The spacecraft will enter orbit around Bennu on Dec. 31 -thus making Bennu, which is only about 1,600 feet (492 meters) across -- or about the length of five football fields -- the smallest object ever orbited by a spacecraft. It's a critical step in OSIRIS-REx's years-long quest to collect and eventually deliver at least two ounces (60 grams) of regolith -- dirt and rocks -- from Bennu to Earth.

Starting in October, OSIRIS-REx performed a series of braking maneuvers to slow the spacecraft down as it approached Bennu. These maneuvers also targeted a trajectory to set up Monday's maneuver, which initiates the first north pole flyover and marks the spacecraft's arrival at Bennu.

"The OSIRIS-REx team is proud to cross another major milestone off our list -- asteroid arrival," said Dante Lauretta, OSIRIS-REx principal investigator at the University of Arizona, Tucson. "Initial data from the approach phase show this object to have exceptional scientific value. We can't wait to start our exploration of Bennu in earnest. We've been preparing for this moment for years, and we're ready."

OSIRIS-REx mission marks many firsts in space exploration. It will be the first U.S. mission to carry samples from an asteroid back to Earth and the largest sample returned from space since the Apollo era. It's the first to study a primitive B-type asteroid, which is an asteroid that's rich in carbon and organic molecules that make up life on Earth. It is also the first mission to study a potentially hazardous asteroid and try to determine the factors that alter their courses to bring them close to Earth.

"During our approach toward Bennu, we have taken observations at much higher resolution than were available from Earth," said Rich Burns, the project manager of OSIRIS-REx at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "These observations have revealed an asteroid that is both consistent with our expectations from ground-based measurements and an exceptionally interesting small world. Now we embark on gaining experience flying our spacecraft about such a small body."

When OSIRIS-REx begins to orbit Bennu at the end of this month, it will come close to approximately three quarters of a mile (1.25 kilometers) to its surface. In February 2019, the spacecraft begins efforts to globally map Bennu to determine the best site for sample collection. After the collection site is selected, the spacecraft will briefly touch the surface of Bennu to retrieve a sample. OSIRIS-REx is scheduled to return the sample to Earth in September 2023.

Goddard provides overall mission management, systems engineering and the safety and mission assurance for OSIRIS-REx. Dante Lauretta of the University of Arizona, Tucson, is the principal investigator, and the University of Arizona also leads the science team and the mission's science observation planning and data processing. Lockheed Martin Space in Denver built the spacecraft and is providing flight operations. Goddard and KinetX Aerospace are responsible for navigating the OSIRIS-REx spacecraft. OSIRIS-REx is the third mission in NASA's New Frontiers Program, which is managed by NASA's Marshall Space Flight Center in Huntsville, Alabama for the agency's Science Mission Directorate in Washington.
Название: OSIRIS-REx
Отправлено: tnt22 от 09.12.2018 10:05:26
https://www.asteroidmission.org/osiris-rex-agu-2018/
Цитата

OSIRIS-REx at AGU 2018

(https://www.asteroidmission.org/wp-content/uploads/2018/12/AGUPressConferenceCard-1024x576.png) (https://www.asteroidmission.org/osiris-rex-agu-2018/agupressconferencecard/#main)

Get ready for some asteroid science. Now that OSIRIS-REx has arrived at Bennu (https://www.asteroidmission.org/?latest-news=nasas-osiris-rex-spacecraft-arrives-asteroid-bennu), the mission team will be presenting the initial results of their scientific studies of the asteroid during the spacecraft's Approach Phase. The highlights will be discussed at a press conference on Dec. 10 at the American Geophysical Union's fall meeting in Washington, DC. For conference attendees, three special scientific sessions in collaboration with JAXA's Hayabusa2 mission will explore the early results from both missions in more detail on Dec. 11 and 12 (schedule below).

Experts from the OSIRIS-REx mission team will also answer questions from the public via Twitter (https://www.asteroidmission.org/bennu-twitter-chat-agu-2018/) from 3 - 4 pm ET on Dec. 11. Use the hashtag #BennuChat on Twitter to submit your question.
 
PRESS CONFERENCE

Welcome to Bennu: First asteroid science data obtained by the OSIRIS-REx mission
Monday, 10 December
2:00 pm ET
Watch the live stream (http://live.projectionnet.com/AGUPress/FM2018.aspx)
Marriott Marquis Shaw/LeDroit Park Room (Level M3)
In August, NASA's OSIRIS-REx spacecraft caught its first view of the asteroid Bennu. Since then, the mission team has been learning new information about this small world almost daily. This briefing will cover the first Bennu science discovered by the mission, to include the updated shape model, resolved imaging, spectral and thermal properties, as well as how this new information compares to the Bennu data gathered from Earth.

Participants:
Jeff Grossman, NASA Headquarters, Washington, D.C.
Dante Lauretta, University of Arizona, Tucson, Arizona
Michael Nolan, University of Arizona, Tucson, Arizona
Amy Simon, NASA Goddard Space Flight Center, Greenbelt, Maryland

Related Sessions: P21A (https://agu.confex.com/agu/fm18/meetingapp.cgi/Session/60107), P22A (https://agu.confex.com/agu/fm18/meetingapp.cgi/Session/60113), P33C (https://agu.confex.com/agu/fm18/meetingapp.cgi/Session/44067)
 
ORAL SESSIONS

P21A (https://agu.confex.com/agu/fm18/meetingapp.cgi/Session/60107): A First Look at 162173 Ryugu and 101955 Bennu: Hayabusa 2 and OSIRIS-REx Arrive at Their Respective Target Asteroids, Part I
Tuesday, 11 December 2018
8:00 - 10:00 am ET
Walter E Washington Convention Center - 207A

P22A (https://agu.confex.com/agu/fm18/meetingapp.cgi/Session/60113): A First Look at 162173 Ryugu and 101955 Bennu: Hayabusa 2 and OSIRIS-REx Arrive at Their Respective Target Asteroids, Part II
Tuesday, 11 December 2018
10:20 - 12:20 am ET
Walter E. Washington Convention Center - 207A
 
TWITTER Q&A

On Tuesday, Dec. 11 from 3:00 to 4:00 pm ET (1:00 to 2:00 pm MT), experts from the OSIRIS-REx team will answer questions on Twitter about the mission and the discoveries we have made about Bennu so far. Use the hashtag #BennuChat on Twitter to submit your questions.

What: Experts from the OSIRIS-REx mission will answer questions about asteroid Bennu and what's next for OSIRIS-REx
When: Tue. Dec. 11, 2018 3:00 -4:00 pm ET
Where: Use the hashtag #BennuChat on Twitter
Who: Mission experts including:
    [/li]
  • Dante Lauretta (https://osirisrex.arizona.edu/our-team) - OSIRIS-REx Principal Investigator and Professor, University of Arizona Lunar and Planetary Lab
  • Jason Dworkin (https://solarsystem.nasa.gov/people/290/jason-dworkin/) - OSIRIS-REx Project Scientist, NASA's Goddard Space Flight Center
  • Vicky Hamilton (http://www.boulder.swri.edu/~hamilton/VEH/Home.html) - OSIRIS-REx Lead Spectral Scientist and OTES Deputy Instrument Scientist, Southwest Research Institute
  • Carl Hergenrother (https://solarsystem.nasa.gov/people/288/carl-hergenrother/) - OSIRIS-REx Astronomy Lead, University of Arizona
  • Keara Burke (http://arizonaalumni.com/article/osiris-rex-arrives-asteroid-bennu) - OSIRIS-REx Image Processing Intern and Undergraduate Student, University of Arizona
POSTER SESSION

P33C (https://agu.confex.com/agu/fm18/meetingapp.cgi/Session/44067): A First Look at 162173 Ryugu and 101955 Bennu: Hayabusa 2 and OSIRIS-REx Arrive at Their Respective Target Asteroids, Part III - Posters

Wednesday, 12 December 2018
1:40 - 6:00 pm ET
Walter E. Washington Convention Center - Hall A-C (Poster Hall)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 13:24:19
http://www.hayabusa2.jaxa.jp/en/topics/20181210e_OSIRISREx/
ЦитатаThe US asteroid explorer, OSIRIS-REx, arrived at its destination, asteroid Bennu, on December 3, 2018 (U.S. time) !

We sent the team an arrival celebration video letter from all of us at JAXA and the Hayabusa2 project.

Message from the Director General of JAXA's Institute of Space and Astronautical Sciences (ISAS), Hitoshi Kuninaka
http://www.hayabusa2.jaxa.jp/en/topics/20181210e_OSIRISREx/img/s640_Hitoshi_KUNINAKA_2b.mp4 (http://www.hayabusa2.jaxa.jp/en/topics/20181210e_OSIRISREx/img/s640_Hitoshi_KUNINAKA_2b.mp4)
Message from the Hayabusa2 Project Manager, Yuichi Tsuda
http://www.hayabusa2.jaxa.jp/en/topics/20181210e_OSIRISREx/img/s640_YuuichiTSUDA.mp4 (http://www.hayabusa2.jaxa.jp/en/topics/20181210e_OSIRISREx/img/s640_YuuichiTSUDA.mp4)
Hayabusa2 project
2018.12.10
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 22:38:22
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91667)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 22:38:34
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91668)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 22:38:50
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91669) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91670) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91671) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91672)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 22:40:04
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91673) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91674) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91675) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91676)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 22:43:29
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91677) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91678) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91679) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91680) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91681) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91682)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 22:44:13
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91683) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91684) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91685) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91686) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91687)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 22:44:57
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91688) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91689) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91690)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 22:46:10
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91691)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 22:59:38
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91695) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91696) (https://testforum.novosti-kosmonavtiki.ru/forum/file/91697)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 23:03:23
Брифинг завершен
(https://testforum.novosti-kosmonavtiki.ru/forum/file/91698)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 23:07:48
Цитата(https://pbs.twimg.com/profile_images/964295333252665344/tTCF1uKz_bigger.jpg)Chris G - NSF‏ @ChrisG_NSF (https://twitter.com/ChrisG_NSF) 56 мин. назад (https://twitter.com/ChrisG_NSF/status/1072206074915233792)

WATER on asteroid Bennu! Amazing find by @OSIRISREx (https://twitter.com/OSIRISREx) NASA spacecraft!
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 23:11:35
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 1 ч. назад (https://twitter.com/OSIRISREx/status/1072205310515994625)

Here it is. The highest resolution imagery of #asteroid (https://twitter.com/hashtag/asteroid?src=hash) Bennu so far: A mosaic of 12 images captured with PolyCam on Dec. 2 from about 15 miles (24 km) away. Each pixel represents about 13 inches (33 cm) on Bennu's surface. #WelcomeToBennu (https://twitter.com/hashtag/WelcomeToBennu?src=hash) #AGU18 (https://twitter.com/hashtag/AGU18?src=hash) http://bit.ly/BennuSci  (https://t.co/In5Pow2lgt)

(https://pbs.twimg.com/media/DuE4GZaV4AE_e8y.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 23:12:56
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 1 ч. назад (https://twitter.com/OSIRISREx/status/1072207000203862016)

Which brings us to something big... We found water on Bennu! (https://abs.twimg.com/emoji/v2/72x72/2604.png)(https://abs.twimg.com/emoji/v2/72x72/1f4a6.png) Two of my spectrometers - OVIRS and OTES - detected the chemical fingerprints of water bound up in hydrated clay minerals over a large part of the asteroid's surface. #WelcomeToBennu (https://twitter.com/hashtag/WelcomeToBennu?src=hash) #AGU18 (https://twitter.com/hashtag/AGU18?src=hash) https://go.nasa.gov/2C40bop  (https://t.co/PJC8agBLEE)

(https://pbs.twimg.com/media/DuE-Rt6WoAMjyPt.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 23:16:01
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 1 ч. назад (https://twitter.com/OSIRISREx/status/1072207371232002054)

The OVIRS and OTES spectra of asteroid Bennu also mirror those of carbonaceous chondrite meteorites that contain both water and organic compounds - exactly the type of material we hope to return in 2023! #WelcomeToBennu (https://twitter.com/hashtag/WelcomeToBennu?src=hash) #AGU18 (https://twitter.com/hashtag/AGU18?src=hash)

(https://pbs.twimg.com/media/DuE-vLRXcAE_5QL.jpg)


1 ч. назад (https://twitter.com/OSIRISREx/status/1072207618016464898)

While Bennu is too small to have free-flowing water or chunks of ice, our data suggest the asteroid's larger parent body hosted liquid water in the distant past. It also means that mining water from asteroids like Bennu may be possible on future missions. #WelcomeToBennu (https://twitter.com/hashtag/WelcomeToBennu?src=hash) #AGU18 (https://twitter.com/hashtag/AGU18?src=hash)

(https://pbs.twimg.com/media/DuE--DaX4AgZu9t.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 23:17:32
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 56 мин. назад (https://twitter.com/OSIRISREx/status/1072209295104712704)

3D-printed versions of the old and new shape models for #asteroid (https://twitter.com/hashtag/asteroid?src=hash) Bennu show how accurate the early, ground-based model actually was. Bennu's size, shape, spin rate and orientation are all very close to what the team predicted. #WelcomeToBennu (https://twitter.com/hashtag/WelcomeToBennu?src=hash) #AGU18 (https://twitter.com/hashtag/AGU18?src=hash)

(https://pbs.twimg.com/media/DuFAXSFXgAEvbS1.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 23:21:35
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 59 мин. назад (https://twitter.com/OSIRISREx/status/1072209608381554688)

My close-range images of Bennu are beginning to reveal geological features on the asteroid's surface, such as boulders and craters. Bennu has some rugged terrain to explore. #WelcomeToBennu (https://twitter.com/hashtag/WelcomeToBennu?src=hash) #AGU18 (https://twitter.com/hashtag/AGU18?src=hash)

(https://pbs.twimg.com/media/DuFAyx7WoAE-pnM.jpg)


57 мин. назад (https://twitter.com/OSIRISREx/status/1072210101736480768)

On Dec. 2 at a range of 15 miles (24 km), PolyCam snapped this image showing three different boulder features on Bennu, each circled in white and then magnified. (https://abs.twimg.com/emoji/v2/72x72/1f4f8.png) (https://abs.twimg.com/emoji/v2/72x72/1f50d.png)Their widths are about 52 feet (16 m), 115 feet (35 m), and 102 feet (31 m), respectively. #WelcomeToBennu (https://twitter.com/hashtag/WelcomeToBennu?src=hash) #AGU18 (https://twitter.com/hashtag/AGU18?src=hash)

(https://pbs.twimg.com/media/DuFBKrCXcAQfCCM.jpg)
(https://pbs.twimg.com/media/DuFBQBHX4AAyGRe.jpg)
(https://pbs.twimg.com/media/DuFBTMFW0AEW48i.jpg)
(https://pbs.twimg.com/media/DuFBUhSXQAEYrgf.jpg)
55 мин. назад (https://twitter.com/OSIRISREx/status/1072210718877999106)

My team is keeping an eye out for areas on Bennu with loose rock and dirt that are potential places to collect a sample. (https://abs.twimg.com/emoji/v2/72x72/1f440.png) On Dec. 2, PolyCam imaged this crater, which is about 66 feet (20 m) across and appears to have loose material in the bottom. #WelcomeToBennu (https://twitter.com/hashtag/WelcomeToBennu?src=hash) #AGU18 (https://twitter.com/hashtag/AGU18?src=hash)

(https://pbs.twimg.com/media/DuFBikVWwAELFop.jpg)
(https://pbs.twimg.com/media/DuFBnReW4AE7gim.jpg)
(https://pbs.twimg.com/media/DuFBphyWwAA6uBS.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 23:23:08
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 55 мин. назад (https://twitter.com/OSIRISREx/status/1072211161452634114)

Early data fr om Bennu show that I'm exactly wh ere I need to be to achieve our science goals. The biggest surprise so far is the number and size of boulders on Bennu's surface, but my team is more than ready to tackle that challenge. Let the adventure begin! #WelcomeToBennu (https://twitter.com/hashtag/WelcomeToBennu?src=hash) #AGU18 (https://twitter.com/hashtag/AGU18?src=hash)

(https://pbs.twimg.com/media/DuFCNHvXQAEIlHa.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 23:26:47
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 36 мин.36 минут назад (https://twitter.com/OSIRISREx/status/1072216202628513793)

(https://abs.twimg.com/emoji/v2/72x72/2604.png)Beautiful new shape model of Bennu? (https://abs.twimg.com/emoji/v2/72x72/2705.png)
(https://abs.twimg.com/emoji/v2/72x72/1f4a6.png) Water bound up in the clay minerals on the asteroid's surface? (https://abs.twimg.com/emoji/v2/72x72/2705.png)
(https://abs.twimg.com/emoji/v2/72x72/1f4f8.png) Awesome new imagery showing its rugged terrain? (https://abs.twimg.com/emoji/v2/72x72/2705.png)

Read more about the discoveries my team has made about Bennu so far: http://bit.ly/BennuSci  (https://t.co/In5Pow2lgt) #WelcomeToBennu (https://twitter.com/hashtag/WelcomeToBennu?src=hash) #AGU18 (https://twitter.com/hashtag/AGU18?src=hash)

https://video.twimg.com/tweet_video/DuFC9D6WkAAqUEY.mp4 (https://video.twimg.com/tweet_video/DuFC9D6WkAAqUEY.mp4)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 23:32:56
https://www.nasa.gov/press-release/nasa-s-newly-arrived-osiris-rex-spacecraft-already-discovers-water-on-asteroid

https://www.asteroidmission.org/?latest-news=nasas-newly-arrived-osiris-rex-spacecraft-already-discovers-water-asteroid
Цитата
NASA's Newly Arrived OSIRIS-REx Spacecraft Already Discovers Water on Asteroid

December 10, 2018 - Recently analyzed data fr om NASA's Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) mission has revealed water locked inside the clays that make up its scientific target, the asteroid Bennu.

(https://www.asteroidmission.org/wp-content/uploads/2018/12/Twelve-Image-PolyCam-Mosaic-12-2-18.png) (https://www.asteroidmission.org/?attachment_id=12476#main)
This mosaic image of asteroid Bennu is composed of 12 PolyCam images collected on Dec. 2 by the OSIRIS-REx spacecraft from a range of 15 miles (24 km).
Credit: NASA/Goddard/University of Arizona


During the mission's approach phase, between mid-August and early December, the spacecraft traveled 1.4 million miles (2.2 million km) on its journey from Earth to arrive at a location 12 miles (19 km) from Bennu on Dec. 3. During this time, the science team on Earth aimed three of the spacecraft's instruments towards Bennu and began making the mission's first scientific observations of the asteroid. OSIRIS-REx is NASA's first asteroid sample return mission.

Data obtained from the spacecraft's two spectrometers, the OSIRIS-REx Visible and Infrared Spectrometer (OVIRS) and the OSIRIS-REx Thermal Emission Spectrometer (OTES), reveal the presence of molecules that contain oxygen and hydrogen atoms bonded together, known as "hydroxyls." The team suspects that these hydroxyl groups exist globally across the asteroid in water-bearing clay minerals, meaning that at some point, Bennu's rocky material interacted with water. While Bennu itself is too small to have ever hosted liquid water, the finding does indicate that liquid water was present at some time on Bennu's parent body, a much larger asteroid.
"The presence of hydrated minerals across the asteroid confirms that Bennu, a remnant from early in the formation of the solar system, is an excellent specimen for the OSIRIS-REx mission to study the composition of primitive volatiles and organics," said Amy Simon, OVIRS deputy instrument scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "When samples of this material are returned by the mission to Earth in 2023, scientists will receive a treasure trove of new information about the history and evolution of our solar system."

Additionally, data obtained from the OSIRIS-REx Camera Suite (OCAMS) corroborate ground-based telescopic observations of Bennu and confirm the original model developed in 2013 by OSIRIS-REx Science Team Chief Michael Nolan and collaborators. That model closely predicted the asteroid's actual shape, with Bennu's diameter, rotation rate, inclination, and overall shape presented almost exactly as projected.

(https://www.asteroidmission.org/wp-content/uploads/2018/12/Bennu-Rotation-3-single.gif) (https://www.asteroidmission.org/?attachment_id=12536#main)
This preliminary shape model of asteroid Bennu was created from a compilation of images taken by OSIRIS-REx's PolyCam camera during the spacecraft's approach toward Bennu during the month of November. This 3D shape model shows features on Bennu as small as six meters.
Credit: NASA/Goddard/University of Arizona


One outlier from the predicted shape model is the size of the large boulder near Bennu's south pole. The ground-based shape model calculated this boulder to be at least 33 feet (10 meters) in height. Preliminary calculations from OCAMS observations show that the boulder is closer to 164 feet (50 meters) in height, with a width of approximately 180 feet (55 meters).

Bennu's surface material is a mix of very rocky, boulder-filled regions and a few relatively smooth regions that lack boulders. However, the quantity of boulders on the surface is higher than expected. The team will make further observations at closer ranges to more accurately assess wh ere a sample can be taken on Bennu to later be returned to Earth.

"Our initial data show that the team picked the right asteroid as the target of the OSIRIS-REx mission. We have not discovered any insurmountable issues at Bennu so far," said Dante Lauretta, OSIRIS-REx principal investigator at the University of Arizona, Tucson. "The spacecraft is healthy and the science instruments are working better than required. It is time now for our adventure to begin."

The mission currently is performing a preliminary survey of the asteroid, flying the spacecraft in passes over Bennu's north pole, equator, and south pole at ranges as close as 4.4 miles (7 km) to better determine the asteroid's mass. The mission's scientists and engineers must know the mass of the asteroid in order to design the spacecraft's insertion into orbit because mass affects the asteroid's gravitational pull on the spacecraft. Knowing Bennu's mass will also help the science team understand the asteroid's structure and composition.

This survey also provides the first opportunity for the OSIRIS-REx Laser Altimeter (OLA), an instrument contributed by the Canadian Space Agency, to make observations, now that the spacecraft is in proximity to Bennu.

The spacecraft's first orbital insertion is scheduled for Dec. 31, and OSIRIS-REx will remain in orbit until mid-February 2019, when it exits to initiate another series of flybys for the next survey phase. During the first orbital phase, the spacecraft will orbit the asteroid at a range of 0.9 miles (1.4 km) to 1.24 miles (2.0 km) from the center of Bennu -- setting new records for the smallest body ever orbited by a spacecraft and the closest orbit of a planetary body by any spacecraft.

Goddard provides overall mission management, systems engineering and the safety and mission assurance for OSIRIS-REx. Dante Lauretta of the University of Arizona, Tucson, is the principal investigator, and the University of Arizona also leads the science team and the mission's science observation planning and data processing. Lockheed Martin Space Systems in Denver built the spacecraft and is providing flight operations. Goddard and KinetX Aerospace are responsible for navigating the OSIRIS-REx spacecraft. OSIRIS-REx is the third mission in NASA's New Frontiers Program. NASA's Marshall Space Flight Center in Huntsville, Alabama, manages the agency's New Frontiers Program for the Science Mission Directorate in Washington.
Название: OSIRIS-REx
Отправлено: tnt22 от 10.12.2018 23:36:06
Цитата(https://pbs.twimg.com/profile_images/829884026/091004-780610_bigger.jpg)Chris B - NSF‏ @NASASpaceflight (https://twitter.com/NASASpaceflight) 7 мин. назад (https://twitter.com/NASASpaceflight/status/1072226238838833152)

ARTICLE:
OSIRIS-REx finds water on asteroid Bennu -

https://www.nasaspaceflight.com/2018/12/osiris-rex-water-asteroid-bennu/ ... (https://t.co/lqDUb50tlZ)

- By Chris Gebhardt (@ChrisG_NSF (https://twitter.com/ChrisG_NSF))

(https://pbs.twimg.com/media/DuFPsooX4AAtHh3.jpg)
(https://pbs.twimg.com/media/DuFPuAvXgAA-cSF.jpg)
(https://pbs.twimg.com/media/DuFP13sWwAAeCsm.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 11.12.2018 10:58:23
https://tass.ru/kosmos/5896079
Цитата11 ДЕК, 01:04
Аппарат OSIRIS-REx нашел на астероиде Бенну следы воды

Речь идет о "гидросодержащих минералах", отметили в NASA

(https://phototass2.cdnvideo.ru/width/1020_b9261fa1/tass/m2/uploads/i/20181211/4892001.jpg)
Зонд OSIRIS-REx у астероида Бенну
© NASA/Goddard/University of Arizona via AP

ВАШИНГТОН, 11 декабря. /ТАСС/. Космический аппарат OSIRIS-REx обнаружил следы воды на исследуемом им астероиде Бенну. Об этом сообщило в понедельник Национальное управление США по аэронавтике и исследованию космического пространства (NASA).

Речь идет о "гидросодержащих минералах", уточнила научный сотрудник Центра космических полетов имени Годдарда в Гринбелте (штат Мэриленд) Эми Саймон. Это учреждение входит в структуру NASA и вместе с еще несколькими американскими научными центрами занимается реализацией проекта OSIRIS-REx. Как отметило NASA, о том, что на астероиде Бенну есть вода, свидетельствуют "данные, собранные двумя спектрометрами" автоматической станции OSIRIS-REx. Эти приборы выявили наличие на астероиде гидроксилов, или водных остатков, заявило американское космическое ведомство.

По его свидетельству, специалисты, привлеченные к поддержке миссии аппарата OSIRIS-REx, подозревают, что гидроксилы имеются на астероиде Бенну повсюду. Это означает, что, вероятно, когда-то в прошлом вода присутствовала на том более крупном астрономическом объекте, от которого откололся астероид Бенну, пояснило NASA. Его эксперты подчеркнули, что в силу малых размеров астероида Бенну на нем самом воды в жидком виде не было.

О проекте
Зонд OSIRIS-REx, выведенный в космос в сентябре 2016 года, оснащен несколькими приборами, в том числе фотокамерами, спектрометрами и лазерным высотомером. Аппарат пролетел 2,2 млн км и 3 декабря приблизился к астероиду Бенну на 19 км. Планируется, что затем будет предпринята операция по захвату грунта на астероиде с помощью руки-манипулятора, снабженной специальным пневматическим устройством. В общей сложности сотрудники NASA рассчитывают собрать от 60 г до 2 кг астероидного грунта.

Одна из главных целей этого проекта - получение новых данных о строении и составе астероидов, представляющих потенциальную опасность для нашей планеты. Впоследствии эти сведения могут быть использованы при организации специальных миссий по предотвращению астероидной угрозы. Предполагается, что пробу грунта на астероиде аппарат возьмет в середине 2020 года. А возвращение на Землю спускаемой капсулы зонда намечается на сентябрь 2023 года.

Как ожидается, изучение этой пробы грунта поможет ученым и лучше понять, как протекало формирование Солнечной системы.

Бенну диаметром около 550 м вращается по эллиптической орбите вокруг Солнца. Астрономы относят его к Аполлонам - астероидам, орбиты которых пересекают орбиту Земли. Вероятность столкновения с ним составляет 1 к 4000. Его падение на Землю было бы эквивалентно взрыву мощностью 2700 мегатонн.

OSIRIS-REx является одним из трех аппаратов, созданных экспертами NASA для запуска в дальний космос по программе New Frontiers. Два других - это межпланетная станция New Horizons, пролетевшая в 2016 году на близком расстоянии от Плутона, и автоматическая межпланетная станция Juno, при помощи которой ведутся исследования Юпитера.
Название: OSIRIS-REx
Отправлено: Theoristos от 12.12.2018 00:28:08
... Тот случай, когда последнее слово всё портит.
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2018 15:22:57
ЦитатаLIVE - NASA's Welcome to Bennu press conference

Canadian Space Agency (https://www.youtube.com/channel/UCdNtqpHlU1pCaVy2wlzxHKQ)

Прямой эфир: 10 дек. 2018 г.
https://www.youtube.com/watch?v=WRCzK8uZvoYhttps://www.youtube.com/watch?v=WRCzK8uZvoY (https://www.youtube.com/watch?v=WRCzK8uZvoY) (55:32)
Название: OSIRIS-REx
Отправлено: tnt22 от 14.12.2018 16:39:19
ЦитатаWelcome to Bennu Press Conference - First Mission Science Results

OSIRIS-REx Mission (https://www.youtube.com/channel/UCgesBEUkT8iyGssfuJm-Gnw)

Опубликовано: 12 дек. 2018 г.

At the AGU Fall 2018 meeting, members of the OSIRIS-REx science team shared highlights of their initial up-close studies of the asteroid. Highlights include: detection of water bound up in the clay minerals on the asteroid's surface, a new shape model, and new high-resolution images.
https://www.youtube.com/watch?v=qaPHXXZTkAU&feature=youtu.be (https://www.youtube.com/watch?v=qaPHXXZTkAU&feature=youtu.be)https://www.youtube.com/watch?v=qaPHXXZTkAU&feature=youtu.be (https://www.youtube.com/watch?v=qaPHXXZTkAU&feature=youtu.be) (47:00)
Название: OSIRIS-REx
Отправлено: tnt22 от 25.12.2018 20:58:46
https://www.asteroidmission.org/bennunorthpolepassdec4/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2018/12/BennuNorthPolePassDec4.gif)

Bennu North Pole Flyover

This series of MapCam images was taken over the course of about four hours and 19 minutes on Dec. 4, 2018, as OSIRIS-REx made its first pass over Bennu's north pole. The images were captured as the spacecraft was inbound toward Bennu, shortly before its closest approach of the asteroid's pole. As the asteroid rotates and grows larger in the field of view, the range to the center of Bennu shrinks from about 7.1 to 5.8 miles (11.4 to 9.3 km).

This first pass was one of five flyovers of Bennu's poles and equator that OSIRIS-REx conducted during its Preliminary Survey (https://www.asteroidmission.org/asteroid-operations/#preliminary-survey) of the asteroid.

Date Taken: Dec. 4, 2018

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 25.12.2018 21:02:02
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 23 дек. (https://twitter.com/OSIRISREx/status/1076952379843436544)

Bennu's small size (~500 m or 1,600 ft in diameter) and low gravity make navigating around the asteroid very challenging. In fact, Bennu will become the smallest planetary object ever orbited by a spacecraft when I begin orbiting it for the first time on Dec. 31. #NYE2019 (https://twitter.com/hashtag/NYE2019?src=hash) (https://abs.twimg.com/emoji/v2/72x72/1f6f0.png)(https://abs.twimg.com/emoji/v2/72x72/1f504.png)(https://abs.twimg.com/emoji/v2/72x72/2604.png)

(https://pbs.twimg.com/media/DvIOA6oUUAAVw4w.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 25.12.2018 21:03:15
ЦитатаScience in Seconds: OSIRIS-REx & New Horizons

OSIRIS-REx Mission (https://www.youtube.com/channel/UCgesBEUkT8iyGssfuJm-Gnw)

Опубликовано: 23 дек. 2018 г.

Two missions. Two small worlds. Untold discoveries await. As 2018 draws to close, NASA's OSIRIS-REx and New Horizons missions are exploring two never-before-visited small bodies: asteroid Bennu and Kuiper belt object Ultima Thule.
https://www.youtube.com/watch?v=I7IDM7Cm3LYhttps://www.youtube.com/watch?v=I7IDM7Cm3LY (https://www.youtube.com/watch?v=I7IDM7Cm3LY) (1:01)
Название: OSIRIS-REx
Отправлено: tnt22 от 27.12.2018 04:08:26
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 59 мин. назад (https://twitter.com/OSIRISREx/status/1078080205204316160)

Big milestone coming up! On #NYE19 (https://twitter.com/hashtag/NYE19?src=hash),when I go into orbit around Bennu, I'll break two records: the smallest body ever orbited by a spacecraft and the closest orbit of a planetary body by any spacecraft. For updates, follow @UALPL (https://twitter.com/UALPL) and keep an eye on http://asteroidmission.org  (https://t.co/zt2Kovamyu)

(https://pbs.twimg.com/media/DvYbH-jVAAA7yZ-.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 31.12.2018 00:11:26
Ответ к #354 (http://novosti-kosmonavtiki.ru/forum/messages/forum11/topic11903/message1825362/#message1825362)

Цитата(https://pbs.twimg.com/profile_images/771767002461376512/IQbLX3za_bigger.jpg)KinetX SNAFD‏ @KinetXSNAFD (https://twitter.com/KinetXSNAFD) 4 ч. назад (https://twitter.com/KinetXSNAFD/status/1079418273710534656)

Today our #orexnav (https://twitter.com/hashtag/orexnav?src=hash) team is finalizing the parameters for tomorrow's orbit insertion burn!
Название: OSIRIS-REx
Отправлено: tnt22 от 31.12.2018 03:30:44
Цитата(https://pbs.twimg.com/profile_images/771767002461376512/IQbLX3za_bigger.jpg)KinetX SNAFD‏ @KinetXSNAFD (https://twitter.com/KinetXSNAFD) 17 мин. назад (https://twitter.com/KinetXSNAFD/status/1079530639521509376)

@OSIRISREx (https://twitter.com/OSIRISREx) has now crossed closer to Bennu than ever before: 4.4 miles (7km) and closing on orbit insertion target.

(https://pbs.twimg.com/media/DvtDZDpUUAAZpuF.jpg)
(https://pbs.twimg.com/media/DvtDZDqVsAAfHkg.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 31.12.2018 05:35:36
Цитата(https://pbs.twimg.com/profile_images/831795999110733825/2nkoQTF6_bigger.jpg)CanberraDSN‏Подлинная учетная запись @CanberraDSN (https://twitter.com/CanberraDSN) 30 мин. назад (https://twitter.com/CanberraDSN/status/1079558041240924160)

Great way to end one year and start another.(https://abs.twimg.com/emoji/v2/72x72/1f387.png)(https://abs.twimg.com/emoji/v2/72x72/1f386.png)(https://abs.twimg.com/emoji/v2/72x72/1f389.png)(https://abs.twimg.com/emoji/v2/72x72/1f973.png)

Tonight #NYE2019 (https://twitter.com/hashtag/NYE2019?src=hash), @NASA (https://twitter.com/NASA)'s @OSIRISREx (https://twitter.com/OSIRISREx) spacecraft enters orbit at asteroid #Bennu (https://twitter.com/hashtag/Bennu?src=hash)

Then on New Year's Day, @NASANewHorizons (https://twitter.com/NASANewHorizons) aka @NewHorizons2015 (https://twitter.com/NewHorizons2015) makes its historic #UltimaFlyby (https://twitter.com/hashtag/UltimaFlyby?src=hash) of #KuiperBelt (https://twitter.com/hashtag/KuiperBelt?src=hash) object #2014MU69 (https://twitter.com/hashtag/2014MU69?src=hash) aka #UltimaThule (https://twitter.com/hashtag/UltimaThule?src=hash).

(https://pbs.twimg.com/media/DvtbcoBU8AAzF36.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 31.12.2018 15:17:53
Цитата(https://pbs.twimg.com/profile_images/771767002461376512/IQbLX3za_bigger.jpg)KinetX SNAFD‏ @KinetXSNAFD (https://twitter.com/KinetXSNAFD) 6 ч. назад (https://twitter.com/KinetXSNAFD/status/1079618761236205568)

Orbit insertion burn design has been finalized: @OSIRISREx (https://twitter.com/OSIRISREx) will fire its thrusters to enter orbit about Bennu at 19:43:55 UTC (14:43:55 EST) tomorrow, December 31st! The engines will burn for 8 seconds.

https://video.twimg.com/ext_tw_video/1079618709369409537/pu/vid/1280x720/GShislATJrHcQZK-.mp4?tag=6 (https://video.twimg.com/ext_tw_video/1079618709369409537/pu/vid/1280x720/GShislATJrHcQZK-.mp4?tag=6)
Название: OSIRIS-REx
Отправлено: tnt22 от 31.12.2018 17:34:54
ЦитатаArrival at Asteroid Bennu

OSIRIS-REx Mission (https://www.youtube.com/channel/UCgesBEUkT8iyGssfuJm-Gnw)

Опубликовано: 29 дек. 2018 г.

On Dec. 3, 2018, the OSIRIS-REx spacecraft arrived at its destination: an ancient near-Earth asteroid called Bennu. Members of the mission team reflect on what we will learn by collecting a sample from Bennu, the milestones the mission has reached so far, and the challenges ahead.

Credit: NASA's Goddard Space Flight Center
https://www.youtube.com/watch?v=f0mNByndvQUhttps://www.youtube.com/watch?v=f0mNByndvQU (https://www.youtube.com/watch?v=f0mNByndvQU) (6:39)
Название: OSIRIS-REx
Отправлено: tnt22 от 31.12.2018 18:50:10
https://spaceflightnow.com/2018/12/31/osiris-rex-bennu-orbit-insertion/
ЦитатаOSIRIS-REx ready for New Year's Eve orbit insertion burn at asteroid
December 31, 2018 (https://spaceflightnow.com/2018/12/) | Stephen Clark (https://spaceflightnow.com/author/stephen-clark/)

(https://mk0spaceflightnoa02a.kinstacdn.com/wp-content/uploads/2018/12/bennuasteroid.jpg)
This mosaic image of asteroid Bennu is composed of 12 PolyCam images collected on Dec. 2 by the OSIRIS-REx spacecraft fr om a range of 15 miles (24 kilometers). Credits: NASA/Goddard/University of Arizona

After four weeks of navigating in the vicinity of asteroid Bennu, NASA's OSIRIS-REx spacecraft is set to fire its thrusters for eight seconds Monday to slip into orbit around the carbon-rich object, making Bennu the smallest planetary body ever orbited by a spacecraft.

OSIRIS-REx arrived at Bennu on Dec. 3, ending a journey fr om Earth that lasted more than two years and spanned 1.2 billion miles (2 billion kilometers). Since then, the robotic spacecraft has surveyed the 1,600-foot-wide (492-meter) asteroid through a series of flybys as close as 4.4 miles (7 kilometers) over Bennu's north pole, south pole and equator to measure the asteroid's gravitational tug on OSIRIS-REx, which will help scientists determine the object's mass.

The mass estimate helped navigators refine the parameters of OSIRIS-REx's maneuver to enter orbit around Bennu. The craft's thrusters will ignite for 8 seconds at 2:43:55 p.m. EST (1943:55 GMT) Monday to slightly adjust OSIRIS-REx's velocity, nudging it just enough for Bennu's tenuous gravity to capture the probe into orbit.

Launched in September 2016, NASA's $1 billion Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer was built to travel to Bennu and collect samples for return to Earth.

When the solar system formed more than 4.5 billion years ago, chunks of rock and ice collided as they circled the sun like the balls on a billiard table, eventually building up planets. The leftovers became asteroids and comets, and scientists believe Bennu still harbors the basic carbon-bearing organic molecules that were present in the early solar solar system, the stuff that may have helped seed life.

The spacecraft carries three cameras -- one for long-range viewing, a color camera for mapping, and another imager to take pictures as OSIRIS-REx collects samples from the asteroid's surface. The rest of OSIRIS-REx's suite of science instruments includes a thermal emission spectrometer to detect heat coming from the asteroid, a visible infrared spectrometer to locate minerals and organic materials, a laser altimeter provided by the Canadian Space Agency to create topographic maps, and a student-built X-ray spectrometer to identify individual chemical elements present on the asteroid.

Besides revealing Bennu with high-resolution images, OSIRIS-REx has already made discoveries at the asteroid.

Data gathered by thermal emission and visible infrared spectrometer instruments -- OTES and OVIRS -- indicates clay minerals on the asteroid's surface contain hydroxyl molecules with oxygen and hydrogen molecules bonded together. This finding suggests Bennu's surface was once in contact with water, likely when the asteroid was part of a much larger parent body that was smashed to bits in a collision in the chaotic early solar system.
(https://mk0spaceflightnoa02a.kinstacdn.com/wp-content/uploads/2016/09/1472585684039.jpg)
An artist's concept of OSIRIS-REx at Bennu. Credit: Lockheed Martin

"The presence of hydrated minerals across the asteroid confirms that Bennu, a remnant from early in the formation of the solar system, is an excellent specimen for the OSIRIS-REx mission to study the composition of primitive volatiles and organics," said Amy Simon, OVIRS deputy instrument scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "When samples of this material are returned by the mission to Earth in 2023, scientists will receive a treasure trove of new information about the history and evolution of our solar system."

"Our initial data show that the team picked the right asteroid as the target of the OSIRIS-REx mission. We have not discovered any insurmountable issues at Bennu so far," said Dante Lauretta, OSIRIS-REx principal investigator at the University of Arizona, Tucson. "The spacecraft is healthy and the science instruments are working better than required. It is time now for our adventure to begin."

The first high-resolution images of Bennu taken by OSIRIS-REx revealed a miniature world containing a few relatively smooth regions without many large rocks, interspersed with boulder-filled regions that might be treacherous for the spacecraft's sample collection touch-and-go maneuver.

One prominent feature of Bennu's landscape is a large boulder protruding from the surface near the south pole. While ground-based radar images suggested the boulder to be at least 33 feet, or 10 meters, in height, OSIRIS-REx imagery indicates is closer to 164 feet, or 50 meters, tall with a width of approximately 180 feet, or 55 meters, according to NASA.

On approach to Bennu, ground controllers at Lockheed Martin in Denver -- wh ere OSIRIS-REx was built -- unlatched the probe's robotic arm from its launch restraint for the first time. Over several days, the ground team commanded the arm to bend its joints and jettison a launch cover over the sample collection mechanism, which will release compressed air during a touch-and-go maneuver to force gravel and surface material into an on-board chamber for the journey back to Earth.

(https://mk0spaceflightnoa02a.kinstacdn.com/wp-content/uploads/2018/08/Small_Bodies_Relative_Sizes_print.jpg)
This mosaic compares the size of asteroid Bennu, to scale, with other asteroids and comets visited by spacecraft. Credit: NASA/University of Arizona/ESA/JAXA

Due to the asteroid's weak gravity, OSIRIS-REx will move around Bennu at a speed of just one-tenth of a mile per hour, or about 5 centimeters per second, once in orbit. The spacecraft's first orbital phase will last until mid-February, when OSIRIS-REx will again make a series of flybys of Bennu.

During the mission's first orbital phase, OSIRIS-REx will orbit the asteroid at a range of 0.9 miles (1.4 km) to 1.24 miles (2.0 km) from the center of Bennu, setting another record for the closest distance any spacecraft has orbited to a planetary body, according to a Dec. 10 statement by NASA.

Orbital speeds are determined by the gravitational pull of the parent planet or star. For comparison, objects in low Earth orbit have to travel at around 17,500 mph (7.8 kilometers per second) to avoid falling back into the atmosphere.

"It's Bennu's size and small mass that make the navigation challenges on this mission unprecedented, really," said Michael Moreau, OSIRIS-REx flight dynamics system manager at NASA's Goddard Space Flight Center, in a conference call with reporters in August.

Comet 67P/Churyumov-Gerasimenko, which was orbited by the European Space Agency's Rosetta spacecraft from 2014 through 2016, is between five and 10 times larger than Bennu, depending on how you measure. Asteroid Ryugu, wh ere Japan's Hayabusa 2 spacecraft is currently exploring, is nearly twice the size of Bennu, and Hayabusa 2 will not enter orbit around it.

OSIRIS-REx will orbit and explore Bennu for more than a year, allowing scientists and mission planners to examine the asteroid and determine a safe location for the craft's touch-and-go descent in July 2020 to snag samples from the asteroid. The spacecraft will depart Bennu and head back to Earth, releasing its sample carrier for re-entry and landing in Utah in September 2023.

Scientists will take the samples to an ultra-clean facility at NASA's Johnson Space Center in Houston for detailed analysis.
Название: OSIRIS-REx
Отправлено: tnt22 от 31.12.2018 18:53:15
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 5 мин. назад (https://twitter.com/OSIRISREx/status/1079765598689669121)

Today is the day! In T-4 hours I'll be going into orbit around #asteroid (https://twitter.com/hashtag/asteroid?src=hash) Bennu for the first time!

Bennu will be the smallest body ever orbited by a spacecraft, and my path around it will mark the closest orbit of a planetary body by any spacecraft. #HappyNewYear2019 (https://twitter.com/hashtag/HappyNewYear2019?src=hash)(https://abs.twimg.com/hashflags/HappyNewYear_2018/HappyNewYear_2018.png) (https://twitter.com/hashtag/HappyNewYear2019?src=hash) #orexnav (https://twitter.com/hashtag/orexnav?src=hash)
Название: OSIRIS-REx
Отправлено: tnt22 от 31.12.2018 20:29:09
Цитата(https://pbs.twimg.com/profile_images/771767002461376512/IQbLX3za_bigger.jpg)KinetX SNAFD‏ @KinetXSNAFD (https://twitter.com/KinetXSNAFD) 9:11 (https://twitter.com/KinetXSNAFD/status/1079787073765167105) - 31 дек. 2018 г.

Interesting contrasts between @NASA (https://twitter.com/NASA)'s two New Year's space encounters: Relative velocity of @OSIRISREx (https://twitter.com/OSIRISREx) to Bennu: 0.13 mph (6 cm/s) Closet approach distance (during first orbit): 0.9 miles (1.4 km) at 2300 UTC (2 pm ET) on Jan 1.
Название: OSIRIS-REx
Отправлено: tnt22 от 31.12.2018 22:40:02
Цитата(https://pbs.twimg.com/profile_images/271119562/jcmy2_bigger.jpg)Jonathan McDowell‏Подлинная учетная запись @planet4589 (https://twitter.com/planet4589) 26 мин. назад (https://twitter.com/planet4589/status/1079817709553180680)

Here is the distance of OSIRIS-REX from Bennu during Nov and Dec (and forward to first few days of Jan) based on JPL Horizons data

(https://pbs.twimg.com/media/DvxIdj_XcAAOnDJ.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 31.12.2018 23:10:47
Цитата(https://pbs.twimg.com/profile_images/271119562/jcmy2_bigger.jpg)Jonathan McDowell‏Подлинная учетная запись @planet4589 (https://twitter.com/planet4589) 4 мин. назад (https://twitter.com/planet4589/status/1079831150644944896)

The @OSIRISREx (https://twitter.com/OSIRISREx) probe should now be in a 1.5 x 2.0 km orbit around Bennu.
Название: OSIRIS-REx
Отправлено: tnt22 от 01.01.2019 01:39:13
ЦитатаOSIRIS-REx Orbital Insertion

OSIRIS-REx Mission (https://www.youtube.com/channel/UCgesBEUkT8iyGssfuJm-Gnw)

Опубликовано: 31 дек. 2018 г.

On Dec. 31, 2018, NASA's OSIRIS-REx spacecraft will enter orbit around asteroid Bennu -- setting new records for the smallest body ever orbited by a spacecraft and the closest orbit of a planetary body by any spacecraft. OSIRIS-REx will remain in orbit until mid-February 2019 when the spacecraft will begin a series of flybys that allow it to conduct a more detailed survey of the asteroid's surface. It will enter orbit a second time in mid-2019.
https://www.youtube.com/watch?v=CZtD-FRKSjghttps://www.youtube.com/watch?v=CZtD-FRKSjg (https://www.youtube.com/watch?v=CZtD-FRKSjg) (1:23)
Название: OSIRIS-REx
Отправлено: tnt22 от 01.01.2019 01:41:04
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 43 мин. назад (https://twitter.com/OSIRISREx/status/1079858534278344704)

It's official! I'm in orbit around #asteroid (https://twitter.com/hashtag/asteroid?src=hash) Bennu -- now the smallest body ever orbited by a spacecraft. My snug path around the asteroid also sets a new record for the closest orbit of a planetary body by any spacecraft.

#HappyNewYear (https://twitter.com/hashtag/HappyNewYear?src=hash)(https://abs.twimg.com/hashflags/HappyNewYear_2018/HappyNewYear_2018.png) (https://twitter.com/hashtag/HappyNewYear?src=hash), indeed! More (https://abs.twimg.com/emoji/v2/72x72/27a1.png) http://bit.ly/BennuOrbit  (https://t.co/fwL3FEVU9m)

(https://pbs.twimg.com/media/Dvxgv_SVsAAa4sr.jpg)


(https://pbs.twimg.com/profile_images/771767002461376512/IQbLX3za_bigger.jpg)KinetX SNAFD‏ @KinetXSNAFD (https://twitter.com/KinetXSNAFD) 35 мин. назад (https://twitter.com/KinetXSNAFD/status/1079860755049066496)

Successful orbit insertion!!! What a truly amazing milestone. We've been analyzing and tweaking the design of this challenging orbit insertion for over 10 years! #orexnav (https://twitter.com/hashtag/orexnav?src=hash)
Название: OSIRIS-REx
Отправлено: tnt22 от 01.01.2019 01:48:10
https://www.asteroidmission.org/?latest-news=nasas-osiris-rex-spacecraft-enters-close-orbit-around-bennu-breaking-record
Цитата
NASA's OSIRIS-REx Spacecraft Enters Close Orbit Around Bennu, Breaking Record

December 31, 2018 - At 2:43 p.m. EST on December 31, while many on Earth prepared to welcome the New Year, NASA's OSIRIS-REx spacecraft, 70 million miles (110 million kilometers) away, carried out a single, eight-second burn of its thrusters - and broke a space exploration record. The spacecraft entered into orbit around the asteroid Bennu, and made Bennu the smallest object ever to be orbited by a spacecraft.

(https://www.asteroidmission.org/wp-content/uploads/2018/12/Orbital-A-Beauty-Shot-1024x576.png) (https://www.asteroidmission.org/orbital-a-beauty-shot/)
On Dec. 31, 2018, NASA's OSIRIS-REx spacecraft went into orbit around asteroid Bennu for the first time.

"The team continued our long string of successes by executing the orbit-insertion maneuver perfectly," said Dante Lauretta, OSIRIS-REx principal investigator at the University of Arizona, Tucson. "With the navigation campaign coming to an end, we are looking forward to the scientific mapping and sample site selection phase of the mission."

Lauretta, along with his team, spent the last day of 2018 with his feet planted on Earth, but his mind focused on space. "Entering orbit around Bennu is an amazing accomplishment that our team has been planning for years," Lauretta said.

Inching around the asteroid at a snail's pace, OSIRIS-REx's first orbit marks a leap for humankind. Never before has a spacecraft fr om Earth circled so close to such a small space object - one with barely enough gravity to keep a vehicle in a stable orbit.

Now, the spacecraft will circle Bennu about a mile (1.75 kilometers) from its center, closer than any other spacecraft has come to its celestial object of study. (Previously the closest orbit of a planetary body was in May 2016, when the Rosetta spacecraft orbited about four miles (seven kilometers) from the center of the comet 67P/Churyumov-Gerasimenko.) The comfortable distance is necessary to keep the spacecraft locked to Bennu, which has a gravity force only 5-millionths as strong as Earth's. The spacecraft is scheduled to orbit Bennu through mid-February at a leisurely 62 hours per orbit.

Now that the OSIRIS-REx spacecraft is closer to Bennu, physical details about the asteroid will leap into sharper focus, and the spacecraft's tour of this rubble pile of primordial debris will become increasingly detailed and focused.
"Our orbit design is highly dependent on Bennu's physical properties, such as its mass and gravity field, which we didn't know before we arrived," said OSIRIS-REx's flight dynamics system manager Mike Moreau (https://solarsystem.nasa.gov/people/295/mike-moreau/), who is based at NASA's Goddard Space Flight Center in Greenbelt, Maryland.

"Up until now, we had to account for a wide variety of possible scenarios in our computer simulations to make sure we could safely navigate the spacecraft so close to Bennu. As the team learned more about the asteroid, we incorporated new information to hone in on the final orbit design," he said.

The simulations have played a critical role. The OSIRIS-REx mission, after all, was designed based on complex computer programs that predicted -- quite accurately, as it turns out -- the properties of Bennu and how the spacecraft's trajectory would behave. This diligent preparation allowed the team to navigate the vehicle safely to Bennu in December and put some questions to rest (there are, indeed, signs of ancient water (https://www.asteroidmission.org/?latest-news=nasas-newly-arrived-osiris-rex-spacecraft-already-discovers-water-asteroid) preserved in Bennu's rocks) and to fly over its poles and equator in a preliminary survey that led to some surprises (Bennu has many large boulders).

Having completed the preliminary survey of Bennu with a flyby of its south pole on December 16, the spacecraft moved to a safe 31 miles (50 kilometers) away from the asteroid to give the navigation team a chance to regroup and prepare for orbit insertion. Next, Lockheed Martin engineers programmed the spacecraft to begin moving back to a position about nine miles (15 kilometers) over Bennu's north pole to prepare for three burns of its thrusters over the course of 10 days that would place the spacecraft into orbit.

https://www.youtube.com/watch?v=CZtD-FRKSjg (https://www.youtube.com/watch?v=CZtD-FRKSjg)
Even though OSIRIS-REx is in the most stable orbit possible, Bennu's gravitational pull is so tenuous that keeping the spacecraft safe will require occasional adjustments, said Dan Wibben, OSIRIS-REx maneuver and trajectory design lead at KinetX Aerospace in Simi Valley, California.

"The gravity of Bennu is so small, forces like solar radiation and thermal pressure from Bennu's surface become much more relevant and can push the spacecraft around in its orbit much more than if it were orbiting around Earth or Mars, wh ere gravity is by far the most dominant force," he said.

The OSIRIS-REx navigation team will use "trim" maneuvers to slightly thrust the spacecraft in one direction or another to correct its orbit and counter these small forces. If the spacecraft drifts away from Bennu, or some other problem forces it into safe mode, it has been programmed to fly away from the asteroid to stay safe from impact.

"It's simple logic: always burn toward the Sun if something goes wrong," said Coralie Adam, OSIRIS-REx lead optical navigation engineer at KinetX. Engineers can navigate the spacecraft back into orbit if it drifts away, Adam said, though that's unlikely to happen.

The navigation and spacecraft operations teams are focused on the first orbital phase. Their primary goal is to transition away from star-based navigation, which allowed the team to locate the spacecraft based on pictures of the star formations around it taken by the cameras onboard (https://www.asteroidmission.org/objectives/instruments/). Navigators use methods like this since there is no GPS in deep space and we can't see the spacecraft from Earth-based telescopes. From this point forward, though, the OSIRIS-REx team will rely on landmarks on Bennu's surface to track OSIRIS-REx, a more precise technique that will ultimately guide them to a sample-collection site clear of boulders and large rocks, said Adam.

"After conducting a global imaging and mapping campaign during our recent preliminary survey phase, the science team has created 3-D models of Bennu's terrain that we're going to begin using for navigation around the asteroid," she said.

Another critical objective of this orbital phase, Adam said, is to get a better handle on Bennu's mass and gravity, features that will influence the planning of the rest of the mission, notably the short touchdown on the surface for sample collection in 2020. In the case of Bennu, scientists can only measure these features by getting OSIRIS-REx very close to the surface to see how its trajectory bends from Bennu's gravitational pull.

"The Orbital A phase will help improve our detailed models for Bennu's gravity field, thermal properties, orientation, and spin rate," said Wibben. "This, in turn, will allow us to refine our trajectory designs for the even more challenging flight activities we will perform in 2019."

The December 31 maneuver to place the spacecraft into orbit about Bennu is the first of many exciting navigation activities planned for the mission. The OSIRIS-REx team will resume science operations in late February. At that point, the spacecraft will perform a series of close flybys of Bennu for several months to take high-resolution images of every square inch of the asteroid to help select a sampling site. During the summer of 2020, the spacecraft will briefly touch the surface of Bennu to retrieve a sample. The OSIRIS-REx mission is scheduled to deliver the sample to Earth in September 2023.

Goddard provides overall mission management, systems engineering and the safety and mission assurance for OSIRIS-REx. Dante Lauretta of the University of Arizona, Tucson, is the principal investigator, and the University of Arizona also leads the science team and the mission's science observation planning and data processing. Lockheed Martin Space in Denver built the spacecraft and is providing flight operations. Goddard and KinetX Aerospace are responsible for navigating the OSIRIS-REx spacecraft. OSIRIS-REx is the third mission in NASA's New Frontiers Program, which is managed by NASA's Marshall Space Flight Center in Huntsville, Alabama for the agency's Science Mission Directorate in Washington.
Название: OSIRIS-REx
Отправлено: tnt22 от 01.01.2019 02:07:35
https://tass.ru/kosmos/5969206
Цитата31 ДЕК 2018, 19:55
Аппарат OSIRIS-REx выходит на орбиту вокруг астероида Бенну

Он станет самым мелким небесным телом, вокруг которого будет обращаться космический аппарат

НЬЮ-ЙОРК, 31 декабря. /ТАСС/. Американский космический аппарат OSIRIS-REx через четыре часа выйдет на орбиту вокруг астероида Бенну. Об этом сообщило в понедельник в Twitter Национальное управление по аэронавтике и исследованиям космического пространства (NASA).

"Этот день настал! - говорится в сообщении. - Через четыре часа аппарат впервые выходит на орбиту вокруг астероида. Бенну станет самым мелким небесным телом, вокруг которого будет обращаться космический аппарат, и орбита будет проходить ближе к поверхности, чем у любого другого космического аппарата, сближавшегося с небесным телом".

Согласно расчетам, для выхода на орбиту вокруг астероида маневровые двигатели аппарата будет включены на 8 секунд в 14:43 по времени восточного побережья США (22:43 мск).

Станция OSIRIS-REx, выведенная в космос в сентябре 2016 года, оснащена несколькими приборами, в том числе фотокамерами, спектрометрами и лазерным высотомером. В августе нынешнего года она начала сложный маневр сближения с астероидом, который движется по орбите со скоростью 63 тыс. миль в час (101388 км/ч): после нескольких включений бортовых двигателей аппарат приблизился к астероиду в начале декабря и произвел картографирование его поверхности. Теперь аппарат будет совершать обороты вокруг Бенну на высоте от 1,4 до 2 км от поверхности. Согласно программе полета, он будет находиться на орбите вокруг астероида для выбора подходящей точки для забора образца грунта.

Сама операция по забору грунта запланирована на середину 2020 года: манипулятор, снабженный специальным пневматическим устройством, коснется поверхности астероида. В общей сложности сотрудники NASA рассчитывают собрать от 60 г до 2 кг астероидного грунта. Возвращение на Землю спускаемой капсулы с собранным грунтом намечено на сентябрь 2023 года.

Бенну имеет диаметр около 550 м и вращается по эллиптической орбите вокруг Солнца. Астрономы относят его к Аполлонам - астероидам, орбиты которых пересекают орбиту Земли. Вероятность столкновения с ним составляет 1 к 4000. Его падение на Землю было бы эквивалентно взрыву мощностью 2700 мегатонн.

OSIRIS-REx является одним из трех аппаратов, созданных экспертами NASA для запуска в дальний космос по программе New Frontiers. Два других - это межпланетная станция New Horizons, которая через несколько часов должна сблизиться с астероидом Ultima Thule и автоматическая межпланетная станция Juno, при помощи которой ведутся исследования Юпитера.
Название: OSIRIS-REx
Отправлено: tnt22 от 01.01.2019 02:40:05
https://spaceflightnow.com/2018/12/31/osiris-rex-bennu-orbit-insertion/
ЦитатаOSIRIS-REx completes New Year's Eve orbit insertion burn at asteroid
December 31, 2018 (https://spaceflightnow.com/2018/12/) | Stephen Clark (https://spaceflightnow.com/author/stephen-clark/)

(https://mk0spaceflightnoa02a.kinstacdn.com/wp-content/uploads/2018/12/bennuasteroid.jpg)
This mosaic image of asteroid Bennu is composed of 12 PolyCam images collected on Dec. 2 by the OSIRIS-REx spacecraft fr om a range of 15 miles (24 kilometers). Credits: NASA/Goddard/University of Arizona

After four weeks of navigating in the vicinity of asteroid Bennu, NASA's OSIRIS-REx spacecraft fired its thrusters for eight seconds Monday to slip into orbit around the carbon-rich object, making Bennu the smallest planetary body ever orbited by a spacecraft.

OSIRIS-REx arrived at Bennu on Dec. 3, ending a journey fr om Earth that lasted more than two years and spanned 1.2 billion miles (2 billion kilometers). Since then, the robotic spacecraft has surveyed the 1,600-foot-wide (492-meter) asteroid through a series of flybys as close as 4.4 miles (7 kilometers) over Bennu's north pole, south pole and equator to measure the asteroid's gravitational tug on OSIRIS-REx, which helped scientists determine the object's mass.

The mass estimate helped navigators refine the parameters of OSIRIS-REx's maneuver to enter orbit around Bennu. The craft's thrusters ignited for 8 seconds at 2:43:55 p.m. EST (1943:55 GMT) Monday to slightly adjust OSIRIS-REx's velocity, nudging it just enough for Bennu's tenuous gravity to capture the probe into orbit.

"The team continued our long string of successes by executing the orbit-insertion maneuver perfectly," said Dante Lauretta, OSIRIS-REx principal investigator at the University of Arizona, Tucson. "With the navigation campaign coming to an end, we are looking forward to the scientific mapping and sample site selection phase of the mission."
Launched in September 2016, NASA's $1 billion Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer was built to travel to Bennu and collect samples for return to Earth.

When the solar system formed more than 4.5 billion years ago, chunks of rock and ice collided as they circled the sun like the balls on a billiard table, eventually building up planets. The leftovers became asteroids and comets, and scientists believe Bennu still harbors the basic carbon-bearing organic molecules that were present in the early solar solar system, the stuff that may have helped seed life.

Bennu is in an orbit around the sun that crosses Earth's orbit, making it a potentially hazardous asteroid that could eventually pose an impact threat with our planet.

The spacecraft carries three cameras -- one for long-range viewing, a color camera for mapping, and another imager to take pictures as OSIRIS-REx collects samples from the asteroid's surface. The rest of OSIRIS-REx's suite of science instruments includes a thermal emission spectrometer to detect heat coming from the asteroid, a visible infrared spectrometer to locate minerals and organic materials, a laser altimeter provided by the Canadian Space Agency to create topographic maps, and a student-built X-ray spectrometer to identify individual chemical elements present on the asteroid.

Besides revealing Bennu with high-resolution images, OSIRIS-REx has already made discoveries at the asteroid.

Data gathered by thermal emission and visible infrared spectrometer instruments -- OTES and OVIRS -- indicates clay minerals on the asteroid's surface contain hydroxyl molecules with oxygen and hydrogen molecules bonded together. This finding suggests Bennu's surface was once in contact with water, likely when the asteroid was part of a much larger parent body that was smashed to bits in a collision in the chaotic early solar system.

(https://mk0spaceflightnoa02a.kinstacdn.com/wp-content/uploads/2016/09/1472585684039.jpg)
An artist's concept of OSIRIS-REx at Bennu. Credit: Lockheed Martin

"The presence of hydrated minerals across the asteroid confirms that Bennu, a remnant from early in the formation of the solar system, is an excellent specimen for the OSIRIS-REx mission to study the composition of primitive volatiles and organics," said Amy Simon, OVIRS deputy instrument scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "When samples of this material are returned by the mission to Earth in 2023, scientists will receive a treasure trove of new information about the history and evolution of our solar system."

"Our initial data show that the team picked the right asteroid as the target of the OSIRIS-REx mission. We have not discovered any insurmountable issues at Bennu so far," said Lauretta said. "The spacecraft is healthy and the science instruments are working better than required. It is time now for our adventure to begin."

The first high-resolution images of Bennu taken by OSIRIS-REx revealed a miniature world containing a few relatively smooth regions without many large rocks, interspersed with boulder-filled regions that might be treacherous for the spacecraft's sample collection touch-and-go maneuver.

One prominent feature of Bennu's landscape is a large boulder protruding from the surface near the south pole. While ground-based radar images suggested the boulder to be at least 33 feet, or 10 meters, in height, OSIRIS-REx imagery indicates is closer to 164 feet, or 50 meters, tall with a width of approximately 180 feet, or 55 meters, according to NASA.

On approach to Bennu, ground controllers at Lockheed Martin in Denver -- wh ere OSIRIS-REx was built -- unlatched the probe's robotic arm from its launch restraint for the first time. Over several days, the ground team commanded the arm to bend its joints and jettison a launch cover over the sample collection mechanism, which will release compressed air during a touch-and-go maneuver to force gravel and surface material into an on-board chamber for the journey back to Earth.

(https://mk0spaceflightnoa02a.kinstacdn.com/wp-content/uploads/2018/08/Small_Bodies_Relative_Sizes_print.jpg)
This mosaic compares the size of asteroid Bennu, to scale, with other asteroids and comets visited by spacecraft. Credit: NASA/University of Arizona/ESA/JAXA

Due to the asteroid's weak gravity, OSIRIS-REx was predicted to move around Bennu at a speed of just one-tenth of a mile per hour, or about 5 centimeters per second, once in orbit. The spacecraft's first orbital phase will last until mid-February, when OSIRIS-REx will again make a series of flybys of Bennu.

During the mission's first orbital phase, OSIRIS-REx is orbiting the asteroid at a range of 0.9 miles (1.4 km) to 1.24 miles (2.0 km) from the center of Bennu, setting another record for the closest distance any spacecraft has orbited to a planetary body.

Orbital speeds are determined by the gravitational pull of the parent planet or star. For comparison, objects in low Earth orbit have to travel at around 17,500 mph (7.8 kilometers per second) to avoid falling back into the atmosphere.

"It's Bennu's size and small mass that make the navigation challenges on this mission unprecedented, really," said Michael Moreau, OSIRIS-REx flight dynamics system manager at NASA's Goddard Space Flight Center, in a conference call with reporters in August.

Comet 67P/Churyumov-Gerasimenko, which was orbited by the European Space Agency's Rosetta spacecraft from 2014 through 2016, is between five and 10 times larger than Bennu, depending on how you measure. Asteroid Ryugu, wh ere Japan's Hayabusa 2 spacecraft is currently exploring, is nearly twice the size of Bennu, and Hayabusa 2 will not enter orbit around it.

"Entering orbit around Bennu is an amazing accomplishment that our team has been planning for years," Lauretta said.

OSIRIS-REx will orbit and explore Bennu for more than a year, allowing scientists and mission planners to examine the asteroid and determine a safe location for the craft's touch-and-go descent in July 2020 to snag samples from the asteroid. The spacecraft will depart Bennu and head back to Earth, releasing its sample carrier for re-entry and landing in Utah in September 2023.

Scientists will take the samples to an ultra-clean facility at NASA's Johnson Space Center in Houston for detailed analysis.
Название: OSIRIS-REx
Отправлено: tnt22 от 01.01.2019 04:02:29
https://ria.ru/20190101/1548963642.html
ЦитатаНа орбиту астероида Бенну вышел спутник
03:06

МОСКВА, 1 янв - РИА Новости. Космический зонд НАСА OSIRIS-REx (Origins Spectral Interpretation Resource Identification Security -- Regolith Explorer) вышел на орбиту вокруг астероида Бенну, образцы породы которого ему предстоит собрать.

Зонд OSIRIS-REx был запущен в сентябре 2016 года. Его целью исследователи выбрали астероид Бенну, ранее известный под номером 1999 RQ36. Аппарат достиг своей рабочей позиции на расстоянии 20 километров от 500-метрового астероида 3 декабря.
Цитата"Это официально! Я на орбите астероида Бенну - самого маленького небесного тела, вокруг которого когда-либо вращался космический аппарат", - говорится в аккаунте миссии в Twitter.
В рамках первичного исследования астероида аппарат совершил несколько пролетов на расстоянии семи километров от Бенну. Зонд собирал информацию о массе и движении астероида. В рамках орбитального этапа изучения Бенну, он будет совершать виток вокруг астероида за 50 часов и приближаться к космическому телу на расстояние до 1,4 километра. На последующих этапах изучения аппарат будет собирать информацию для определения места забора грунта астероида.

Операция по забору частиц грунта с астероида намечена на середину 2020 года. По замыслу разработчиков, зонд на пять секунд опустит на поверхность Бенну трехметровую выдвижную "руку" TAGSAM (Touch-and-Go Sample Acquisition Mechanism), которая втянет в специальную капсулу частицы материала с поверхности космического тела. Создатели рассчитывают, что с поверхности с помощью сжатого газа удастся добыть по крайней мере около 60 граммов пород, которые будут доставлены на Землю в 2023 году.

Выбранный в качестве объекта изучения для OSIRIS-REx астероид был назван в честь птицы Бенну - символа воскресения древнеегипетского божества Осириса. Космическое тело размером 500 метров было открыто учеными из проекта LINEAR Массачусетского технологического института, и, по расчетам специалистов, сблизится с Землей в 2182 году. В 2013 году сообщалось, что Бенну стал главным потенциально опасным объектом для нашей планеты после "отмены" угрозы астероид Апофис и ряда других астероидов.
Название: OSIRIS-REx
Отправлено: tnt22 от 01.01.2019 19:46:35
Цитата(https://pbs.twimg.com/profile_images/887722406483181568/oW78EKXI_bigger.jpg)Emily Lakdawalla‏ @elakdawalla (https://twitter.com/elakdawalla) 1 ч. назад (https://twitter.com/elakdawalla/status/1080120646447783936)

ICYMI yesterday, OSIRIS-REx has arrived in orbit at Bennu, and team member Olivier Barnouin shared a wealth of early science results during a panel discussion yesterday. http://www.planetary.org/blogs/emily-lakdawalla/2018/news-brief-osiris-rex-orbit.html ... (https://t.co/yTSzeQSixC)

(https://pbs.twimg.com/media/Dv1b_yjUcAAkJqx.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 03.01.2019 02:37:49
https://www.asteroidmission.org/galleries/spacecraft-imagery/preliminarysurveynavcam-2/#main
Цитата(https://www.asteroidmission.org/wp-content/uploads/2018/01/PreliminarySurveyNavCam.gif)

Preliminary Survey of Bennu

NASA's OSIRIS-REx spacecraft arrived at asteroid Bennu on Dec. 3, 2018. During the month of December, the spacecraft preformed a preliminary survey (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Preliminary-Survey-Poster-12-19-17.pdf) of Bennu, conducting three flyovers of the asteroid's north pole and one each of its equator and south pole. The data gathered during these flybys allowed the mission team to more precisely estimate Bennu's mass so that the spacecraft could go into go into orbit around the asteroid (https://www.asteroidmission.org/?latest-news=nasas-osiris-rex-spacecraft-enters-close-orbit-around-bennu-breaking-record) on Dec. 31.

This series of images was captured by NavCam 1, a black-and-white imager that is one of three cameras comprising TAGCAMS (the Touch-and-Go Camera System), which is part of OSIRIS-REx's guidance, navigation, and control system. TAGCAMS was designed, built and tested by Malin Space Science Systems; Lockheed Martin Space integrated TAGCAMS to the OSIRIS-REx spacecraft and operates TAGCAMS.

Date Taken: Nov. 30 - Dec. 31, 2018

Instrument Used: TAGCAMS (NavCam 1)

Credit: NASA/Goddard/University of Arizona/Lockheed Martin Space
Название: OSIRIS-REx
Отправлено: tnt22 от 03.01.2019 02:40:19
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 1 ч. назад (https://twitter.com/OSIRISREx/status/1080588026537959424)

Here's the path I flew during Preliminary Survey: three passes over Bennu's north pole, one flyby of the equator, and one pass under the asteroid's south pole. Then, I drifted away from Bennu as planned before coming back in for orbital insertion: http://bit.ly/BennuOrbit  (https://t.co/fwL3FEVU9m)

(https://pbs.twimg.com/media/Dv8E5eeUYAEZI3Z.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 04.01.2019 22:18:59
https://www.asteroidmission.org/navcam-earth-moon-bennu-dec19/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/01/NavCam-Earth-Moon-Bennu-Dec19.jpg)

NavCam Image of Earth, the Moon, and Bennu

On Dec. 19, OSIRIS-REx used its NavCam 1 camera to capture this image of three familiar planetary bodies: asteroid Bennu, Earth, and the moon. Despite the spacecraft's distance from home - about 71 million miles (114 million kilometers) - Earth and the Moon are visible in the lower left due to the long exposure time used for this image (five seconds). The spacecraft's range to Bennu is only about 27 miles (43 kilometers), so the asteroid appears highly overexposed in the upper right. The head of the constellation Hydra is also visible in the lower right portion of the image.

NavCam 1 is a black-and-white imager that is one of three cameras comprising TAGCAMS (the Touch-and-Go Camera System), which is part of OSIRIS-REx's guidance, navigation, and control system. TAGCAMS was designed, built and tested by Malin Space Science Systems; Lockheed Martin Space integrated TAGCAMS to the OSIRIS-REx spacecraft and operates TAGCAMS.

Date Taken: Dec. 19, 2018

Instrument Used: TAGCAMS (NavCam 1)

Credit: NASA/Goddard/University of Arizona/Lockheed Martin Space
Название: OSIRIS-REx
Отправлено: tnt22 от 08.01.2019 00:35:15
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 47 мин. назад (https://twitter.com/OSIRISREx/status/1082378522918760449)

I've been in orbit around Bennu for about seven days now. As I orbit the asteroid, Bennu also continues its orbit around the Sun. We -- Bennu and I -- are currently about 103 million kilometers (64 million miles) from Earth.

(https://pbs.twimg.com/media/DwVZdVwVsAEZm2E.jpg)
(https://pbs.twimg.com/media/DwVcFKWVsAE2Grp.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 14.01.2019 22:58:34
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 1 ч. назад (https://twitter.com/OSIRISREx/status/1084881399889289216)

Since launching in 2016, I have traveled nearly 2.2 billion kilometers (1.3 billion miles) around the Solar System and am now in orbit around #asteroid (https://twitter.com/hashtag/asteroid?src=hash) Bennu.
Check out the Mission Status Update page to follow along on my journey: http://bit.ly/ORExMSU  (https://t.co/Y7zUNjXdkw)

(https://pbs.twimg.com/media/Dw5CMteUUAAKn6l.jpg)
https://www.asteroidmission.org/?mission_update=jan-14-2019
ЦитатаJan 14, 2019

The OSIRIS-REx spacecraft continues to orbit Bennu at an altitude ranging fr om 1.6 to 2.1 km, with an orbital period of 61 hours. The spacecraft has completed 5.5 orbits of Bennu to date. The one-way communication time from the spacecraft back to Earth is around 5.5 minutes.

On the ground, the mission held its 14th Science Team Meeting at the University of Arizona last week. This was the first science team meeting since the spacecraft's arrival at the asteroid, which means it was also the first gathering wh ere the entire science team was able to work with detailed Bennu data from the spacecraft.
Название: OSIRIS-REx
Отправлено: tnt22 от 15.01.2019 01:22:33
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 57 мин. назад (https://twitter.com/OSIRISREx/status/1084924253084934146)

In my current orbit around Bennu, I pass as close as 1.6 km (just under one mile) from the asteroid's center. To maintain these close quarters, my navigation team is building on lessons learned from other small body missions - and taking them to the next level of precision.

(https://pbs.twimg.com/media/Dw5f_hfVsAMLlKu.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 15.01.2019 21:17:46
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 8:54 (https://twitter.com/OSIRISREx/status/1085218734984196101) - 15 янв. 2019 г.

How close am I to Bennu? During Orbital A, I'm flying much closer to the asteroid's surface than the altitude of a typical commercial airliner flying over Earth's surface. During Orbital B, which begins this summer, I'll get even closer to the asteroid: http://bit.ly/AsteroidOps  (https://t.co/2Piswc7J1v)

(https://pbs.twimg.com/media/Dw9x7lFVsAAHuub.jpg)


10:04 (https://twitter.com/OSIRISREx/status/1085236221842837504) - 15 янв. 2019 г.

Zooming in further... I'm flying closer to Bennu's surface than many small aircraft, helicopters, and even some birds fly over Earth's surface. My altitude is also lower than the highest point of Mount Kilimanjaro. (https://abs.twimg.com/emoji/v2/72x72/1f6e9.png) (https://abs.twimg.com/emoji/v2/72x72/1f681.png) (https://abs.twimg.com/emoji/v2/72x72/1f986.png) (https://abs.twimg.com/emoji/v2/72x72/1f5fb.png)

(https://pbs.twimg.com/media/Dw-FTVtUwAAejx_.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 16.01.2019 23:22:54
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 46 мин. назад (https://twitter.com/OSIRISREx/status/1085620739611348992)

Mapping an asteroid requires views from all directions. During Preliminary Survey, I used MapCam to snap this image of Bennu from a distance of about 8 miles (13 km) as I flew toward the asteroid during a pass over its equator. http://bit.ly/2QT8Rlp  (https://t.co/Hw1Qmc4UyP)

(https://pbs.twimg.com/media/DxDi_AhVYAEwVS9.jpg)
https://www.asteroidmission.org/mapcam-ps-equator-flyby/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/01/MapCam-PS-Equator-Flyby.jpg)

Bennu Equatorial Flyby

This image was captured by OSIRIS-REx's MapCam imager on December 12, 2018 as the spacecraft flew over Bennu's equatorial region during the mission's Preliminary Survey (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Preliminary-Survey-Poster-12-19-17.pdf) of the asteroid. The image was taken from a distance of about 8 miles (13 km) while the spacecraft was traveling toward the asteroid.

Date Taken: Dec. 12, 2018

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 23.01.2019 00:01:59
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 4 ч. назад (https://twitter.com/OSIRISREx/status/1087756391278755840)

A view from the southern hemisphere... I captured this shot of Bennu with my MapCam imager as I flew past the asteroid's south pole during Preliminary Survey. (https://abs.twimg.com/emoji/v2/72x72/1f4f8.png) More image details: http://bit.ly/BennuSPole  (https://t.co/bap4f8o8tF)

(https://pbs.twimg.com/media/Dxh5LWcU0AAvJ7T.jpg)
https://www.asteroidmission.org/mapcam-south-pole-flyby-20181217t061345/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/01/MapCam-South-Pole-FlyBy-20181217T061345.jpeg)

MapCam South Pole Flyby

This image was captured by OSIRIS-REx's MapCam imager on Dec. 17, 2018 as the spacecraft flew under Bennu's south pole during the mission's Preliminary Survey of the asteroid. The image has an exposure time of 9.3 milliseconds and was taken from a distance of about 10 miles (16 km) while the spacecraft was traveling away from the asteroid.

Date Taken: Dec. 17, 2018

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 25.01.2019 01:32:11
https://www.asteroidmission.org/navcamjan17images/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/01/NavCamJan17Images.png)

NavCam Images from Orbit

During Orbital A phase, the OSIRIS-REx spacecraft's NavCam 1 navigation camera is regularly imaging Bennu's surface, even though its scientific camera suite (OCAMS) is not collecting data. The navigation team uses these "OpNav" (short for optical navigation) images to monitor the spacecraft's close orbit around the asteroid.

These two OpNav images of Bennu's southern hemisphere, which each have an exposure time of about 1.4 milliseconds, were captured Jan. 17 from a distance of about one mile (1.6 km). They have been cropped and the contrast has been adjusted to better reveal surface features. The large boulder - fully visible in the middle of the left frame and in partial shadow in lower portion of right frame - is about 165 feet (50 meters) across.

Date Taken: Jan. 17, 2019

Instrument Used: TAGCAMS (NavCam 1)

Credit: NASA/Goddard/University of Arizona/Lockheed Martin
Название: OSIRIS-REx
Отправлено: tnt22 от 27.01.2019 23:50:57
ЦитатаLIVE - Panel discussion about the OSIRIS-REx mission, hosted by Dan Riskin

Canadian Space Agency (https://www.youtube.com/channel/UCdNtqpHlU1pCaVy2wlzxHKQ)

Прямой эфир: 25 янв. 2019 г.

2019-01-25 - Panel discussion at the Royal Ontario Museum hosted by Dan Riskin between Tim Haltigin of the Canadian Space Agency, Kate Howells of the Planetary Society and the Government of Canada's Space Advisory Board, Mike Daly of York University, and Kim Tait of the Royal Ontario Museum, about OSIRIS-REx, the mission to return a sample from the surface of asteroid Bennu.

Credit: Canadian Space Agency
https://www.youtube.com/watch?v=9Gro715ZVJ8https://www.youtube.com/watch?v=9Gro715ZVJ8 (https://www.youtube.com/watch?v=9Gro715ZVJ8) (1:09:00)
Название: OSIRIS-REx
Отправлено: tnt22 от 04.02.2019 12:07:46
https://www.asteroidmission.org/updated-bennu-shape-model-3d-files/
Цитата
BENNU SHAPE MODEL 3D FILES
Have access to a 3D printer? Download STL or OBJ files and print your own 3D model of asteroid Bennu. Two versions are available.

(https://www.asteroidmission.org/wp-content/uploads/2019/01/Shape-Model-Only-corrected-rotation-reduced-frames.gif) (https://www.asteroidmission.org/shape-model-only-corrected-rotation-reduced-frames/)

RADAR-BASED SHAPE MODEL (2013)

The OSIRIS-REx  team planned the spacecraft's mission using a shape model (https://www.asteroidmission.org/galleries/word-of-the-week/shape-model/#main) of asteroid Bennu that was developed in 2013 and based on radar observations from Arecibo Observatory (http://www.naic.edu/ao/landing) and Goldstone tracking station (https://gssr.jpl.nasa.gov/). Although the original model did not predict the surface topography of Bennu in detail, at least one large rock formation was predicted in the southern hemisphere.
 
OBJ FILE (https://www.asteroidmission.org/wp-content/uploads/2019/01/Bennu-Radar.obj)
 
STL FILE (https://www.asteroidmission.org/wp-content/uploads/2019/01/Radar-Bennu-Model.stl)
 
NEW PRELIMINARY SHAPE MODEL (NOV. 2018 )

As the spacecraft approached and began surveying Bennu, data from the OSIRIS-REx Camera Suite (OCAMS) was used to create a new preliminary shape model. As it turns out, the original 2013 model closely predicted the asteroid's actual shape, with Bennu's diameter, rotation rate, inclination, and overall shape presented almost exactly as projected. This new model, which was created using a compilation of images taken by OSIRIS-REx's PolyCam camera during the spacecraft's approach in November 2018, shows features on Bennu as small as six meters.

Credit: NASA/Goddard/University of Arizona

(https://www.asteroidmission.org/wp-content/uploads/2018/12/Bennu-Rotation-3-single.gif)
 
OBJ FILE (https://www.asteroidmission.org/wp-content/uploads/2018/12/g_06290mm_spc_obj_0000n00000_v008.obj)
 
STL FILE (https://www.asteroidmission.org/wp-content/uploads/2018/12/g_06290mm_spc_obj_0000n00000_v008.stl)
Название: OSIRIS-REx
Отправлено: tnt22 от 12.02.2019 08:45:55
https://www.nasa.gov/feature/goddard/2019/osiris-rex-mission-status-update
ЦитатаFeb. 11, 2019

OSIRIS-REx: Mission Status Update

Several times since NASA's OSIRIS-REx spacecraft entered orbit around its target asteroid Bennu on Dec. 31, 2018, the OSIRIS-REx team detected multiple, bright, point sources near Bennu in the optical navigation (OpNav) images obtained by the spacecraft's NavCam 1 imager. The science team is currently investigating the exact cause of this phenomenon, but it is probable that these images record a number of small particles near the asteroid.

The mission team's initial analysis determined that the particles do not pose a significant risk to the spacecraft in its current orbit, which is between 1 and 1.3 miles (1.6 and 2.1 km) from Bennu. The team will continue to study the particles and their sources. After the initial detection, the team increased the cadence of OpNav observations to better study the environment around Bennu and monitor for additional occurrences.

OSIRIS-REx is scheduled to leave its current orbit on Feb. 28, when it will begin the mission's Sample Site Selection campaign. During this next mission phase, the OSIRIS-REx spacecraft will make a series of flybys of Bennu at a distance of around 2 miles (3 km) to start mapping the asteroid in detail.

Erin Morton
University of Arizona


Nancy Neal Jones
NASA's Goddard Space Flight Center (http://www.nasa.gov/goddard)


Last Updated: Feb. 11, 2019
Editor: Karl Hille
Название: OSIRIS-REx
Отправлено: tnt22 от 14.02.2019 10:25:29
Цитата(https://pbs.twimg.com/profile_images/271119562/jcmy2_x96.jpg)
 (https://mobile.twitter.com/planet4589) Jonathan McDowell @planet4589 (https://mobile.twitter.com/planet4589) · 6 ч (https://mobile.twitter.com/planet4589/status/1095840792655159296)

The X-ray instrument on OSIRIS-REX, orbiting Bennu, has observed the Crab! REXIS's main goal is to measure X-rays from Bennu itself (caused by rocks flourescing when hit by solar X-rays) to determine the asteroid's composition.
Цитата(https://pbs.twimg.com/profile_images/424297760351739904/vqbuG07p_x96.png) (https://mobile.twitter.com/REXIS_MIT) REXIS @REXIS_MIT (https://mobile.twitter.com/REXIS_MIT) · 13 ч (https://mobile.twitter.com/REXIS_MIT/status/1095747603487248384)

We are pleased to release our first-light image from REXIS! The first source that we looked at after opening our cover was the Crab Nebula which we are using to calibrate our detectors. @OSIRISREx (https://mobile.twitter.com/OSIRISREx)

(https://pbs.twimg.com/media/DzTgoqdX0AAFJpQ.jpg) (https://mobile.twitter.com/REXIS_MIT/status/1095747603487248384/photo/1)
Название: OSIRIS-REx
Отправлено: tnt22 от 20.02.2019 17:26:50
http://www.asteroidmission.org/where-is-the-spacecraft/
ЦитатаUP NEXT:

Detailed Survey Phase begins on Feb. 28, 2019
Название: OSIRIS-REx
Отправлено: tnt22 от 20.02.2019 17:36:42
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) (https://mobile.twitter.com/OSIRISREx) NASA's OSIRIS-REx @OSIRISREx (https://mobile.twitter.com/OSIRISREx) · 19 февр. (https://mobile.twitter.com/OSIRISREx/status/1097621476637696004)

Hear ye, hear ye!
(https://abs-0.twimg.com/emoji/v2/svg/1f4e3.svg) The first bundle of mission data, collected using my OCAMS, OVIRS and TAGCAMS instruments during Cruise Phase and Earth Gravity Assist, is now available from the NASA Planetary Data System:

http://bit.ly/ORExPDS (https://t.co/Vuk1O2EcJY?amp=1)

#SeizeTheData (https://mobile.twitter.com/hashtag/SeizeTheData?src=hashtag_click)

(https://pbs.twimg.com/media/DzuGQtFVYAAo5mB.jpg) (https://mobile.twitter.com/OSIRISREx/status/1097621476637696004/photo/1)
Название: OSIRIS-REx
Отправлено: tnt22 от 23.02.2019 20:07:21
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 21 ч. назад (https://twitter.com/OSIRISREx/status/1099032394214952960)

REXIS, my student-built x-ray spectrometer, observed Bennu for the first time during Launch +30 months calibrations last weekend! With that milestone, all five of my scientific instruments have now observed the asteroid.
Название: OSIRIS-REx
Отправлено: tnt22 от 01.03.2019 13:28:19
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 27 февр. (https://twitter.com/OSIRISREx/status/1100827241070514177)

Last week, I used MapCam to snap this shot of Bennu's north pole along the terminator line between the asteroid's day and night sides. The largest boulder visible measures about 52 feet (16 meters) - or roughly the length of a semi-truck. (https://abs.twimg.com/emoji/v2/72x72/1f69b.png) (https://abs.twimg.com/emoji/v2/72x72/1f4cf.png) More: http://bit.ly/2IGrfPS  (https://t.co/IwO8NcfKR3)
https://www.asteroidmission.org/mapcam-north-pole-20190220/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/02/MapCam-North-Pole-20190220.png)

MapCam View of Bennu's North Pole from Orbit

This image shows a region near asteroid Bennu's north pole on the terminator line between the asteroid's day and night sides. The OSIRIS-REx spacecraft's MapCam camera obtained the image on Feb. 20 while in orbit around the asteroid from a distance of 1.1 miles (1.8 km). At this distance, each pixel covers approximately 4.5 inches (12 cm) of Bennu's surface. The largest boulder, located slightly left of the center, measures around 52 feet (16 meters) across, which, for scale, is the length of the trailer on a semi-truck.

During the mission's orbital phase, OSIRIS-REx circles the asteroid near Bennu's terminator line. While this positioning helps maintain the spacecraft in a stable orbit, the half-light/half-dark view of the asteroid creates challenging conditions for science imaging.

Date Taken: February 20, 2019

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 02.03.2019 12:15:12
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 13 ч. назад (https://twitter.com/OSIRISREx/status/1101570444426018816)

Farewell, Orbital A. Onward to Detailed Survey! http://bit.ly/BBDPhase  (https://t.co/kKEVb8RjTH) #ToBennuAndBack (https://twitter.com/hashtag/ToBennuAndBack?src=hash)
https://www.asteroidmission.org/detailed-survey-bbd/
Цитата
DETAILED SURVEY: BASEBALL DIAMOND PHASE
(https://www.asteroidmission.org/wp-content/uploads/2019/02/DetailedSurveyBBD.gif) (https://www.asteroidmission.org/detailedsurveybbd/)

After completing Orbital A, OSIRIS-REx begins its in-depth study of asteroid Bennu in earnest during the Detailed Survey: Baseball Diamond phase (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf). During this phase, the spacecraft will back away a few kilometers from Bennu and make multiple passes to fully observe the asteroid with the OCAMS imager from the range viewing angles needed to produce global mosaics and maps. The spacecraft will also use its OTES spectrometer to map the chemical composition of Bennu's entire surface.

Images obtained during this phase will be of high enough resolution to produce digital terrain maps and global image mosaics for proposed sample sites. Bennu's terrain will be surveyed in bulk, and sections will be classified as either "safe" or "unsafe," with the results visualized on a hazard map.

(https://www.asteroidmission.org/wp-content/uploads/2019/02/DetailedSurveyGlobalStill-300x169.jpg) (https://www.asteroidmission.org/detailedsurveyglobalstill/)

The phase's name comes from the early stage of mission design when the stations the spacecraft would traverse were arranged in the shape of a baseball diamond.  Although the mission design has since evolved, the original name for the phase remains.

The Detailed Survey: Baseball Diamond phase is scheduled to last until mid-April when the spacecraft will move into Detailed Survey: Equatorial Stations. Get an overview of all the phases of Asteroid Operations (https://www.asteroidmission.org/asteroid-operations/).
Название: OSIRIS-REx
Отправлено: zandr от 09.03.2019 23:57:40
https://tass.ru/kosmos/6200930
ЦитатаСМИ: ученые просят пользователей интернета найти все валуны на поверхности астероида Бенну
ВАШИНГТОН, 9 марта. /ТАСС/. Ученые из Национального управления по аэронавтике и исследованию космического пространства (NASA) обратились к пользователям интернета с просьбой - помочь срочно найти и отметить на специальной карте все валуны на поверхности астероида Бенну, чтобы специалисты смогли выбрать подходящую точку для забора образца грунта. Об этом рассказал интернет-портал Space.com (https://www.space.com/nasa-needs-help-mapping-asteroid-bennu.html).
Дело в том, что у ученых будет всего шесть недель с момента, когда американский космический аппарат OSIRIS-REx, находящийся на орбите астероида, завершит составление детального снимка его поверхности, и до того времени, когда необходимо будет выбрать место забора грунта. За столь короткий срок ученые с их численным составом не успеют завершить эту работу.

"Задача нанести на карту все до единого валуны на поверхности астероида действительно масштабная, и мы, честно говоря, просто не нашли другого способа сделать это за имеющийся у нас промежуток времени", - пояснила участница проекта Карина Беннетт. "Нам на самом деле действительно нужна помощь", - добавила она.

Карта валунов необходима специалистам для того, чтобы не повредить во время забора грунта манипулятор, снабженный специальным пневматическим устройством. Если они будут знать точное расположение камней, то смогут выбрать более подходящее место. Проблема еще и в том, что поверхность астероида оказалась намного более неровной, нежели предполагалось изначально. "На ней намного больше камней и валунов, чем мы ожидали", - объясняет Беннетт.
Снимок поверхности космического объекта выложат на специальном сайте в конце апреля - начале мая. Тогда же и пойдет отсчет периода в шесть недель, за который добровольцы должны будут внимательно просмотреть фотографии и пометить границы валунов. "Я думаю, что наиболее интересная составляющая этой работы заключается в том, что вы на самом деле вносите свой вклад в принятие решения", - считает Беннетт. "Вы сможете потом посмотреть, как мы будем брать образец, и, возможно, увидите тот самый район, где вы сами отмечали валуны", - отметила она.
Станция на орбите астероида"]Станция OSIRIS-REx, выведенная в космос в сентябре 2016 года, оснащена несколькими приборами, в том числе, фотокамерами, спектрометрами и лазерным высотомером. В конце декабря 2018 года она вышла на орбиту астероида Бенну и находится там для того, чтобы выбрать подходящую точку для забора образца грунта.

Сама операция запланирована на середину 2020 года: манипулятор, снабженный специальным пневматическим устройством, коснется поверхности астероида. В общей сложности сотрудники NASA рассчитывают собрать от 60 г до 2 кг астероидного грунта. Возвращение на Землю капсулы с собранным грунтом намечено на сентябрь 2023 года.

Бенну имеет диаметр около 550 м и вращается по эллиптической орбите вокруг Солнца. Астрономы относят его к Аполлонам - астероидам, орбиты которых пересекают орбиту Земли. Вероятность столкновения с ним составляет 1 к 4000. Его падение на Землю было бы эквивалентно взрыву мощностью 2700 Мт.

OSIRIS-REx является одним из трех аппаратов, созданных экспертами NASA для запуска в дальний космос по программе New Frontiers. Два других - это межпланетная станция New Horizons, которая должна сблизиться с астероидом Ультима Туле, и автоматическая межпланетная станция Juno, при помощи которой ведутся исследования Юпитера.
Название: OSIRIS-REx
Отправлено: tnt22 от 15.03.2019 20:12:12
https://www.asteroidmission.org/2019-02-25-regolith-image-compilation-3/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/03/2019-02-25-Regolith-Image-Compilation.jpg)

A Region of Bennu's Northern Hemisphere Close Up

This trio of images acquired by NASA's OSIRIS-REx spacecraft shows a wide shot and two close-ups of a region in asteroid Bennu's northern hemisphere. The wide-angle image (left), obtained by the spacecraft's MapCam camera, shows a 590-foot (180-meter) wide area with many rocks, including some large boulders, and a "pond" of regolith that is mostly devoid of large rocks. The two closer images, obtained by the high-resolution PolyCam camera, show details of areas in the MapCam image, specifically a 50-foot (15 meter) boulder (top) and the regolith pond (bottom). The PolyCam frames are 101 feet (31 meters) across and the boulder depicted is approximately the same size as a humpback whale.

The images were taken on February 25 while the spacecraft was in orbit around Bennu, approximately 1.1 miles (1.8 km) from the asteroid's surface. The observation plan for this day provided for one MapCam and two PolyCam images every 10 minutes, allowing for this combination of context and detail of Bennu's surface.

Date Taken: Feb. 25, 2019

Instrument Used: OCAMS (MapCam and PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 18.03.2019 22:13:06
https://www.asteroidmission.org/20190227t002051s742_map_iofl2pan/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/03/20190227T002051S742_map_iofL2pan.png)

Various Surface Textures of Bennu's Boulders

The boulders on Bennu's surface sport a variety of surface textures, from smooth, to hummocky, striated, and crumbly "cauliflower" in nature. The large boulder in the image center is ~92 ft (~28 m) across and has a somewhat round shape, though many smaller boulders surrounding it are very angular. Some of these appear to be fragments that may have disaggregated from the central boulder and display layering effects that may reflect some of the properties of their mineral composition. Other boulders show signs of surface exfoliation and fractures that may have been caused by impacts, mechanical weathering, and other forms of rock breakdown active on Bennu's surface.

This image was obtained by the MapCam camera on NASA's OSIRIS-REx spacecraft on February 27 from a distance of 0.8 miles (1.3 km) and shows a region of the asteroid's southern hemisphere near its south pole.

Date Taken: Feb. 27, 2019

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 19.03.2019 20:48:27
https://ria.ru/20190319/1551937568.html
ЦитатаЗонд НАСА раскрыл секрет рождения и родину "астероида судного дня"
20:30

МОСКВА, 19 мар - РИА Новости. Самый опасный околоземный астероид Бенну возник внутри главного пояса астероидов относительно недавно, около 100 миллионов лет назад, в результате мощного "космического ДТП", раздробившего на части несколько еще более крупных объектов. Об этом пишут участники научной команды зонда OSIRIS-REx в серии статей в журнале Nature (http://www.nature.com/collections/osiris-rex).
Цитата"Первые спектроскопические данные показывают, что Бенну действительно содержит первичную материю Солнечной системы и что ее возврат на Землю поможет нам понять, как вода появилась на Земле и какую роль она играла в эволюции Солнечной системы. Пока все говорит о том, что астероиды действительно могли "завезти" ее на нашу планету", -- пишут Данте Лауретта (Dante Lauretta), руководитель миссии, и его коллеги.
В начале сентября 2016 года специалисты НАСА успешно вывели на околоземную орбиту зонд OSIRIS-REx, главная цель которого - сближение и забор грунта с поверхности астероида Бенну (1999 RQ36). Он успешно достиг этого небесного тела в начале декабря и передал на Землю первые фотографии "астероида судного дня".

Он оказался очень похож по форме и окраске на еще одно небесное тело, астероид Рюгю, который сейчас изучается японской миссией "Хаябуса-2". В ближайшие шесть месяцев OSIRIS-REx будет составлять карту поверхности Бенну, после чего ученые выберут место, откуда будет взят образец вещества массой около 60 грамм.

В отличие от Рюгю, где японский зонд "Хаябуса-2" не нашел воды, датчики OSIRIS-REx зафиксировали большие количества следов ее присутствия в породах "астероида судного дня". По текущим оценкам ученых, материя Бенну содержит в себе рекордное количество минералов, возникших под действием жидкой воды или других форм влаги.

Помимо воды, ученые нашли намеки на то, что недра Бенну устроены крайне хаотичным образом и содержат в себе большое число пустот и особо плотных зон. Это говорит о том, что "астероид судного дня" возник из осколков других крупных небесных тел, живших в главном поясе астероидов и столкнувшихся в относительно недавнем прошлом.

Судя по числу кратеров на его поверхности, Лауретта и его коллеги предполагают, что это произошло примерно 100-1000 миллионов лет назад. В свою очередь, необычная форма астероида, похожего на угловатую юлу или гигантский кубик сахара, возникла по одному из двух еще более экзотических сценариев.

С одной стороны, в прошлом Бенну мог обладать небольшим "спутником", который он разорвал на части, что привело к формированию "горба" на его экваторе. С другой стороны, он мог приобрести кубическую форму благодаря тому, что часть его внутренних пустот обрушилась, а поверхность - сильно просела или просто деформировалась.

Что еще интересно, ученые измерили скорость вращения Бенну и обнаружили, что она достаточно быстро растет. По их оценкам, она должна была удвоиться за последние 1,5 миллиона лет. Подобное ускорение вращения "астероида судного дня", как предполагают исследователи, началось относительно недавно, так как за 100 миллионов лет жизни он бы разогнался до таких значений, что стал бы нестабильным.

Это, по всей видимости, означает, что орбита Бенну могла сильно меняться в недавнем прошлом, или же форма астероида была совсем другой в прошлые эпохи его жизни. Как это повлияет на его будущее и на состояние его запасов "первичной материи" Солнечной системы, предсказать достаточно сложно.

Пока, как отмечают Лауретта и его коллеги, ученым не удалось найти следы органики на поверхности "астероида судного дня" и понять, откуда берется загадочная пыль в его ближайших окрестностях. Оба этих вопроса, как надеются планетологи, будут решены после сближения и забора материи с его поверхности.

По их текущим планам, эта процедура состоится в июле следующего года, однако уже сейчас специалисты НАСА, памятуя о проблемах "Хаябусы-2", выбрали четыре наиболее интересных и безопасных точки для забора образцов на экваторе и в приполярных регионах Бенну.

В ближайшее время OSIRIS-REx совершит несколько "нырков" в сторону этих точек и детально изучит их структуру для выбора основного и резервного места для посадки. Если эта процедура пройдет успешно и ей не помешают булыжники, усеивающие поверхность Бенну, зонд запустит капсулу с первичной материей Солнечной системы в сторону Земли. Она совершит посадку на территории штата Юта в конце сентября 2023 года.
Название: OSIRIS-REx
Отправлено: tnt22 от 19.03.2019 21:01:23
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 10:38 PDT (https://twitter.com/OSIRISREx/status/1108060126987108359) - 19 мар. 2019 г.

The images and other data from my first three months studying Bennu up close reveal some surprises. For one, the asteroid is even more rugged than we realized - with more boulders and a wider range of reflectivity (albedo). #BennuRevealed (https://twitter.com/hashtag/BennuRevealed?src=hash) #LPSC2019 (https://twitter.com/hashtag/LPSC2019?src=hash) http://bit.ly/BennuRocks  (https://t.co/6jvt3iAwpf)

(https://pbs.twimg.com/media/D2Cec_nWoAAQS2n.jpg)


10:39 PDT (https://twitter.com/OSIRISREx/status/1108060347066470401) - 19 мар. 2019 г.

The models my team used to estimate boulder density on Bennu predicted a much smoother surface with fewer large boulders. The data I've collected suggest that these models need to be revised to better predict the nature of small rocky asteroid surfaces. #BennuRevealed (https://twitter.com/hashtag/BennuRevealed?src=hash) #LPSC2019 (https://twitter.com/hashtag/LPSC2019?src=hash)


10:42 PDT (https://twitter.com/OSIRISREx/status/1108061206399668227) - 19 мар. 2019 г.

From ground observations we knew that Bennu was spinning faster over time, but we weren't certain why. We can now confirm that this increase in speed - about one second every 100 years - is due to the YORP effect. #BennuRevealed (https://twitter.com/hashtag/BennuRevealed?src=hash) #LPSC2019 (https://twitter.com/hashtag/LPSC2019?src=hash) http://bit.ly/BennuMosaicGIF  (https://t.co/r00angP7uX)


 10:43 PDT (https://twitter.com/OSIRISREx/status/1108061360515100673) - 19 мар. 2019 г.

The YORP effect occurs when sunlight hits a spinning object like an asteroid and is reflected or radiated back into space as heat. Over time, this small force changes the asteroid's rotation - in Bennu's case speeding it up. (https://abs.twimg.com/emoji/v2/72x72/2600.png) (https://abs.twimg.com/emoji/v2/72x72/27a1.png) (https://abs.twimg.com/emoji/v2/72x72/2604.png) #BennuRevealed (https://twitter.com/hashtag/BennuRevealed?src=hash) #LPSC2019 (https://twitter.com/hashtag/LPSC2019?src=hash)


 10:44 PDT (https://twitter.com/OSIRISREx/status/1108061660151992322) - 19 мар. 2019 г.

We all know Bennu is attractive, but by using data from my MapCam imager and OTES spectrometer, my team has confirmed the presence of magnetite in the asteroid's dark spot - bolstering the evidence that Bennu's parent body was home to liquid water. (https://abs.twimg.com/emoji/v2/72x72/2604.png)(https://abs.twimg.com/emoji/v2/72x72/1f4a6.png) #BennuRevealed (https://twitter.com/hashtag/BennuRevealed?src=hash) #LPSC2019 (https://twitter.com/hashtag/LPSC2019?src=hash)

(https://pbs.twimg.com/media/D2CgISgWkAALO66.jpg)


10:47 PDT (https://twitter.com/OSIRISREx/status/1108062375264030720) - 19 мар. 2019 г.

Another surprise Bennu served up: plumes of particles erupting from the asteroid's surface. In fact, my NavCam 1 imager captured the first-ever close-up observations of material being released from an "active asteroid." https://go.nasa.gov/2UL0Y4i  (https://t.co/1KYao07NUF) #BennuRevealed (https://twitter.com/hashtag/BennuRevealed?src=hash) #LPSC2019 (https://twitter.com/hashtag/LPSC2019?src=hash)

(https://pbs.twimg.com/media/D2Cgl2VWwAEsS03.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 19.03.2019 21:29:51
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 10:50 PDT (https://twitter.com/OSIRISREx/status/1108063135175503873) - 19 мар. 2019 г.

As I survey Bennu in detail, my team is beginning to identify potential locations for me to collect a sample. I imaged this candidate sample site in Bennu's northern hemisphere with my PolyCam camera on March 7 from a distance of about 3.1 miles (5 km). #BennuRevealed (https://twitter.com/hashtag/BennuRevealed?src=hash) #LPSC2019 (https://twitter.com/hashtag/LPSC2019?src=hash)

(https://pbs.twimg.com/media/D2ChecgWsAA34b1.png)


10:52 PDT (https://twitter.com/OSIRISREx/status/1108063782310416384) - 19 мар. 2019 г.

During Orbital A, I transitioned from using star-based navigation to using landmarks on Bennu's surface for way-finding. My navigation performance was more accurate than the GPS on a smart phone and 10x better than expected before I arrived at Bennu. #BennuRevealed (https://twitter.com/hashtag/BennuRevealed?src=hash) #LPSC2019 (https://twitter.com/hashtag/LPSC2019?src=hash)

(https://pbs.twimg.com/media/D2CiGkhWkAAlltb.jpg)


10:54 PDT (https://twitter.com/OSIRISREx/status/1108064123361865729) - 19 мар. 2019 г.

My team is also using navigation tools to help track and study the material Bennu is ejecting from its surface. This composite image from NavCam 1 shows the trajectories of particles released Jan. 19 (green arrows) and background stars (yellow diamonds). #BennuRevealed (https://twitter.com/hashtag/BennuRevealed?src=hash) #LPSC2019 (https://twitter.com/hashtag/LPSC2019?src=hash)

(https://pbs.twimg.com/media/D2CiSUfW0AAVVMI.jpg)


10:55 PDT (https://twitter.com/OSIRISREx/status/1108064340370845696) - 19 мар. 2019 г.

To safely collect a sample, my original mission design called for a hazard-free area with an 82-ft (25 m) radius. With so many boulders on Bennu, I'll need to target a much smaller area - about the size of the loose material "pond" in the upper left of this image. #BennuRevealed (https://twitter.com/hashtag/BennuRevealed?src=hash)

(https://pbs.twimg.com/media/D2Cijs2WoAAvJuy.png)


10:56 PDT (https://twitter.com/OSIRISREx/status/1108064756466925568) - 19 мар. 2019 г.

A smaller sample site footprint will require my descent to Bennu's surface during the touch-and-go sampling maneuver (TAG) to be more accurate than originally planned. My team is developing an updated approach, called Bullseye TAG, to target smaller sample sites.(https://abs.twimg.com/emoji/v2/72x72/1f3af.png) #BennuRevealed (https://twitter.com/hashtag/BennuRevealed?src=hash)

Video (https://twitter.com/i/videos/tweet/1108064756466925568)
Название: OSIRIS-REx
Отправлено: tnt22 от 19.03.2019 22:11:11
https://www.nasa.gov/press-release/nasa-mission-reveals-asteroid-has-big-surprises
ЦитатаMarch 19, 2019
RELEASE 19-020

NASA Mission Reveals Asteroid Has Big Surprises

(https://www.nasa.gov/sites/default/files/styles/full_width/public/thumbnails/image/3_lauretta_bennu_particle_jets_0.jpg?itok=ziR4Jkj4) (https://www.nasa.gov/sites/default/files/thumbnails/image/3_lauretta_bennu_particle_jets_0.jpg)
This view of asteroid Bennu ejecting particles fr om its surface on January 19 was created by combining two images taken on board NASA's OSIRIS-REx spacecraft. Other image processing techniques were also applied, such as cropping and adjusting the brightness and contrast of each image.
Credits: NASA/Goddard/University of Arizona/Lockheed Martin


A NASA spacecraft that will return a sample of a near-Earth asteroid named Bennu (https://solarsystem.nasa.gov/asteroids-comets-and-meteors/asteroids/101955-bennu/overview/) to Earth in 2023 made the first-ever close-up observations of particle plumes erupting from an asteroid's surface. Bennu also revealed itself to be more rugged than expected, challenging the mission team to alter its flight and sample collection plans, due to the rough terrain. 

Bennu is the target of NASA's Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) mission, which began orbiting the asteroid on Dec. 31. Bennu, which is only slightly wider than the height of the Empire State Building, may contain unaltered material from the very beginning of our solar system.

"The discovery of plumes is one of the biggest surprises of my scientific career," said Dante Lauretta, OSIRIS-REx principal investigator at the University of Arizona, Tucson. "And the rugged terrain went against all of our predictions. Bennu is already surprising us, and our exciting journey there is just getting started."

Shortly after the discovery of the particle plumes on Jan. 6, the mission science team increased the frequency of observations, and subsequently detected additional particle plumes during the following two months. Although many of the particles were ejected clear of Bennu, the team tracked some particles that orbited Bennu as satellites before returning to the asteroid's surface.

The OSIRIS-REx team initially spotted the particle plumes in images while the spacecraft was orbiting Bennu at a distance of about one mile (1.61 kilometers). Following a safety assessment, the mission team concluded the particles did not pose a risk to the spacecraft. The team continues to analyze the particle plumes and their possible causes.

"The first three months of OSIRIS-REx's up-close investigation of Bennu have reminded us what discovery is all about -- surprises, quick thinking, and flexibility," said Lori Glaze, acting director of the Planetary Science Division at NASA Headquarters in Washington. "We study asteroids like Bennu to learn about the origin of the solar system. OSIRIS-REx's sample will help us answer some of the biggest questions about wh ere we come from."
OSIRIS-REx launched in 2016 to explore Bennu, which is the smallest body ever orbited by spacecraft. Studying Bennu will allow researchers to learn more about the origins of our solar system, the sources of water and organic molecules on Earth, the resources in near-Earth space, as well as improve our understanding of asteroids that could impact Earth.

The OSIRIS-REx team also didn't anticipate the number and size of boulders on Bennu's surface. From Earth-based observations, the team expected a generally smooth surface with a few large boulders. Instead, it discovered Bennu's entire surface is rough and dense with boulders.

The higher-than-expected density of boulders means that the mission's plans for sample collection, also known as Touch-and-Go (TAG), need to be adjusted. The original mission design was based on a sample site that is hazard-free, with an 82-foot (25-meter) radius. However, because of the unexpectedly rugged terrain, the team hasn't been able to identify a site of that size on Bennu. Instead, it has begun to identify candidate sites that are much smaller in radius.

The smaller sample site footprint and the greater number of boulders will demand more accurate performance from the spacecraft during its descent to the surface than originally planned. The mission team is developing an updated approach, called Bullseye TAG, to accurately target smaller sample sites.

"Throughout OSIRIS-REx's operations near Bennu, our spacecraft and operations team have demonstrated that we can achieve system performance that beats design requirements," said Rich Burns, the project manager of OSIRIS-REx at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "Bennu has issued us a challenge to deal with its rugged terrain, and we are confident that OSIRIS-REx is up to the task."

The original, low-boulder estimate was derived both from Earth-based observations of Bennu's thermal inertia -- or its ability to conduct and store heat -- and from radar measurements of its surface roughness. Now that OSIRIS-REx has revealed Bennu's surface up close, those expectations of a smoother surface have been proven wrong. This suggests the computer models used to interpret previous data do not adequately predict the nature of small, rocky, asteroid surfaces. The team is revising these models with the data from Bennu.

The OSIRIS-REx science team has made many other discoveries about Bennu in the three months since the spacecraft arrived at the asteroid, some of which were presented Tuesday at the 50th Lunar and Planetary Conference in Houston and in a special collection of papers issued by the journal Nature.

The team has directly observed a change in the spin rate of Bennu as a result of what is known as the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect. The uneven heating and cooling of Bennu as it rotates in sunlight is causing the asteroid to increase its rotation speed. As a result, Bennu's rotation period is decreasing by about one second every 100 years. Separately, two of the spacecraft's instruments, the MapCam color imager and the OSIRIS-REx Thermal Emission Spectrometer (OTES), have made detections of magnetite on Bennu's surface, which bolsters earlier findings indicating the interaction of rock with liquid water on Bennu's parent body.

Goddard provides overall mission management, systems engineering, and the safety and mission assurance for OSIRIS-REx. Dante Lauretta of the University of Arizona, Tucson, is the principal investigator, and the University of Arizona also leads the science team and the mission's science observation planning and data processing. Lockheed Martin Space in Denver built the spacecraft and is providing flight operations. Goddard and KinetX Aerospace are responsible for navigating the OSIRIS-REx spacecraft. OSIRIS-REx is the third mission in NASA's New Frontiers Program, which is managed by NASA's Marshall Space Flight Center in Huntsville, Alabama, for the agency's Science Mission Directorate in Washington.
Last Updated: March 19, 2019
Editor: Sean Potter
Название: OSIRIS-REx
Отправлено: tnt22 от 19.03.2019 22:24:08
ЦитатаBennu is an active asteroid

SciNews (https://www.youtube.com/channel/UCjU6ZwoTQtKWfz1urL7XcbA)

Опубликовано: 19 мар. 2019 г.

NASA's OSIRIS-REx mission returned the first scientific observations, revealing that asteroid Bennu is an active active asteroid. OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer) is the first U.S. mission to sample an asteroid (near-Earth asteroid Bennu), retrieve surface material and return it to Earth for study in September 2023. Dante Lauretta, OSIRIS-REx principal investigator, explained the findings in a media teleconference.

Credit:
NASA/Goddard/University of Arizona/Arizona State University/Lockheed Martin
https://www.youtube.com/watch?v=nmfS2Vb-B7ohttps://www.youtube.com/watch?v=nmfS2Vb-B7o (https://www.youtube.com/watch?v=nmfS2Vb-B7o) (6:07)
Название: OSIRIS-REx
Отправлено: tnt22 от 20.03.2019 11:50:46
https://tass.ru/kosmos/6236792
Цитата20 МАР, 08:21
В NASA рассказали о поверхности астероида Бенну

Ученые выяснили, что поверхность космического объекта покрыта большим количеством кратеров и испускает шлейфы частиц

НЬЮ-ЙОРК, 20 марта. /ТАСС/. Поверхность астероида Бенну покрыта намного большим количеством кратеров, чем предполагалось, и испускает шлейфы частиц, которые подобно спутникам обращаются вокруг астероида. Об этом открытии сообщило во вторник Национальное управление по аэронавтике и исследованию космического пространства (NASA) США, изложив результаты исследований Бенну, проведенных с борта космического аппарата OSIRIS-REx.

NASA придает большое значение изучению астероида, так как считает, что он может содержать образцы материи, сохранившиеся в первозданном виде с момента формирования нашей Солнечной системы. "Обнаружение шлейфов частиц стало одним из крупнейших сюрпризов в моей научной карьере", - признал Данте Лауретта из Университета Аризоны в Тусоне, возглавляющий группу научных работников, занимающихся обработкой данных бортовых приборов OSIRIS-REx. "Сильно пересеченный рельеф ниспровергает все наши предсказания. Бенну уже нас поражает, а ведь увлекательное путешествие только началось", - добавил профессор.

Как уточнило NASA, шлейфы частиц, срывающиеся с поверхности астероида, были обнаружены OSIRIS-REx с расстояния 1,61 км 6 января. Ученые - участники этого проекта приняли решение увеличить частоту наблюдений за Бенну и в течение двух месяцев выявили дополнительные струи частиц. Некоторые из них подобно спутникам обращались вокруг астероида и возвращались на его поверхность. На всякий случай исследователи провели проверку, убедившись, что шлейфы не представляют никакой опасности для космического аппарата.

Станция на орбите астероида
Станция OSIRIS-REx, выведенная в космос в сентябре 2016 года, оснащена несколькими приборами, в том числе фотокамерами, спектрометрами и лазерным высотомером. 31 декабря 2018 года она вышла на орбиту астероида Бенну и находится там для того, чтобы выбрать подходящую точку для забора образца грунта.

Сама операция запланирована на середину 2020 года: манипулятор, снабженный специальным пневматическим устройством, коснется поверхности астероида. В общей сложности сотрудники NASA рассчитывают собрать от 60 г до 2 кг грунта. Возвращение на Землю капсулы с собранными образцами намечено на сентябрь 2023 года.

Бенну имеет диаметр около 550 м и вращается по эллиптической орбите вокруг Солнца. Астрономы относят его к Аполлонам - астероидам, орбиты которых пересекают орбиту Земли. Вероятность столкновения с ним составляет 1 к 4000. Его падение на Землю было бы эквивалентно взрыву мощностью 2,7 тыс. Мт.

OSIRIS-REx является одним из трех аппаратов, разработанных экспертами NASA для запуска в космос по программе New Frontiers. Два других - это межпланетная станция New Horizons, которая сближалась с астероидом Ультима Туле 1 января на минимальное расстояние 3540 км, и автоматическая межпланетная станция Juno, при помощи которой ведутся исследования Юпитера.
Название: OSIRIS-REx
Отправлено: tnt22 от 20.03.2019 22:34:29
https://www.asteroidmission.org/bennu-global-mosaic-mar-2019-2/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/03/Bennu-Global-Mosaic-Mar-2019-1.png)

Bennu Global Mosaic

This global map of asteroid Bennu's surface is a mosaic of images collected during OSIRIS-REx's Preliminary Survey phase using the spacecraft's long-range PolyCam camera. Latitude and longitude measurements are shown along the sides of the mosaic.

Date Taken: March 19, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: zandr от 21.03.2019 21:35:18
https://nplus1.ru/news/2019/03/14/seismic-stars
ЦитатаАстрономы заметили ускорение вращения астероида Бенну
(https://nplus1.ru/images/2019/03/14/1cca90ae46505c3103c4f7a6a1347a95.gif)
Анимация вращения Бенну, смонтированная из снимков, полученных камерой MapCam 4 декабря 2018 года перед первым пролетом OSIRIS-REx над северным полюсом астероида.
NASA/Goddard/University of Arizona

Астрономы обнаружили, что период вращения астероида Бенну, который сейчас изучает межпланетная станция OSIRIS-REx, сокращается примерно на одну секунду каждые сто лет. Это может привести к его разрушению через несколько миллионов лет, а за процесс ускорения, по мнению ученых, ответственен YORP-эффект.  Статья опубликована (https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018GL080658) в журнале Geophysical Research Letters.
500-метровый околоземный астероид (101955) Бенну (https://ru.wikipedia.org/wiki/(101955)_%D0%91%D0%B5%D0%BD%D0%BD%D1%83) является представителем углеродных астероидов спектрального класса В (https://ru.wikipedia.org/wiki/%D0%90%D1%81%D1%82%D0%B5%D1%80%D0%BE%D0%B8%D0%B4_%D0%BA%D0%BB%D0%B0%D1%81%D1%81%D0%B0_B). Изучение подобных объектов может дать важную информацию о формировании и эволюции Солнечной системы, кроме того, считается, что богатые углеродом астероиды, такие как Бенну, могут быть ответственны за поставку аминокислот и воды на молодую Землю. Бенну был выбран в качестве цели для автоматической межпланетной станции OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer), которая в настоящее время изучает его с орбиты. В начале июля 2020 года станция сблизится с поверхностью астероида и соберет с нее при помощи специального манипулятора 60 граммов пыли и фрагментов породы, после чего, в марте 2021 года, космический аппарат отправится к Земле и сбросит в атмосферу капсулу с грунтом в сентябре 2023 года.

В новой работе группа астрономов во главе с Майком Ноланом (Mike Nolan) изучала, как изменяется скорость вращения астероида со временем. Для этой цели ученые проанализировали данные наземных наблюдений за Бенну, проводившихся в 1999 и 2005 годах, а также данные за 2012 год, полученные космическим телескопом «Хаббл» и новые результаты, полученные OSIRIS-REx. Оказалось, что период вращения Бенну сокращается примерно на одну секунду каждые сто лет, это может привести к тому, что в течение нескольких миллионов лет скорость вращения астероида вырастет достаточно сильно для того, чтобы начался процесс его разрушения. Сейчас, по данным OSIRIS-REx, Бенну совершает один оборот вокруг своей оси за 4,3 часа.
Существует несколько гипотез, объясняющих изменение скорости вращения, такие как изменение момента инерции из-за столкновения с другим объектом или потерей массы в результате различных процессов. Однако наиболее вероятным механизмом ускорения, которое наблюдалось у других околоземных астероидах, начиная с (54509) YORP, (https://ru.wikipedia.org/wiki/(54509)_YORP) является эффект Ярковского -- О'Кифа -- Радзиевского -- Пэддэка (https://ru.wikipedia.org/wiki/YORP-%D1%8D%D1%84%D1%84%D0%B5%D0%BA%D1%82), заключающийся в изменении скорости вращения астероида ассиметричной формы под действием солнечного излучения. Правильность этой идеи должен подтвердить OSIRIS-REx на основании дальнейших наблюдений, в ходе которых он определит точную форму астероида, тепловые свойства поверхности и распределение силы тяжести вблизи нее.
Еще одна действующая миссия по доставке грунта с астероида -- автоматическая станция «Хаябуса-2» (https://en.wikipedia.org/wiki/Hayabusa2). Зонд 27 июня 2018 года прибыл (https://nplus1.ru/news/2018/06/27/arrival-Ryugu) к своей цели -- астероиду 162173 Ryugu (https://en.wikipedia.org/wiki/162173_Ryugu), который принадлежит к наиболее распространенному типу астероидов -- классу С. Изучение химических свойств его вещества позволит ученым судить о составе протосолнечной туманности.
Александр Войтюк
Название: OSIRIS-REx
Отправлено: tnt22 от 22.03.2019 08:08:04
Цитата3D Shape Model of Asteroid Bennu

NEW HORIZONS v2.0 (https://www.youtube.com/channel/UC4QskJGkMLGHily1CaSeskw)

Опубликовано: 20 мар. 2019 г.

Credit: NASA/Goddard/University of Arizona/Roman Tkachenko
https://www.youtube.com/watch?v=udoaJty0rjQhttps://www.youtube.com/watch?v=udoaJty0rjQ (https://www.youtube.com/watch?v=udoaJty0rjQ) (0:20)
Название: OSIRIS-REx
Отправлено: tnt22 от 27.03.2019 20:41:56
https://www.nasa.gov/image-feature/goddard/2019/bennu-in-stereo
ЦитатаMarch 27, 2019

Bennu in Stereo

(https://www.nasa.gov/sites/default/files/styles/full_width_feature/public/thumbnails/image/bennus_boulder_1_stereo_pair_cross-eyed_version.jpg) (https://www.nasa.gov/sites/default/files/thumbnails/image/bennus_boulder_1_stereo_pair_cross-eyed_version.jpg)

This set of stereoscopic images provides a 3D view of the large, 170-foot (52-meter) boulder that juts from asteroid Bennu's southern hemisphere and the rocky slopes that surround it. The stereo pair was created by stereo image processing scientists Dr. Brian May, who is also the lead guitarist for the rock band Queen, and Claudia Manzoni. In January, May and Manzoni formally joined NASA's OSIRIS-REx mission science team as collaborators to create stereoscopic data products, which will be used by the team while selecting a sample collection site on Bennu.

"I'm proud to have been adopted as a collaborator on the OSIRIS-REx team, along with my colleague Claudia Manzoni," said May. "Our passion is producing stereoscopic (3-D) images from the astounding data that the OSIRIS-REx mission has been collecting."

The two images in this stereo pair were taken from slightly different viewpoints, with one of the images meant for the left eye and the other for the right. The two images are then combined by the brain to give the perception of depth. To see the pair in 3D, cross your eyes and relax your vision until there are three images, then focus on the center image. Tilt your head as needed to bring the image into focus. A version of the image suitable for viewing through a stereoscope can be found here (https://www.asteroidmission.org/bennus-boulder-1-stereo-pair-stereoscope-version/).

The cropped and processed images were obtained on December 1 and 2, 2018, by the PolyCam camera during the spacecraft's final approach toward the asteroid.

Credit: NASA/Goddard/University of Arizona

Last Updated: March 27, 2019
Editor: Karl Hille
Название: OSIRIS-REx
Отправлено: tnt22 от 28.03.2019 22:00:51
https://www.asteroidmission.org/updated-bennu-shape-model-3d-files/
Цитата75-CENTIMETER SHAPE MODEL (MAR. 2019)

After studying asteroid Bennu at close range for three months, the OSIRIS-REx mission team has developed a new shape model with a 75-centimeter resolution. This more precise model, which was created using imagery taken by OSIRIS-REx's PolyCam camera, shows features on Bennu smaller than one meter.

(https://www.asteroidmission.org/wp-content/uploads/2019/03/v20_SHAPEA_24fps_sm_1.gif) (https://www.asteroidmission.org/updated-bennu-shape-model-3d-files/v20_shapea_24fps_sm_1/#main)

Credit: NASA/Goddard/University of Arizona
OBJ FILE (https://www.asteroidmission.org/wp-content/uploads/2019/03/Bennu_v20_200k.obj)
STL FILE (https://www.asteroidmission.org/wp-content/uploads/2019/03/Bennu_v20_200k.stl)
Название: OSIRIS-REx
Отправлено: tnt22 от 01.04.2019 19:43:00
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 41 мин. назад (https://twitter.com/OSIRISREx/status/1112747108015104000)

This week I'm gearing up for Flyby 5 of Detailed Survey: Baseball Diamond phase. On Thurs., I'll be flying north to south, imaging Bennu with PolyCam, OLA and OTES from a distance of 1.9 - 3.1 miles (3.1 - 5 km).

More on my whereabouts: http://bit.ly/WhereIsOREX  (https://t.co/rACre4nDe4)

(https://pbs.twimg.com/media/D3FFZ9tU4AAXJLq.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 02.04.2019 20:31:58
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 10 мин. назад (https://twitter.com/OSIRISREx/status/1113129110987931648)

Somewhere on this rock - in one of these views - is the spot that will ultimately be chosen as our sample collection location. The OSIRIS-REx sample site selection campaign is in full swing! Get the downloadable graphic here: https://bit.ly/2FLRvnf  (https://t.co/dXe3bEeZeM)
https://bit.ly/2FLRvnf --> https://www.asteroidmission.org/bennu-sides-and-global-mosaic/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/Bennu-Sides-and-Global-Mosaic.png)

Four Sides of Bennu with Corresponding Global Mosaic

This image shows four views of asteroid Bennu along with a corresponding global mosaic. The images were taken on Dec. 2, 2018, by the OSIRIS-REx spacecraft's PolyCam camera.

Date Taken: Dec. 2, 2018

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 04.04.2019 13:02:20
ЦитатаOSIRIS-REx: Orbiting Asteroid Bennu

NASA Video (https://www.youtube.com/channel/UC_aP7p621ATY_yAa8jMqUVA)

Опубликовано: 3 апр. 2019 г.

Olivia Billett, OSIRIS-REx spacecraft science lead at Lockheed Martin, talks about the complexities of orbiting around asteroid Bennu.

The Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft launched Sept. 8, 2016, and began orbiting asteroid Bennu on Dec. 31, 2018. Its primary science objective is to study Bennu and collect a sample for return to Earth in 2023. Bennu is a carbon-rich asteroid that records the earliest history of our solar system, and which may contain the raw ingredients of life.
https://www.youtube.com/watch?v=ukbgNGwrO4Mhttps://www.youtube.com/watch?v=ukbgNGwrO4M (https://www.youtube.com/watch?v=ukbgNGwrO4M) (0:37)
Название: OSIRIS-REx
Отправлено: tnt22 от 04.04.2019 21:23:29
https://www.nasa.gov/image-feature/goddard/2019/osiris-rex-captures-laser-3d-view-of-bennu
ЦитатаApril 4, 2019

OSIRIS-REx Captures Laser 3D View of Bennu

(https://www.nasa.gov/sites/default/files/styles/full_width_feature/public/thumbnails/image/bennuola1.gif) (https://www.nasa.gov/sites/default/files/thumbnails/image/bennuola1.gif)

This three-dimensional view of asteroid Bennu was created by the OSIRIS-REx Laser Altimeter (OLA), contributed by the Canadian Space Agency, on NASA's OSIRIS-REx spacecraft. From Feb. 12 through 17, OLA made more than 11 million measurements of the distance between OSIRIS-REx and Bennu's surface as the spacecraft flew less than 1.2 miles (2 km) above the surface - the closest orbit ever achieved by spacecraft. OLA obtained these measurements by firing laser pulses at Bennu and measuring the amount of time it takes for the light to bounce off the asteroid's surface and return to the instrument. That time measurement is then translated into altitude data. Using this data, the OLA team created the 3-D model of Bennu's surface. The colors represent the distance from the center of Bennu: dark blue areas lie approximately 197 feet (60 meters) lower than peaks indicated in red. Some parts of the asteroid have not yet been measured, which creates gaps in the image. OLA will take nearly a billion more measurements throughout 2019 to complete the first-ever high-resolution 3D lidar map of a near-Earth asteroid.

Credit: NASA/University of Arizona/CSA/York/MDA

Last Updated: April 4, 2019
Editor: Karl Hille
Название: OSIRIS-REx
Отправлено: tnt22 от 06.04.2019 00:10:05
https://www.asteroidmission.org/20190329-fb4-equator-view/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/20190329-FB4-Equator-View.png)

Bennu's Equatorial Ridge

On March 29, the PolyCam camera on NASA's OSIRIS-REx spacecraft took this image of a region of dark regolith on asteroid Bennu. When the image was taken, the spacecraft was positioned over Bennu's northern hemisphere, looking southward over the asteroid's equatorial bulge. The field of view shown is 168 ft (51.2 m) wide. For scale, the bright, rectangular rock above the dark region is 8 ft (2.4 m) wide, about the size of a long bed on a pickup truck. This image was taken during Flyby 4 of the mission's Detailed Survey: Baseball Diamond phase.

Date Taken: Mar. 29, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 09.04.2019 00:44:47
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 3 ч. назад (https://twitter.com/OSIRISREx/status/1115320880802848768)

This week is Flyby 6 A&B of Detailed Survey: Baseball Diamond phase. On Thurs. and Fri., I'll be flying south to north, imaging Bennu with PolyCam, OLA and OTES from a distance of 1.9 - 3.1 miles (3.1 - 5 km). For more on this week's ops plan: https://bit.ly/2U5MniW  (https://t.co/mzH33wJgil)

(https://pbs.twimg.com/media/D3pp5sdUYAAbwOF.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.04.2019 21:44:51
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 5 мин. назад (https://twitter.com/OSIRISREx/status/1116047479684755456)

So we're clear, that rock was like that when I got here ...

This image from DS:BBD Flyby 1 shows the rocky surface of Bennu just south of the equator. That cracked rock is 69 ft long, about the length of 4 parallel parking spots.

More detail: https://bit.ly/2IpIKSG  (https://t.co/K6AIU86vNH)
https://www.asteroidmission.org/20190307-polycam-cracked-rock/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/20190307-PolyCam-Cracked-Rock.png)

Rocks and Boulders near Bennu's Equator

This image shows the rocky surface of Bennu in a region just south of the asteroid's equator. The PolyCam camera on NASA's OSIRIS-REx spacecraft took the image on March 7 from a distance of 3 miles (4.8 km). The width of the field of view is 185 ft (56.4 m) of Bennu's surface. For scale, the cracked rock at the top of the image is 69 ft (21 m) long, which is about the length of four parallel parking spots. The image was obtained during Flyby 1 of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase.

Date Taken: Mar. 7, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 11.04.2019 21:21:55
https://www.asteroidmission.org/20190307-polycam-northern-boulder/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/20190307-PolyCam-Northern-Boulder.png)

Northern Boulder Imaged by PolyCam

This image shows one of the largest boulders on asteroid Bennu's northern hemisphere. It was taken on March 7 by the PolyCam camera on NASA's OSIRIS-REx spacecraft from a distance of 2.9 miles (4.6 km). The field of view in the image is 191 feet (58.2 meters) and the boulder itself measures 77 feet (23.5 meters) on its longest dimension, which is about the same length as one-fourth of an American football field.

The image was obtained during Flyby 1 of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase while the spacecraft was flying over Bennu's equator and pointing PolyCam to the north and west of the asteroid.

Date Taken: March 7, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 12.04.2019 21:45:27
https://www.asteroidmission.org/20190307-southern-boulder-region/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/20190307-Southern-Boulder-Region.png)

20190307 Southern Boulder Region

This image shows a region in the southern hemisphere of asteroid Bennu that contains a large population of boulders. The PolyCam camera on NASA's OSIRIS-REx spacecraft took the image on March 7 from a distance of 3 miles (4.8 km). The field of view for the image is 190 ft (58 m) wide. For scale, the smaller, smooth, rectangular boulder on the left is 40 ft (12.1 m) across, which is about the length of a standard telephone pole. The image was obtained during Flyby 1 of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the equator, pointing PolyCam to the south and east.

Date Taken: Mar. 7, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 16.04.2019 02:56:10
https://www.asteroidmission.org/20190307-polycam-benben/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/20190307-PolyCam-Benben.png)

Bennu's Boulder No. 1 Imaged by PolyCam

This image shows a portion of the largest boulder on Bennu, located in the southern hemisphere. The PolyCam camera on NASA's OSIRIS-REx spacecraft took the image on March 7 from a distance of 3 miles (4.8 km). The field of view for the image is 191 ft (58.2 m) wide. For scale, the shiny rectangular rock just to the north of the boulder is about 5 ft (1.5 m) wide, which is about the length of a bicycle. The image was obtained during Flyby 1 of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the equator, pointing PolyCam to the south and west.

Date Taken: March 7, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 8 ч. назад (https://twitter.com/OSIRISREx/status/1117826000711061505)

This is the last week of Detailed Survey: Baseball Diamond phase. (https://abs.twimg.com/emoji/v2/72x72/1f6f0.png) On Thursday and Friday, Flyby 7 executes. I'll be running a north/south pass, observing Bennu at +/-40° latitude with the MapCam, OLA and OTES instruments.
Название: OSIRIS-REx
Отправлено: tnt22 от 16.04.2019 23:01:04
https://www.asteroidmission.org/20190314-mapcam-southern-limb-and-crater/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/20190314-MapCam-Southern-Limb-and-Crater.png)

Bennu's Southern Limb and Large Crater

This image shows asteroid Bennu's south pole and a large crater in the southern hemisphere. It was taken by the MapCam camera on NASA's OSIRIS-REx spacecraft on March 14 from a distance of 2.2 miles (3.6 km). The field of view is 847 ft (258 m) wide. For scale, the light-colored, rectangular rock at the top of the image is 27 ft (8.3 m) wide, which is the width of a tennis court. The spacecraft obtained the image during Flyby 2 of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase by pointing the camera to the south while flying over the equator.

Date Taken: March 14, 2019

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: dmdimon от 17.04.2019 18:53:39
крупненько 20190329-FB4-Equator-View, кроп (https://testforum.novosti-kosmonavtiki.ru/forum/file/94932)
вот отсюда
(https://testforum.novosti-kosmonavtiki.ru/forum/file/94933)
Название: OSIRIS-REx
Отправлено: tnt22 от 17.04.2019 22:03:24
https://www.asteroidmission.org/20190314-mapcam-eastern-limb-and-boulders/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/20190314-MapCam-Eastern-Limb-and-Boulders.png)

Boulders on Bennu's Eastern Limb

This image provides a view of the region around Bennu's equator. It was taken by the MapCam camera on NASA's OSIRIS-REx spacecraft on March 14 from a distance of 2.2 miles (3.6 km). The field of view is 837 ft (255 m) wide. The large, protruding boulder near the center of the image is 115 ft (35 m) wide, which is about the length of two boxcars. The spacecraft obtained the image during Flyby 2 of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase by pointing the camera to the east while flying over Bennu's equator.

Date Taken: March 14, 2019

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 18.04.2019 22:53:12
https://www.asteroidmission.org/20190314-mapcam-boulders-benben-and-limb/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/20190314-MapCam-Boulders-Benben-and-Limb.png)

Southern View of Bennu from the Equator

This image shows a view of asteroid Bennu from the equator, looking south toward the largest boulder on the asteroid and then off into space. It was taken by the MapCam camera on NASA's OSIRIS-REx spacecraft on March 14 from a distance of 2.2 miles (3.6 km). The field of view is 830 ft (253 m) wide. For scale, the light-colored rock just below the center of the image is 36 ft (11 m) wide, which is about the same length as a telephone pole. The spacecraft obtained the image during Flyby 2 of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase.

Date Taken: March 14, 2019

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 22.04.2019 21:53:49
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 2 ч. назад (https://twitter.com/OSIRISREx/status/1120375177194328064)

This week is the beginning of a new mission phase - Detailed Survey: Equatorial Stations. This phase is designed to obtain the observations needed to hone in on the best sample collection site.

(https://pbs.twimg.com/media/D4xb6QOWwAEaJ1f.jpg)


(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 2 ч. назад (https://twitter.com/OSIRISREx/status/1120375180264480768)

Over the next 7 weeks, I'll be making north/south slews on 7 different stations around Bennu in order to get observations from different sun illumination conditions. More details on my operations during Detailed Survey: Equatorial Stations: https://bit.ly/2VhJMqx  (https://t.co/gLPwzyEAwg)

(https://pbs.twimg.com/media/D4xeLucWwAEIH5l.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 23.04.2019 00:47:39
https://www.asteroidmission.org/20190321-polycam-boulder-field/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/20190321-PolyCam-Boulder-Field.png)

Detail of Boulder Field on Bennu

This image shows a region in the southern hemisphere of asteroid Bennu that contains a mix of large and small boulders. The PolyCam camera on NASA's OSIRIS-REx spacecraft took the image on March 21 from a distance of 2.2 miles (3.5 km). The field of view is 160 ft (49 m). For scale, the large boulder in the upper half the image is 82 ft (25 m) wide, which is a little less than the distance between bases on a baseball diamond. The image was obtained during Flyby 3 of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the equator, pointing PolyCam toward the south of the asteroid.

Date Taken: March 21, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 23.04.2019 22:45:32
https://www.asteroidmission.org/20190321-rocky-south-pole/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/20190321-Rocky-South-Pole.png)

Bennu's Rocky South Pole

This image shows a region near asteroid Bennu's south pole. It was taken on March 21 by the PolyCam camera on NASA's OSIRIS-REx spacecraft from a distance of 2.2 miles (3.5 km). The field of view is 166 ft (50 m). For scale, the pear-shaped, light-colored boulder in the lower left quadrant of the image is about 8 ft (2.4 m) wide, which is the same length as a horse. The image was obtained during Flyby 3 of the mission's Detailed Survey: Baseball Diamond phase (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf). When the image was taken, the spacecraft was flying over the equator, panning to the south.

Date Taken: March 21, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 24.04.2019 23:19:28
https://www.asteroidmission.org/20190321-polycam-boulder-formations-near-equator/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/20190321-PolyCam-Boulder-Formations-Near-Equator.png)

Boulder Formations Near Bennu's Equator

This image shows a small region near asteroid Bennu's equator that contains boulders of differing compositions. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on March 21 from a distance of 2.2 miles (3.5 km). The field of view is 159 ft (48.4 m). For scale, the large, light-colored boulder in the upper right of the image is 31 ft (9.5 m) wide, which is about length of a city bus. The image was obtained during Flyby 3 of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the equator, pointing PolyCam slightly to the south.

Date Taken: March 21, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 24.04.2019 23:22:21
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 25 мин. назад (https://twitter.com/OSIRISREx/status/1121140857967497216)

More on Local Solar Time ...

(https://pbs.twimg.com/media/D48XkbwU4AAV4j-.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 25.04.2019 23:18:04
https://www.asteroidmission.org/20190321-in-the-shadow-of-boulder-no-1/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/20190321-In-The-Shadow-Of-Boulder-No.-1.png)

In the Shadow of Boulder No. 1

This image shows the late-morning shadow cast by the largest boulder on asteroid Bennu. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on March 21 from a distance of 2.2 miles (3.5 km). The field of view is 163 ft (49.7 m). For scale, the smaller, square light-colored rock on the left is 18 ft (5.5 m) wide, which is about the length of a full-size pickup truck. The image was obtained during Flyby 3 of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the equator, pointing PolyCam south.

Date Taken: March 21, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 26.04.2019 22:22:10
https://www.asteroidmission.org/20190328-equatorial-crater-detail/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/20190328-Equatorial-Crater-Detail.png)

Crater Detail near Bennu's Equator

This image shows a portion of a crater near asteroid Bennu's equator. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on March 28 from a distance of 2.2 miles (3.5 km). The field of view is 162 ft (49.4 m). For scale, the bright, thin rock face in the upper left quadrant is 8 ft (2.4 m) long, which is about the same length as a horse. The image was obtained during Flyby 4A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam north.

Date Taken: March 28, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 29.04.2019 22:27:13
https://www.asteroidmission.org/20190328-rocks-on-a-boulder/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/20190328-Rocks-on-a-Boulder.png)

Rocks on a Boulder in Bennu's Southern Hemisphere

This image shows several smaller rocks lying on a boulder in asteroid Bennu's southern hemisphere. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on March 28 from a distance of 2.1 miles (3.4 km). The field of view is 154 ft (46.8 m). For scale, the largest rock on the boulder is 9 ft (2.6 m) wide, which is about the same length as a pool table. The image was obtained during Flyby 4A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam slightly to the south.

Date Taken: March 28, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 30.04.2019 21:37:50
https://www.asteroidmission.org/20190328-southern-limb-shadows/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/20190328-Southern-Limb-Shadows.png)

Shadows on Bennu's Southern Limb

This image shows the southern limb of asteroid Bennu. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on March 28 from a distance of 2.1 miles (3.4 km). The field of view is 157 ft (48 m). For scale, the rectangular-shaped, light-colored rock in the upper right corner is 7 ft (2.1 m) long, which is about the same length as a fishing pole. The image was obtained during Flyby 4A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam toward the south pole.

Date Taken: March 28, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 01.05.2019 21:57:56
https://www.asteroidmission.org/20190328-dark-region/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/04/20190328-Dark-Region.png)

Dark Region on Bennu

This image shows a small portion of a very large outcrop in Bennu's southern hemisphere. This outcrop contains some of the darkest material on the asteroid. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on March 28 from a distance of 2.2 miles (3.5 km). The field of view is 157 ft (48 m). For scale, the squarish, light-colored rock to the left of the image's center is 6 ft (1.8 m) long, which is about the same height as a man. The image was obtained during Flyby 4A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam slightly northward.

Date Taken: March 28, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
(https://pbs.twimg.com/media/D5gHAV6UEAEOzVl.jpg) (https://twitter.com/OSIRISREx/status/1123656848542797825)
Название: OSIRIS-REx
Отправлено: tnt22 от 02.05.2019 21:47:21
https://www.asteroidmission.org/20190328-polycam-northern-view/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/05/20190328-PolyCam-Northern-View.png)

View of the North from Bennu's Southern Hemisphere

This image provides a steeply angled view of a region of asteroid Bennu's equator and northern hemisphere. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on March 28 from a distance of 2.2 miles (3.6 km). The field of view is 170 ft (52 m) wide. For scale, the largest boulder in the upper left corner of the image is 48 ft (14.5 m) wide, which is about the length of a semi-truck trailer. The image was obtained during Flyby 4A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam up toward the far north.

Date Taken: March 28, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 03.05.2019 20:46:16
https://www.asteroidmission.org/20190329-northern-sample-site-candidate/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/05/20190329-Northern-Sample-Site-Candidate.png)

Northern Candidate Sample Site on Asteroid Bennu

This image shows one of the candidate sites for sample collection on asteroid Bennu. The 71 ft (21.6 m) wide crater on Bennu's northern hemisphere appears to contain fine-grained material and is relatively free of hazards to the spacecraft. Although it is significantly smaller than the OSIRIS-REx mission's original plans for a 164 ft (50 m) wide sampling region, Bennu's high density of boulders means the team must prepare to sample a markedly smaller area. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on March 29 from a distance of 2.2 miles (3.6 km). The field of view is 165 ft (50.3 m). For scale, the light-colored rock that looks like a spear tip in the crater is 16 ft (4.8 m) long, which is about the same length as a box truck. The image was obtained during Flyby 4B of the mission's Detailed Survey: Baseball Diamond phase (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf). When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam slightly south.

Date Taken: March 29, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 6 мин. назад (https://twitter.com/OSIRISREx/status/1124368156015730690)

The team is right now combing through all of the Baseball Diamond phase images, looking for the 12 best possible sites for touchdown and sampling. In mid-July, we'll down-select to the final two -- a primary and back-up site
Название: OSIRIS-REx
Отправлено: tnt22 от 04.05.2019 21:42:55
ЦитатаOSIRIS-REx's Two Spectrometers

NASA Video (https://www.youtube.com/channel/UC_aP7p621ATY_yAa8jMqUVA)

Опубликовано: 3 мая 2019 г.

Dr. Amy Simon, the OVIRS deputy instrument scientist at NASA's Goddard Space Flight Center in Greenbelt, Maryland, goes in-depth about the different spectrometers used in the mission. The Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft launched Sept. 8, 2016, and began orbiting asteroid Bennu on Dec. 31, 2018. Its primary science objective is to study Bennu and collect a sample for return to Earth in 2023. Bennu is a carbon-rich asteroid that records the earliest history of our solar system, and which may contain the raw ingredients of life.
https://www.youtube.com/watch?v=HOWy7EY4sHshttps://www.youtube.com/watch?v=HOWy7EY4sHs (https://www.youtube.com/watch?v=HOWy7EY4sHs) (1:02)
Название: OSIRIS-REx
Отправлено: tnt22 от 07.05.2019 00:08:05
https://www.asteroidmission.org/20190329-dark-boulder/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/05/20190329-Dark-Boulder.png)

Dark Boulder near Asteroid Bennu's Equator

In the lower left of this image is one of the darkest boulders on asteroid Bennu. The boulder, located near the asteroid's equator, has an albedo of about 3.3%. Bennu's global average albedo is 4.4%, which is still about as dark as charcoal. This image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on March 29 from a distance of 2.2 miles (3.6 km). The field of view is 165 ft (50.4m) wide. For scale, the light-colored rock sitting on the dark boulder is 6.2 ft (1.9 m) wide, which is about the same height as a person. The image was obtained during Flyby 4B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam down toward the south.

Date Taken: March 29, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 07.05.2019 21:13:47
https://www.asteroidmission.org/bennu2/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/05/bennu2.gif)

Bennu Thermal Map (Derived from Approach Data)

This global map demonstrates the distribution of temperatures across the surface of asteroid Bennu. It is a model created to fit the thermal emission data collected by the OTES and OVIRS spectrometers on NASA's OSIRIS-REx spacecraft during the spacecraft's November 2018 approach toward the asteroid. The wide range of temperatures on the surface -- from 200 K to 350 K (-99.67 °F to 170.33 °F, or -73.15 °C to 76.85 °C) over a distance of 820 ft (250 m) -- is explained by the lack of an atmosphere on Bennu. On Earth, the planet's atmosphere works to distribute heat around the globe, but, for a planetary body without an atmosphere, the temperature of any given region is much more affected by the amount of direct sunlight it receives.

Date Taken: November 2018

Instrument Used: OTES; OVIRS

Credit: NASA/Goddard/University of Arizona/The Open University/University of Tennessee
Название: OSIRIS-REx
Отправлено: tnt22 от 08.05.2019 21:28:43
https://www.asteroidmission.org/20190329-benben-north/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/05/20190329-Benben-North.png)

North Side of Bennu's Boulder No. 1

his image shows a view of the north side of asteroid Bennu's largest boulder. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on March 29 from a distance of 2.2 miles (3.6 km). The field of view is 170 ft (51.7 m) wide. For scale, the height of the boulder is 71 ft (21.7 m), which is about the same height as the White House. The image was obtained during Flyby 4B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam down toward the south.

Date Taken: March 29, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 09.05.2019 21:20:20
https://www.asteroidmission.org/20190329-sorted-stones/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/05/20190329-Sorted-Stones.png)

Graduated Boulder Sizes

This image shows a rocky patch in the northern hemisphere of asteroid Bennu where the rocks and boulders are situated by size. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on March 29 from a distance of 2.1 miles (3.4 km). The field of view is 157 ft (48 m). For scale, the little rock sitting on the boulder in the lower left corner is 8 ft (2.5 m) wide, which is about the same length as a horse. The image was obtained during Flyby 4B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam slightly to the south.

Date Taken: March 29, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 10.05.2019 21:26:24
https://www.asteroidmission.org/20190329-north-pole/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/05/20190329-North-Pole.png)

Shadows on Bennu's Northern Limb

This image shows a region of asteroid Bennu's north pole. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on March 29 from a distance of 2.1 miles (3.4 km). The field of view is 158 ft (48.2 m). For scale, the brightest rock in the image, to the right of the image's center, is 4 ft (1.1 m) wide, which is about the size of a dining room table. The image was obtained during Flyby 4B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam toward the north pole.

Date Taken: March 29, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Цитата4 мин. назад (https://twitter.com/OSIRISREx/status/1126915070812770304)

(https://pbs.twimg.com/media/D6OaXgZU8AYpfJ_.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 14.05.2019 23:49:23
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 19 мин. назад (https://twitter.com/OSIRISREx/status/1128396872236687360)

This is the imaging pattern for Flyby 5A&B of Baseball Diamond phase. I'll be sharing images fr om this flyby next. For FB5-A, I was over the northern hemisphere at 40° lat., imaging west, center and east from the north pole down to the equator.

(https://pbs.twimg.com/media/D6jcwjxUUAA2_QY.png)


19 мин. назад (https://twitter.com/OSIRISREx/status/1128396875793555458)

I'm giving you a heads up now that images taken from over the asteroid's northern hemisphere while looking down appear all sorts of wonky to an Earth brain. The images are oriented so that Bennu's north is up, but feel free to flip them around to wh ere they feel more comfortable.
Название: OSIRIS-REx
Отправлено: tnt22 от 14.05.2019 23:52:26
https://www.asteroidmission.org/20190404-shark-teeth/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/05/20190404-Shark-Teeth.png)

Equatorial Boulder Region

This image shows a region near asteroid Bennu's equator that contains many large boulders. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 4 from a distance of 2.9 miles (4.6 km). The field of view is 213 ft (64.9 m). For scale, the triangular boulder on the horizon is 30 ft (9.2 m) high, which is almost as tall as the tail of a C-130 Hercules aircraft. The image was obtained during Flyby 5A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam down and west toward the equator.

Date Taken: April 4, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 15.05.2019 22:06:18
https://www.asteroidmission.org/20190404-prime-meridian-boulder/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/05/20190404-Prime-Meridian-Boulder.png)

Boulder Marking Bennu's Prime Meridian

This image shows a portion of the boulder that marks Bennu's prime meridian. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 4 from a distance of 3 miles (4.7 km). The field of view is 216 ft (65.7 m). For scale, the highest point visible on the prime meridian boulder is 65 ft (20 m) tall, which is the same height as Delicate Arch in Arches National Park in Utah. The image was obtained during Flyby 5A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam east and downward toward the southern hemisphere.

Date Taken: April 4, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
"Камешек" для сравнения:
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 34 мин. назад (https://twitter.com/OSIRISREx/status/1128728878447357953)
...
(https://pbs.twimg.com/media/D6oMmfuUcAAD9QG.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 16.05.2019 23:23:54
https://www.asteroidmission.org/20190404-anvil/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/05/20190404-Anvil.png)

Long Boulder and Shadow

This image shows the long shadow of an oddly-shaped boulder located in asteroid Bennu's northern hemisphere. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 4 from a distance of 3 miles (4.9 km). The field of view is 226 ft (69 m). For scale, the boulder is 62 ft (18.9 m) long, which is about the length of a bowling alley lane. The image was obtained during Flyby 5A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam due west.

Date Taken: April 4, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 17.05.2019 23:37:08
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 2 ч. назад (https://twitter.com/OSIRISREx/status/1129454414421323776)

It's Friday, so let's change it up. First, how about 2 images? These were taken 8 minutes apart and you can see the same dark boulder in both. Secondly, these aren't oriented north-up. I couldn't do that to you people.

https://bit.ly/2VrZAmM  (https://t.co/fL0lAn2SSF)
https://bit.ly/2EiBTYl  (https://t.co/o2kwGp8KcR)

(https://pbs.twimg.com/media/D6yeK5-V4AAFRa3.jpg)(https://pbs.twimg.com/media/D6yeLu5U8AAMMSN.jpg)


2 ч. назад (https://twitter.com/OSIRISREx/status/1129454416891850752)

This is what they look like oriented the correct way. Disturbing, right? The eagle-eyed will notice that I've shared images of these features before. (https://abs.twimg.com/emoji/v2/72x72/1f9d0.png)The crater is a candidate sample site and the boulder is one of the darkest features on the asteroid, with an albedo of 3.3%.

(https://pbs.twimg.com/media/D6ye-ooU0AAwrkU.jpg)
(https://pbs.twimg.com/media/D6yfBvwUcAA0AaX.jpg)


2 ч. назад (https://twitter.com/OSIRISREx/status/1129454420301819904)

They were taken on April 4 from about 3 miles (4.9 km) away. The jagged little light rock sitting on top of the dark boulder is 6.2 ft (1.9 m) long ... about the height of a person.
Название: OSIRIS-REx
Отправлено: tnt22 от 21.05.2019 23:27:41
https://www.asteroidmission.org/20190405-shelf/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/05/20190405-Shelf.png)

Angled Boulder on Bennu's Northern Hemisphere

This image shows a boulder jutting out from asteroid Bennu's northern hemisphere. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 5 from a distance of 1.7 miles (2.8 km). The field of view is 133 ft (40.5 m). For scale, the boulder is 47 ft (14.3 m) long, which is about the height of the Hollywood sign. The image was obtained during Flyby 5B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam north and west toward the northern hemisphere.

Date Taken: April 5, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: Алихан Исмаилов от 21.05.2019 23:40:00
Великолепный механический состав. Надо грузовой отсек кораблей на 1000т делать. Хватило бы только энергии.
Название: OSIRIS-REx
Отправлено: tnt22 от 22.05.2019 23:21:02
https://www.asteroidmission.org/20190405-equatorial-crater-rim/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/05/20190405-Equatorial-Crater-Rim.png)

Equatorial Crater Rim

This image shows the edge of a large crater located on asteroid Bennu's equator. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 5 from a distance of 1.7 miles (2.8 km). There are two candidate sample collection sites located inside this crater. The field of view for the image is 128 ft (39 m). For scale, the bright, thin rock face on the right side of the image is 8 ft (2.4 m) long, which is about the same length as a horse. The image was obtained during Flyby 5B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam north and west toward the equator.

Date Taken: April 5, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 23.05.2019 22:19:13
https://www.asteroidmission.org/20190405-crocodile/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/05/20190405-Crocodile.png)

Fractured Boulder in Bennu's Southern Hemisphere

This image shows a large fractured boulder and a smaller reflective rock located in a region of asteroid Bennu's southern hemisphere. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 5 from a distance of 1.7 miles (2.8 km). The field of view is 127 ft (38.8 m). For scale, the length of the fracture on the large boulder is 50 ft (15.1 m), which is the width of a basketball court. The image was obtained during Flyby 5B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam south and west.

Date Taken: April 5, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 25.05.2019 05:39:25
https://www.asteroidmission.org/20190405-tattoo/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/05/20190405-Tattoo.png)

Southern End of Bennu's Boulder Spine

This image shows the southern end of a long spine of boulders in Bennu's southern hemisphere. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 5 from a distance of 1.7 miles (2.8 km). The field of view is 129 ft (39.4 m). For scale, the large boulder at the bottom of the image is 34 ft (10.3 m) wide, which is about the length of two mid-sized cars. The image was obtained during Flyby 5B of the mission's Detailed Survey: Baseball Diamond phase (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf). When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam south and to the west.

Date Taken: April 5, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 30.05.2019 21:32:21
https://www.asteroidmission.org/20190405-tilted-gargoyle/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/05/20190405-Tilted-Gargoyle.png)

Angled View of Bennu's Darkest Boulder

This image shows an angled view of one of the darkest boulders on asteroid Bennu. The boulder, located near the asteroid's equator, has an albedo of 3.3%. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 5 from a distance of 1.7 miles (2.8 km). The field of view is 131 ft (40 m). For scale, the small, light-colored rock sitting on the dark boulder is 6.2 ft (1.9 m) long, which is about the height of a person. The image was obtained during Flyby 5B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam north and west.

Date Taken: April 5, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 22 ч. назад (https://twitter.com/OSIRISREx/status/1133827185406464000)

Look at the *height* on that rock circled in red. The shadows from the image on the right suggest that there is some elevation (even though it looks relatively flat), but if you really want to understand the terrain, there's no substitute for having a bunch of viewing angles.

(https://pbs.twimg.com/media/D7wnbJSUYAAD8JK.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 30.05.2019 22:03:54
https://www.asteroidmission.org/20190405-embedded-rocks/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/05/20190405-Embedded-Rocks.png)

Boulder with Embedded Rocks

This image shows a large boulder located in asteroid Bennu's northern hemisphere that has a number of lighter rocks on its southeastern face. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 5 from a distance of 1.7 miles (2.8 km). The field of view is 132 ft (40.2 m). For scale, the boulder is 68 ft (20.6 m) tall, which is about height of the tail on a 747 aircraft. The image was obtained during Flyby 5B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam north and west over the equator.

Date Taken: April 5, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 02.06.2019 17:59:24
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 13:08 PDT (https://twitter.com/OSIRISREx/status/1134552374599569408) - 31 мая 2019 г.

I love it!
Цитата(https://pbs.twimg.com/profile_images/690065679156932609/cAhA-t3D_bigger.jpg)Brian Houston‏ @BrianHoustonEng (https://twitter.com/BrianHoustonEng) 10:57 PDT (https://twitter.com/BrianHoustonEng/status/1134519317058543616) - 31 мая 2019 г.

Today a mini asteroid left our #FabLab (https://twitter.com/hashtag/FabLab?src=hash) @UniOfHull (https://twitter.com/UniOfHull)! This little beauty was printed at approx 1:1800 scale on our @Stratasys (https://twitter.com/Stratasys) #F370 (https://twitter.com/hashtag/F370?src=hash) from a phenomenally accurate 75-cm resolution model captured by the #NASA (https://twitter.com/hashtag/NASA?src=hash) @OSIRISREx (https://twitter.com/OSIRISREx) mission and provided by the @UAAHGSA (https://twitter.com/UAAHGSA).
@dbenoit1 (https://twitter.com/dbenoit1) @EAMilneCentre (https://twitter.com/EAMilneCentre)

https://video.twimg.com/ext_tw_video/1134519297630461954/pu/vid/1088x528/s2I22tF_DZABcBKg.mp4?tag=9 (https://video.twimg.com/ext_tw_video/1134519297630461954/pu/vid/1088x528/s2I22tF_DZABcBKg.mp4?tag=9) (0:05 (https://video.twimg.com/ext_tw_video/1134519297630461954/pu/vid/1088x528/s2I22tF_DZABcBKg.mp4?tag=9))
Название: OSIRIS-REx
Отправлено: tnt22 от 03.06.2019 21:37:50
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 10 мин. назад (https://twitter.com/OSIRISREx/status/1135613858347855876)

Starting today, we're into images from Flyby 6 of Detailed Survey: Baseball Diamond phase. Here's the FB6 observation plan. For FB6-A, I was over Bennu's southern hemisphere, imaging west/center/east from the 12:30 pm LST position. For FB6-B, I imaged west from over the north.

(https://pbs.twimg.com/media/D8KBHBqV4AAqwqY.png)
Название: OSIRIS-REx
Отправлено: tnt22 от 04.06.2019 01:48:55
https://www.asteroidmission.org/20190411-craters-edge/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/06/20190411-Craters-Edge.png)

Crater's Edge

This image shows the northwest edge of a large crater located in asteroid Bennu's southern hemisphere. The crater extends beyond the lower right side of the field of view. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 11, from a distance of 2.9 miles (4.6 km). The field of view is 214 ft (65.1 m). For scale, the square rock on the crater's edge is 20 ft (6.0 m) long, which is about the length of a 15 passenger van. The image was obtained during Flyby 6A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam slightly south and east.

Date Taken: April 11, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 04.06.2019 23:32:20
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 4 мин. назад (https://twitter.com/OSIRISREx/status/1136006418736111617)

Bennu isn't all spectacular boulders and craters. A lot of it looks like ... this. Lots of rocks and different types of rocks and some other rocks too. But look at that square shadow peeking into the upper right corner. Even an everyday spot has a bit of mystery.

(https://pbs.twimg.com/media/D8PjCnWUIAAonUN.jpg)


4 мин.4 минуты назад (https://twitter.com/OSIRISREx/status/1136006420850065408)

(hint: it is also a rock ... just a tall one that's slightly out of the frame.)
Название: OSIRIS-REx
Отправлено: tnt22 от 04.06.2019 23:36:54
https://www.asteroidmission.org/20190411-chaotic-rocks/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/06/20190411-Chaotic-Rocks.png)

Mixed Rock Types in Bennu's Equatorial Region

This image shows a region near asteroid Bennu's equator containing boulders and rocks of various compositions. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 11, from a distance of 2.9 miles (4.6 km). The field of view is 209 ft (63.6 m). For scale, the oddly-shaped, light-colored boulder in the upper left corner is 30 ft (9.1 m) long, which is about the length of a city bus. The image was obtained during Flyby 6A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam north and to the west.

Date Taken: April 11, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 05.06.2019 23:41:33
https://www.asteroidmission.org/20190411boulderstaircase/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/06/20190411boulderstaircase.png)

Descending Boulders and Crater

This image shows a portion of a crater and a line of large boulders located near asteroid Bennu's equator. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 11, from a distance of 3 miles (4.9 km). The field of view is 226 ft (69 m). For scale, the width of the crater is 136 ft (41.5 m), which is about the length of a 737 aircraft. The image was obtained during Flyby 6A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam north and east.

Date Taken: April 11, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: Старый от 05.06.2019 23:51:31
Вагон с углём. :)
Название: OSIRIS-REx
Отправлено: tnt22 от 07.06.2019 04:11:58
https://www.asteroidmission.org/20190411shadowboulder/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/06/20190411shadowboulder.png)

Shadowed Boulder

This image shows a shadowed view of the east side of asteroid Bennu's largest boulder. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 11, from a distance of 2.9 miles (4.6 km). The field of view is 217 ft (66.2 m). For scale, the width of the boulder is 157 ft (47.7 m), which is about the width of a football field. The image was obtained during Flyby 6A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam south and west.

Date Taken: April 11, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: Старый от 07.06.2019 16:21:48
Это вобще чего? Это он садится или просто снимает с низкой орбиты?
Название: OSIRIS-REx
Отправлено: tnt22 от 07.06.2019 19:15:12
ЦитатаСтарый пишет:
Это вобще чего? Это он садится или просто снимает с низкой орбиты?
Эт игра теней от больших камней... при съёмке с расстояния ~4.6 км, аппарат находился над южным полушарием астероида, камера в момент съёмки смотрела на юго-запад.
Название: OSIRIS-REx
Отправлено: tnt22 от 08.06.2019 00:25:02
https://www.asteroidmission.org/20190411-ringed-rocks/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/06/20190411-Ringed-Rocks.png)

Ring of Rocks on Bennu's Boulder Spine

This image shows a partial ring of smaller boulders located in the midst of the long spine of boulders running down asteroid Bennu's southern hemisphere. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 11, from a distance of 2.9 miles (4.7 km). The field of view is 217 ft (66.2 m). For scale, the long, thin rock located in the center of the upper part of the image is 23 ft (7.0 m) long, which is the length of a dump truck. The image was obtained during Flyby 6A of the mission's Detailed Survey: Baseball Diamond phase (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf). When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam south and west.

Date Taken: April 11, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 11.06.2019 00:06:10
https://www.asteroidmission.org/20190411craterbehindgargoyle/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/06/20190411craterbehindgargoyle.png)

Bennu's Darkest Boulder Adjacent to Crater

This image shows the darkest boulder on asteroid Bennu along with a crater, which are both located near the asteroid's equator. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 11, from a distance of 3 miles (4.9 km). The field of view is 225 ft (68.6 m). For scale, small, light-colored rock sitting on the dark boulder is 6 ft (1.9 m) long, which is about the height of a person. The image was obtained during Flyby 6A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam north and east.

Date Taken: April 11, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 11.06.2019 22:11:43
https://www.asteroidmission.org/20190411benbenwest/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/06/20190411benbenwest.png)

West View of Bennu's Largest Boulder

This image shows the west side of asteroid Bennu's largest boulder, which is located in the asteroid's southern hemisphere. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 11, from a distance of 3 miles (4.7 km). The field of view is 224 ft (68.3 m). For scale, the triangular striped rock near the center of the image is 30 ft (9.2 m), which is about the length of a school bus. The image was obtained during Flyby 6A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam south and east.

Date Taken: April 11, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 13.06.2019 18:50:38
https://www.asteroidmission.org/?latest-news=nasas-osiris-rex-mission-breaks-another-orbit-record
Цитата
NASA's OSIRIS-REx Mission Breaks Another Orbit Record

June 13, 2019 - On June 12, NASA's OSIRIS-REx spacecraft performed another significant navigation maneuver--breaking its own world record for the closest orbit of a planetary body by a spacecraft.

(https://www.asteroidmission.org/wp-content/uploads/2019/06/Orbital-B-Beauty-Shot.png) (https://www.asteroidmission.org/orbital-b-beauty-shot/)
On Jun. 12, 2019, NASA's OSIRIS-REx spacecraft went into orbit around asteroid Bennu for a second time -- breaking its own record for the closest orbit of a planetary body by any spacecraft.

The maneuver began the mission's new phase, known as Orbital B, and placed the spacecraft in an orbit 680 meters (2,231 feet) above the surface of asteroid Bennu. The previous record--also set by the OSIRIS-REx spacecraft--was approximately 1.3 kilometers (0.8 miles) above the surface.

Upon arrival at Bennu, the team observed particles ejecting into space from the asteroid's surface. To better understand why this is occurring, the first two weeks of Orbital B will be devoted to observing these events by taking frequent images of the asteroid's horizon. For the remaining five weeks, the spacecraft will map the entire asteroid using most of its onboard science instruments: the OSIRIS-REx Laser Altimeter (OLA) will produce a full terrain map; PolyCam will form a high-resolution, global image mosaic; and the OSIRIS-REx Thermal Emission Spectrometer (OTES) and the REgolith X-ray Imaging Spectrometer (REXIS) will produce global maps in the infrared and X-ray bands. All of these measurements are essential for selecting the best sample collection site on Bennu's surface.

OSIRIS-REx will remain in Orbital B until the second week of August, when it will transition to the slightly higher Orbital C for additional particle observations. During Orbital C, the spacecraft will be approximately 1.3 kilometers (0.8 miles) above the asteroid's surface.

The OSIRIS-REx team will also use data collected from Orbital B phase to assess the safety and sample-ability (the likelihood that a sample can be collected) of each potential sample collection site. The team will then choose four possible sample sites to be thoroughly evaluated this fall during the Reconnaissance phase of the mission. Data from the Reconnaissance phase will be used to evaluate the candidate sites for further down-selection, as well as provide the closeup imaging required to map the features and landmarks necessary for the spacecraft's autonomous navigation to the asteroid's surface.

(https://www.asteroidmission.org/wp-content/uploads/2019/06/Orbital-AB-Comparison-1.png) (https://www.asteroidmission.org/orbital-ab-comparison-2/)
On June 12, 2019, NASA's OSIRIS-REx spacecraft entered its second orbital phase around asteroid Bennu, called Orbital B, and broke its own world record for the closest orbit of a planetary body. The spacecraft moved into a circular orbit 0.4 miles (680 meters) above Bennu's surface. The previous record was set by OSIRIS-REx on Dec. 31, 2018, when the spacecraft flew 0.8 miles (1.33 km) above the asteroid's surface during Orbital A phase.

Several safety requirements must be considered before sample collection. For instance, any candidate site must be clear enough of large rocks or boulders so that the spacecraft can navigate to the surface without encountering dangerous terrain. Additionally, to keep OSIRIS-REx upright during sample collection, the chosen site can't be tilted too much compared to the sampling arm. Bennu's unexpectedly rocky surface has made it more challenging than originally predicted to identify sites that meet both of these safety requirements. In response, the team is evaluating both spacecraft and navigation performance capabilities, which will likely enable greater precision guidance to target more confined sites.
The OSIRIS-REx spacecraft is on a seven-year journey to study the asteroid Bennu and return a sample from its surface to Earth. This sample of a primitive asteroid will help scientists understand the formation of the Solar System over 4.5 billion years ago. Sample collection is scheduled for summer of 2020, and the spacecraft will deliver the sample to Earth in September 2023.

NASA Goddard provides overall mission management, systems engineering, and safety and mission assurance for OSIRIS-REx. Dante Lauretta of the University of Arizona, Tucson, is the principal investigator, and the University of Arizona leads the science team and the mission's science observation planning and data processing. Lockheed Martin Space in Denver built the spacecraft and is providing flight operations. Goddard and KinetX Aerospace are responsible for navigating the OSIRIS-REx spacecraft. OSIRIS-REx is the third mission in NASA's New Frontiers Program, which is managed by NASA's Marshall Space Flight Center in Huntsville, Alabama, for the agency's Science Mission Directorate in Washington.
Название: OSIRIS-REx
Отправлено: tnt22 от 13.06.2019 21:35:14
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 1 ч. назад (https://twitter.com/OSIRISREx/status/1139224256565219328)

"So, OSIRIS-REx," you may ask, "can you show me how your current altitude over Bennu relates to the altitudes of other familiar objects over ground level?" #ORExNav (https://twitter.com/hashtag/ORExNav?src=hash)

(https://pbs.twimg.com/media/D89ViUTUwAAXt_G.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 14.06.2019 00:18:25
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 16 мин. назад (https://twitter.com/OSIRISREx/status/1139276727195017216)

I'm only 3,051 ft (930 meters) away from Bennu's center of mass. The view just keeps getting better. Also, gonna leave this right here:

(https://pbs.twimg.com/media/D8-DaOqUcAASMvx.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 17.06.2019 22:14:59
https://www.asteroidmission.org/20190613-orbital-b-insertion/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/06/20190613-Orbital-B-Insertion.png)

Bennu after Orbital B Insertion

This image of asteroid Bennu was captured on Jun. 13, 2019, shortly after NASA's OSIRIS-REx spacecraft executed its second orbital insertion maneuver. From the spacecraft's vantage point in orbit, half of Bennu is sunlit and half is in shadow. Bennu's largest boulder can also be seen protruding from the southern hemisphere. The image was taken from a distance of 0.4 miles (690 m) above the asteroid's surface by NavCam 1, one of three navigation cameras that comprise the spacecraft's TAGCAMS (the Touch-and-Go Camera System) suite. At this distance, details as small as 1.6 ft (0.5 m) across can be resolved in the center of the image.

This second orbital phase, called Orbital B, broke the record for the closest distance a spacecraft has orbited a body in the Solar System. The spacecraft is now in a bound, circular orbit 0.4 miles (680 m) from the asteroid's surface.

TAGCAMS was designed, built and tested by Malin Space Science Systems; Lockheed Martin integrated TAGCAMS to the OSIRIS-REx spacecraft and operates TAGCAMS.

Date Taken: June 13, 2019

Instrument Used: TAGCAMS (NavCam 1)

Credit: NASA/Goddard/University of Arizona/Lockheed Martin
Название: OSIRIS-REx
Отправлено: tnt22 от 17.06.2019 22:19:24
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 18 мин. назад (https://twitter.com/OSIRISREx/status/1140695018245480449)

For more technical details on the new orbit, check out this week's Mission Status Update:

https://bit.ly/2Xk0BCr  (https://t.co/eqqOpM0YM6)

(https://pbs.twimg.com/media/D9SPsZYU8AADK18.jpg)
https://www.asteroidmission.org/?mission_update=jun-17-2019
ЦитатаJun 17, 2019

OSIRIS-REx has successfully completed its Detailed Survey phase and transitioned into a new record-setting orbit around Bennu!

Last week the OSIRIS-REx navigation team performed three maneuvers using the spacecraft's attitude control thrusters to place the spacecraft into orbit around Bennu for the second time. The first two maneuvers, on June 8 and 10, were staging burns that moved the spacecraft into position for the third burn on June 12, which ultimately placed OSIRIS-REx into orbit. These maneuvers imparted a velocity change (delta-v) of 8, 6, and 7 cm/sec, respectively. Throughout the Orbital B phase, slow changes in the spacecraft's orbit will require correction maneuvers approximately every three weeks. The spacecraft's circular orbit period around Bennu is 22 hours, with a velocity of 7 centimeters per second, which allows for the mission's science measurements to be observed from a uniform altitude.

June 12 marked the beginning of the mission's Orbital B phase (https://www.asteroidmission.org/?page_id=18095), and the spacecraft began its new orbit approximately 680 meters above Bennu's surface. This orbit breaks the record that OSIRIS-REx set during its Orbital A phase for the closest a spacecraft has ever orbited a small planetary body, which was as close as 1.3 km above the asteroid's surface. The first two weeks of Orbital B will focus on investigating the causes of Bennu's particle ejection events (https://www.asteroidmission.org/?latest-news=nasa-mission-reveals-asteroid-big-surprises) by taking frequent images of the asteroid's horizon. The remaining five weeks of Orbital B will focus on mapping the asteroid from a close range.

With the conclusion of the Detailed Survey: Equatorial Stations phase (https://www.asteroidmission.org/wp-content/uploads/2019/03/Equatorial-Stations-Poster-8.pdf) on June 7, the team completed the mission's main global survey effort. Here are the highlights from both Detailed Survey: Baseball Diamond and Detailed Survey: Equatorial Stations phases (Feb 22 - Jun 7):
    [/li]
  • 14 Flyovers
  • 18 Observation Stations
  • 2,616 NavCam Images
  • 19,660 OCAMS Images
  • 2,286 OTES Data Acquisitions
  • 179 OVIRS Science Acquisitions
  • 19 OLA Scans
  • 333,591 Total Spacecraft and Payload Commands
Название: OSIRIS-REx
Отправлено: tnt22 от 18.06.2019 22:29:56
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 20 мин. назад (https://twitter.com/OSIRISREx/status/1141060230714761217)

Starting today I'll be sharing images from Flyby 6B! Because the spacecraft captured these images from a northern vantage point looking down at Bennu the shadows come from below. So, the images from this phase will be posted upside down. They're more pleasant to look at. Trust me

(https://pbs.twimg.com/media/D9XYwtlU8AA1lnJ.png)
Название: OSIRIS-REx
Отправлено: tnt22 от 18.06.2019 22:32:02
https://www.asteroidmission.org/20190412-equatorial-ridgeline-boulders/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/06/20190412-Equatorial-Ridgeline-Boulders.png)

Boulders on Bennu's Equatorial Ridge

This image shows several large boulders positioned on asteroid Bennu's equatorial ridge. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 12, from a distance of 1.7 miles (2.8 km). The field of view is 132 ft (40.3 m). For scale, the largest boulder on the horizon is over 17 ft (40.3 m) tall, which is about the height of a two-story house. The image was obtained during Flyby 6B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam south and to the west.

Date Taken: April 12, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 19.06.2019 22:15:34
https://www.asteroidmission.org/20190412-northern-crater/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/06/20190412-Northern-Crater.png)

Northern Crater

This image shows a small crater and a few boulders in a region near asteroid Bennu's north pole. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 12, from a distance of 1.7 miles (2.8 km). The field of view is 130 ft (39.6 m). For scale, the crater is 50 ft (15.3 m) wide, which is the width of a basketball court. The image was obtained during Flyby 6B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam farther north and to the west.

Date Taken: April 12, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 20.06.2019 22:00:56
https://www.asteroidmission.org/20190412gradient/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/06/20190412gradient.png)

Rocky Region Near Bennu's Equator

This image shows a rocky, boulder-filled region located just north of asteroid Bennu's equator. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 12, from a distance of 2.8 miles (4.5 km). The field of view is 130 ft (39.5 m). For scale, the long, slender boulder in the right of the image is 34 ft (10.3 m) long, which is about the length of a city bus. The image was obtained during Flyby 6B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam south and to the west.

Date Taken: April 12, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 11 мин. назад (https://twitter.com/OSIRISREx/status/1141780039907700736)

P.S. image is oriented Bennu south up.
Название: OSIRIS-REx
Отправлено: tnt22 от 21.06.2019 21:20:20
https://www.asteroidmission.org/20190412-northern-long-shadows/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/06/20190412-Northern-Long-Shadows.png)

Long Shadows in the North

This image shows the long shadows of Bennu's far northern region. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 12, from a distance of 1.7 miles (2.8 km). The field of view is 132 ft (40.2 m). For scale, the small rock sitting in the middle of the larger boulder on the right is 5.6 ft (1.7 m) long, which is the size of a person. The image was obtained during Flyby 6B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam far north and west.

Date Taken: April 12, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
https://twitter.com/OSIRISREx/status/1142132656156499968
Цитатаthis image is oriented Bennu south up
Название: OSIRIS-REx
Отправлено: tnt22 от 25.06.2019 07:19:24
https://www.asteroidmission.org/20190412flow/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/06/20190412flow.png)

Boulders in Bennu's North

This image shows a flow of boulders and rocks located in asteroid Bennu's northern hemisphere. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 12, from a distance of 1.7 miles (2.8 km). The field of view is 130 ft (39.5 m). For scale, the small, shiny rock in the lower right of the image is 5 ft (1.5 m) wide, which is the length of a bicycle. The image was obtained during Flyby 6B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam north and west.

Date Taken: April 12, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 26.06.2019 23:03:42
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 3 ч. назад (https://twitter.com/OSIRISREx/status/1143928955960905728)

Starting today I'll be sharing images from Flyby 7A, which is the second flyby to use MapCam. MapCam is a wide-angle imager, resulting in panoramic views of Bennu. These images provide context for Bennu's topography, and you can see craters better!

(https://pbs.twimg.com/media/D-ANRkSU8AAcnrw.png)


3 ч. назад (https://twitter.com/OSIRISREx/status/1143929334937243648)

Flyby 7A is also a northern flyby, so I'll be sure to tell you when the images are oriented Bennu south up.
Название: OSIRIS-REx
Отправлено: tnt22 от 26.06.2019 23:20:53
https://www.asteroidmission.org/20190418-dark-boulder-and-craters/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/06/20190418-Dark-Boulder-and-Craters.png)

Dark Boulder and Craters in Bennu's North

his image shows a region of Bennu's northern hemisphere. The frame spans from near the asteroid's north pole (left), down toward its equatorial bulge (right). Visible in the image are Bennu's darkest boulder (lower right) and two craters that may contain sampleable material (upper left and lower middle). The image was taken by the MapCam camera on NASA's OSIRIS-REx spacecraft on April 18, from a distance of 2.3 miles (3.7 km). The field of view is 739 ft (225.2 m). For scale, the southern crater is 68 ft (20.6 m) wide, which is about the width of eight parking spaces. The image was obtained during Flyby 7A of the mission's Detailed Survey: Baseball Diamond phase (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf). When the image was taken, the spacecraft was over the northern hemisphere, pointing MapCam south and to the east.

Date Taken: April 18, 2019

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 28.06.2019 22:01:18
https://www.asteroidmission.org/20190418heartrock/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/06/20190418heartrock.png)

View of Bennu's North and Equator

This image gives a partial view of Bennu's northern hemisphere and equatorial region. The image was taken by the MapCam camera on NASA's OSIRIS-REx spacecraft on April 18, from a distance of 2.2 miles (3.5 km). The field of view is 818 ft (249.2 m). For scale, the small rock situated on the large, flat boulder near the center of the image is 8 ft (2.5 m) wide, which is about the same length as a horse. The image was obtained during Flyby 7A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing MapCam south and to the west.

Date Taken: April 18, 2019

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
https://twitter.com/OSIRISREx/status/1144677636381134849
Цитатаimage is oriented Bennu south up
Название: OSIRIS-REx
Отправлено: tnt22 от 02.07.2019 02:40:59
https://www.asteroidmission.org/20190418-northern-craters/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/07/20190418-Northern-Craters.png)

Northern Craters

This image shows a region near asteroid Bennu's north pole. Two craters that may contain sampleable material (center and center right) are visible. The image was taken by the MapCam camera on NASA's OSIRIS-REx spacecraft on April 18, from a distance of 2 miles (3.6 km). The field of view is 830 ft (253 m). For scale, the central crater is 56 ft (17 m) across, which is about the length of a boxcar. The image was obtained during Flyby 7A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing MapCam north and slightly east.

Date Taken: April 18, 2019

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 03.07.2019 00:02:22
https://www.asteroidmission.org/20190418boulderpit/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/07/20190418boulderpit.png)

Boulder Cluster and Crater in Northern Hemisphere

This image shows a partial view of asteroid Bennu's northern hemisphere and equatorial region. Visible in the center right of the image is a crater that may contain sampleable material. The image was taken by the MapCam camera on NASA's OSIRIS-REx spacecraft on April 18, from a distance of 2.1 miles (3.4 km). The field of view is 787 ft (240 m). For scale, the pointed rock sitting on the boulder near the center of the image is 24 ft (7.3 m) long, which is about the length of a dump truck. The image was obtained during Flyby 7A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing MapCam slightly north.

Date Taken: April 18, 2019

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 03.07.2019 23:09:07
https://www.asteroidmission.org/20190418dl06gargoyle/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/07/20190418DL06gargoyle.png)

Crater and Bennu's Darkest Boulder

This image shows a region in asteroid Bennu's northern hemisphere. The frame spans from near the north pole down to the equator. Visible in the image are Bennu's darkest boulder (lower left near the horizon) and a crater containing a large, light-colored boulder, which also may contain sampleable material (adjacent to the darkest boulder). The image was taken by the MapCam camera on NASA's OSIRIS-REx spacecraft on April 18, from a distance of 2.3 miles (3.7 km). The field of view is 854 ft (260.3 m). For scale, the southern crater is 68 ft (20.6 m) wide, which is about the width of eight parking spaces. The image was obtained during Flyby 7A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing MapCam south and to the west.

Date Taken: April 18, 2019

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 08.07.2019 22:47:00
https://www.asteroidmission.org/20190419benbenandcrocodile/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/07/20190419BenBenandCrocodile.png)

Overhead View of Bennu's Largest Boulder

This image provides an overhead view of Bennu's largest boulder, Boulder No. 1. The image was taken by the MapCam camera on NASA's OSIRIS-REx spacecraft on April 19, from a distance of 2.2 miles (3.6 km). For scale, the largest boulder is 190 ft (58 m) wide, which is about the width of a soccer field. The image was obtained during Flyby 7B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing MapCam south.

Date Taken: April 19, 2019

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 10.07.2019 21:57:40
https://www.asteroidmission.org/20190419southerncraterandprimemeridianboulder/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/07/20190419southerncraterandprimemeridianboulder.png)

Prime Meridian Boulder and Crater in Bennu's South

This image shows a portion of Bennu's southern hemisphere. Visible in the image are Bennu's prime meridian boulder (right) and a crater that may contain sampleable material (center). The image was taken by the MapCam camera on NASA's OSIRIS-REx spacecraft on April 19, from a distance of 2.2 miles (3.5 km). The field of view is 814 ft (248 m). For scale, the square rock on the crater's upper left edge is 20 ft (6.0 m) long, which is about the length of a 15-passenger van. The image was obtained during Flyby 7B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing MapCam south and to the east.

Date Taken: April 19, 2019

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 10.07.2019 21:59:51
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 54 мин. назад (https://twitter.com/OSIRISREx/status/1149016189810688001)

Um. Whoa. This crater appears pretty flat in the first image. But looking at the second image = speechless.

Image Details:
https://bit.ly/2xH4z9W  (https://t.co/L7xmRYWm3e)
https://bit.ly/2xFDK5N  (https://t.co/YlwI81homo)

(https://pbs.twimg.com/media/D_Ifvw0WwAgHgj0.jpg)
(https://pbs.twimg.com/media/D_Ifw4nXoAYM4br.jpg)


54 мин. назад (https://twitter.com/OSIRISREx/status/1149016193002549257)

These two images of Bennu's southern hemisphere and equatorial region were taken 17 minutes apart. They were taken on April 19 from 2.3 miles (3.7 km) away. The crater's diameter (top to bottom) is 135 ft (41 m), which is about the same size as the diameter of the Pantheon's dome
Название: OSIRIS-REx
Отправлено: tnt22 от 11.07.2019 22:04:42
https://www.asteroidmission.org/20190419benbengargoylecrater/
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/07/20190419BenBenGargoyleCrater.png)

Bennu's Most Recognizable Features

This image captures some of asteroid Bennu's most recognizable features. Located in the southern hemisphere, Bennu's largest boulder--Boulder No. 1--is visible in the lower right of the image. Bennu's darkest boulder, which is near the equator, can be seen in the upper left sitting on the horizon. A crater that may contain sampleable material is also visible in the top center. The image was taken by the MapCam camera on NASA's OSIRIS-REx spacecraft on April 19, from a distance of 2.2 miles (3.6 km). The field of view is 831 ft (253.3 m). For scale, Bennu's darkest boulder is 41 ft (12.6 m) high, which is about the height of a telephone pole. The image was obtained during Flyby 7B of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing MapCam north and to the west.

Date Taken: April 19, 2019

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 16.07.2019 21:36:36
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg)NASA's OSIRIS-REx‏Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 4 мин.4 минуты назад (https://twitter.com/OSIRISREx/status/1151197194206113792)
By request! Here's a different perspective of that crater within a crater in Bennu's south. It was taken while in a terminator orbit... you can see the line of dawn on the left. The shadows here provide a good sense of the larger crater's depth and size.

https://bit.ly/2JDc6Mc  (https://t.co/k1kcdfqxBx)

(https://pbs.twimg.com/media/D_nfveaU4AA6X7e.jpg)


4 мин. назад (https://twitter.com/OSIRISREx/status/1151197197729316864)
The image was taken by MapCam on Feb. 24, from a distance of 0.9 miles (1.4 km). The light-colored boulder on the crater's left edge is 20 ft (6.0 m) long... about the length of a 15-passenger van.

Название: OSIRIS-REx
Отправлено: tnt22 от 09.08.2019 06:43:50
https://www.asteroidmission.org/?latest-news=asteroid-bennus-features-named-mythical-birds (https://www.asteroidmission.org/?latest-news=asteroid-bennus-features-named-mythical-birds)
ЦитатаASTEROID BENNU'S FEATURES TO BE NAMED AFTER MYTHICAL BIRDS

August 8, 2019 - Working with NASA's OSIRIS-REx team, the International Astronomical Union's Working Group for Planetary System Nomenclature (WGPSN) approved the theme "birds and bird-like creatures in mythology" for naming surface features on asteroid (101955) Bennu.

(https://www.asteroidmission.org/wp-content/uploads/2019/08/20190411-Bennu-Bird-Rock-150x150.png) (https://www.asteroidmission.org/?attachment_id=19040#main)
This image shows boulder formations on asteroid Bennu's surface. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on April 11, 2019 from a distance of 2.8 miles (4.5 km). Credit: NASA/Goddard/University of Arizona

OSIRIS-REx is NASA's first mission to bring a sample from an asteroid back to Earth. The OSIRIS-REx spacecraft has been mapping Bennu's surface since its arrival on December 3rd, 2018, looking for a site from which to take a sample. Bennu is the smallest body in the Solar System to be orbited and surveyed by a spacecraft at close range.

The named features on Bennu will include several terrain classification types that the IAU also approved for asteroid (162173) Ryugu's surface features (currently being explored by the Japanese Space Agency's Hayabusa2 spacecraft). These include craters, dorsa (peaks or ridges), fossae (grooves or trenches) and saxa (rocks and boulders). The last of these types - saxum - is a new feature classification that the IAU introduced earlier this year for small, rocky asteroids like Ryugu and Bennu. These surface features on Bennu will be named after mythological birds and bird-like creatures, complementing the mission's existing naming theme, which is rooted in Egyptian mythology.

The name OSIRIS-REx is an acronym for the mission's major concepts and goals, which stands for Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer. The name also finds inspiration in the Egyptian myth of the god Osiris. In ancient Egyptian mythology, Osiris is associated with the afterlife, the underworld and rebirth. He granted all life, including sprouting vegetation and the fertile flooding of the Nile River. Similarly, the OSIRIS-REx mission seeks to understand the origin and process of life on Earth by studying Bennu's carbon-rich regolith.

Bennu was named in 2013 by a 9-year-old boy from North Carolina who won the Name that Asteroid! Competition, a collaboration between the mission, the Planetary Society, and the LINEAR asteroid survey that discovered Bennu. Michael Puzio won the contest by suggesting that the spacecraft's Touch-and-Go Sample Mechanism (TAGSAM) arm and solar panels resemble the neck and wings in illustrations of Bennu, whom ancient Egyptians usually depicted as a gray heron. Bennu is the ancient Egyptian deity linked with the Sun, creation and rebirth -- Puzio also noted that Bennu is the living symbol of Osiris. The myth of Bennu suits the asteroid itself, given that it is a primitive object that dates back to the creation of the Solar System. Themes of origins, rebirth and duality are all part of this asteroid's story. Birds and bird-like creatures are also symbolic of rebirth, creation and origins in various ancient myths.

The process of naming of Bennu's surface and features will begin this summer. The OSIRIS-REx team is scheduled to begin detailed reconnaissance on candidate sample sites this fall. Sample collection is scheduled for summer 2020, and the sample will return to Earth in September 2023.

NASA's Goddard Space Flight Center in Greenbelt, Maryland provides overall mission management, systems engineering, and the safety and mission assurance for OSIRIS-REx. Dante Lauretta of the University of Arizona, Tucson, is the principal investigator, and the University of Arizona also leads the science team and the mission's science observation planning and data processing. Lockheed Martin Space in Denver built the spacecraft and is providing flight operations. Goddard and KinetX Aerospace are responsible for navigating the OSIRIS-REx spacecraft. OSIRIS-REx is the third mission in NASA's New Frontiers Program, which is managed by NASA's Marshall Space Flight Center in Huntsville, Alabama, for the agency's Science Mission Directorate in Washington.
Название: OSIRIS-REx
Отправлено: tnt22 от 09.08.2019 06:47:18
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx‏ Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 11 ч. назад (https://twitter.com/OSIRISREx/status/1159499879359508480)
Asteroid Bennu itself is named after the ancient Egyptian deity Bennu, who was usually depicted as a grey heron.

(https://pbs.twimg.com/media/EBde_kkU0AAjO7M.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 12.08.2019 22:49:58
https://www.asteroidmission.org/?latest-news=nasa-mission-selects-final-four-site-candidates-asteroid-sample-return (https://www.asteroidmission.org/?latest-news=nasa-mission-selects-final-four-site-candidates-asteroid-sample-return)
ЦитатаNASA MISSION SELECTS FINAL FOUR SITE CANDIDATES FOR ASTEROID SAMPLE RETURN

August 12, 2019 - After months grappling with the rugged reality of asteroid Bennu's surface, the team leading NASA's first asteroid sample return mission has selected four potential sites for the Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft to "tag" its cosmic dance partner.

Since its arrival in December 2018, the OSIRIS-REx spacecraft has mapped the entire asteroid in order to identify the safest and most accessible spots for the spacecraft to collect a sample. These four sites now will be studied in further detail in order to sel ect the final two sites - a primary and backup - in December.

(https://www.asteroidmission.org/wp-content/uploads/2019/08/4744_Bennu_Hires.gif)
The final four candidate sample collection sites on asteroid Bennu are designated Nightingale, Kingfisher, Osprey and Sandpiper. The final site will be selected in December 2019. Credit: NASA/Goddard/University of Arizona/CSA/York/MDA

The team originally had planned to choose the final two sites by this point in the mission. Initial analysis of Earth-based observations suggested the asteroid's surface likely contains large "ponds" of fine-grain material. The spacecraft's earliest images, however, revealed Bennu has an especially rocky terrain. Since then, the asteroid's boulder-filled topography has created a challenge for the team to identify safe areas containing sampleable material, which must be fine enough - less than 1 inch (2.5 cm) in diameter - for the spacecraft's sampling mechanism to ingest it.

"We knew that Bennu would surprise us, so we came prepared for whatever we might find," said Dante Lauretta, OSIRIS-REx principal investigator at the University of Arizona, Tucson. "As with any mission of exploration, dealing with the unknown requires flexibility, resources and ingenuity. The OSIRIS-REx team has demonstrated these essential traits for overcoming the unexpected throughout the Bennu encounter."

The original mission schedule intentionally included more than 300 days of extra time during asteroid operations to address such unexpected challenges. In a demonstration of its flexibility and ingenuity in response to Bennu's surprises, the mission team is adapting its site selection process. Instead of down-selecting to the final two sites this summer, the mission will spend an additional four months studying the four candidate sites in detail, with a particular focus on identifying regions of fine-grain, sampleable material from upcoming, high-resolution observations of each site. The boulder maps that citizen science counters helped create through observations earlier this year were used as one of many pieces of data considered when assessing each site's safety. The data collected will be key to selecting the final two sites best suited for sample collection.

In order to further adapt to Bennu's ruggedness, the OSIRIS-REx team has made other adjustments to its sample site identification process. The original mission plan envisioned a sample site with a radius of 82 feet (25 m). Boulder-free sites of that size don't exist on Bennu, so the team has instead identified sites ranging from 16 to 33 feet (5 to 10 m) in radius. In order for the spacecraft to accurately target a smaller site, the team reassessed the spacecraft's operational capabilities to maximize its performance. The mission also has tightened its navigation requirements to guide the spacecraft to the asteroid's surface, and developed a new sampling technique called "Bullseye TAG," which uses images of the asteroid surface to navigate the spacecraft all the way to the actual surface with high accuracy. The mission's performance so far has demonstrated the new standards are within its capabilities.

"Although OSIRIS-REx was designed to collect a sample from an asteroid with a beach-like area, the extraordinary in-flight performance to date demonstrates that we will be able to meet the challenge that the rugged surface of Bennu presents," said Rich Burns, OSIRIS-REx project manager at NASA's Goddard Space Flight Center in Greenbelt, Maryland. "That extraordinary performance encompasses not only the spacecraft and instruments, but also the team who continues to meet every challenge that Bennu throws at us."

The four candidate sample sites on Bennu are designated Nightingale, Kingfisher, Osprey, and Sandpiper - all birds native to Egypt. The naming theme complements the mission's two other naming conventions - Egyptian deities (the asteroid and spacecraft) and mythological birds (surface features on Bennu).

(https://www.asteroidmission.org/wp-content/uploads/2019/08/FinalFourSitesTile-768x768.png)
The final four candidate sample collection sites on asteroid Bennu are designated Nightingale, Kingfisher, Osprey and Sandpiper. Each circle has a 16.4 ft (5 m) radius. Credit: NASA/Goddard/University of Arizona

The four sites are diverse in both geographic location and geological features. While the amount of sampleable material in each site has yet to be determined, all four sites have been evaluated thoroughly to ensure the spacecraft's safety as it descends to, touches and collects a sample from the asteroid's surface.

Nightingale (https://www.asteroidmission.org/candidate-sample-sites/nightingale/) is the northern-most site, situated at 56 degrees north latitude on Bennu. There are multiple possible sampling regions in this site, which is set in a small crater encompassed by a larger crater 459 feet (140 m) in diameter. The site contains mostly fine-grain, dark material and has the lowest albedo, or reflection, and surface temperature of the four sites.

Kingfisher (https://www.asteroidmission.org/candidate-sample-sites/kingfisher/) is located in a small crater near Bennu's equator at 11 degrees north latitude. The crater has a diameter of 26 feet (8 m) and is surrounded by boulders, although the site itself is free of large rocks. Among the four sites, Kingfisher has the strongest spectral signature for hydrated minerals.

Osprey (https://www.asteroidmission.org/candidate-sample-sites/osprey/) is set in a small crater, 66 feet (20 m) in diameter, which is also located in Bennu's equatorial region at 11 degrees north latitude. There are several possible sampling regions within the site. The diversity of rock types in the surrounding area suggests that the regolith within Osprey may also be diverse. Osprey has the strongest spectral signature of carbon-rich material among the four sites.

Sandpiper (https://www.asteroidmission.org/candidate-sample-sites/sandpiper/) is located in Bennu's southern hemisphere, at 47 degrees south latitude. The site is in a relatively flat area on the wall of a large crater 207 ft (63 m) in diameter. Hydrated minerals are also present, which indicates that Sandpiper may contain unmodified water-rich material.

This fall, OSIRIS-REx will begin detailed analyses of the four candidate sites during the mission's reconnaissance phase. During the first stage of this phase, the spacecraft will execute high passes over each of the four sites from a distance of 0.8 miles (1.29 km) to confirm they are safe and contain sampleable material. Closeup imaging also will map the features and landmarks required for the spacecraft's autonomous navigation to the asteroid's surface. The team will use the data fr om these passes to select the final primary and backup sample collection sites in December.

(https://www.asteroidmission.org/wp-content/uploads/2019/08/Sample-Site-Map-Final-Four-dark-768x309.png)
The final four candidate sample collection sites shown on a map of asteroid Bennu. They are designated Nightingale, Kingfisher, Osprey and Sandpiper. Credit: NASA/Goddard/University of Arizona

The second and third stages of reconnaissance will begin in early 2020 when the spacecraft will perform passes over the final two sites at lower altitudes and take even higher resolution observations of the surface to identify features, such as groupings of rocks that will be used to navigate to the surface for sample collection. OSIRIS-REx sample collection is scheduled for the latter half of 2020, and the spacecraft will return the asteroid samples to Earth on Sept. 24, 2023.

Goddard provides overall mission management, systems engineering, and safety and mission assurance for OSIRIS-REx. Dante Lauretta of the University of Arizona, Tucson, is the principal investigator, and the University of Arizona leads the science team and the mission's science observation planning and data processing. Lockheed Martin Space in Denver built the spacecraft and is providing flight operations. Goddard and KinetX Aerospace are responsible for navigating the spacecraft. OSIRIS-REx is the third mission in NASA's New Frontiers Program, which is managed by NASA's Marshall Space Flight Center in Huntsville, Alabama, for the agency's Science Mission Directorate in Washington.

To explore the final four candidate sites in detail, click here (https://www.asteroidmission.org/candidate-sample-sites).
Название: OSIRIS-REx
Отправлено: tnt22 от 12.08.2019 23:18:25
ЦитатаAsteroid Bennu Sample Site Finalists

(https://yt3.ggpht.com/a/AGF-l7_S3158Iax5KOPYENKVzQeedsuzhGLm0TKuhQ=s88-c-k-c0xffffffff-no-rj-mo) (https://www.youtube.com/user/NASAexplorer) NASA Goddard (https://www.youtube.com/channel/UCAY-SMFNfynqz1bdoaV8BeQ)

Опубликовано: 12 авг. 2019 г.
https://www.youtube.com/watch?v=M9NrzyTKaCE (https://www.youtube.com/watch?v=M9NrzyTKaCE)https://www.youtube.com/watch?v=M9NrzyTKaCE (https://www.youtube.com/watch?v=M9NrzyTKaCE) (0:22)
Название: OSIRIS-REx
Отправлено: tnt22 от 12.08.2019 23:39:58
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx‏ Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 7 мин. назад (https://twitter.com/OSIRISREx/status/1161011713891872768)
The spacecraft is about the size of a 15-passenger van, so for a familiar perspective, here's what each candidate site on Bennu would look like in a standard parking lot...

(https://pbs.twimg.com/media/EBy99aQW4AA6aYr.jpg)


7 мин. назад (https://twitter.com/OSIRISREx/status/1161011735505047554)
Nightingale, which lies within the white circle, covers roughly 6 parking spaces. Sampling regions in this site range from 16 ft (5 m) to 33 ft (10 m) in radius.

(https://pbs.twimg.com/media/EBy-Ah_X4AAJCOJ.jpg)


7 мин. назад (https://twitter.com/OSIRISREx/status/1161011776244330497)
Kingfisher, which lies within the white circle, covers roughly 6 parking spaces. The radius of the sample site is 16 ft (5 m).

(https://pbs.twimg.com/media/EBy-B-0XkAA0rxU.jpg)


7 мин. назад (https://twitter.com/OSIRISREx/status/1161011800684605442)
Osprey, which lies within the white circle, covers roughly 6 parking spaces. Sampling regions in this site are 16 ft (5 m) in radius.

(https://pbs.twimg.com/media/EBy-EcGXUAE6HjY.jpg)


7 мин. назад (https://twitter.com/OSIRISREx/status/1161011825703641088)
Sandpiper, which lies within the white circle, covers roughly 6 parking spaces. The radius of the sample site is 16 ft (5 m).

(https://pbs.twimg.com/media/EBy-FsxXUAYTAZu.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 19.08.2019 23:34:39
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx‏ Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 2 ч. назад (https://twitter.com/OSIRISREx/status/1163525240674086913)
New mission phase alert! Orbital C began just over a week ago. At an altitude of 1.1 miles (1.7 km), this new orbit is slightly higher than Orbital B. Orbital C is designed to study and monitor asteroid Bennu's particle ejection events.

Learn more: https://bit.ly/2KIchrn  (https://t.co/LlaLk1EQS5)

(https://pbs.twimg.com/media/ECWsCfrUYAAH3a6.jpg)


https://www.asteroidmission.org/orbital-c-phase/ (https://www.asteroidmission.org/orbital-c-phase/)
ЦитатаORBITAL C PHASE

(https://www.asteroidmission.org/wp-content/uploads/2019/01/Orbital-A-Rectangle2-300x166.png)

During Orbital C Phase, the OSIRIS-REx spacecraft entered its third orbital phase around asteroid Bennu. On August 8, 2019, the spacecraft performed a navigation maneuver that placed it into a circular orbit 1.1 miles (1.7 km) fr om the center of Bennu. While in this orbit, the spacecraft will take approximately 57 hours to complete one full orbit around the asteroid. In its previous orbital phase, Orbital B, the spacecraft was 0.4 miles (680 meters) above the asteroid's surface, or 0.6 miles (930 meters) from the center of Bennu, and completed one orbit every 22 hours.

At a slightly higher altitude, Orbital C is similar to the frozen orbit used in Orbital A (https://www.asteroidmission.org/asteroid-operations/). The spacecraft will spend 5 weeks in this orbit, during which OSIRIS-REx will continue high cadence particle monitoring for 30 days. Using NavCam images, the team will further study the asteroid's particle ejection events (https://www.asteroidmission.org/?latest-news=nasa-mission-reveals-asteroid-big-surprises) in order to pinpoint wh ere the events are happening on Bennu, and to document the frequency of ejection events.

Orbital C is scheduled through the second week of September, after which the spacecraft will begin its transition into Reconnaissance A phase for high passes over the four candidate sample collection sites. Data from these passes will be used to select the final two sites - a primary and a back-up - for the touchdown event next year.
Название: OSIRIS-REx
Отправлено: tnt22 от 20.08.2019 01:11:30
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx‏ Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 28 мин. назад (https://twitter.com/OSIRISREx/status/1163566832084647936)
Capturing the beauty and mystery of other worlds #WorldPhotographyDay (https://twitter.com/hashtag/WorldPhotographyDay?src=hash)   This image of asteroid Bennu was taken by PolyCam, built by @UALPL (https://twitter.com/UALPL)'s OCAMS team, on April 11 from a distance of 2.9 miles (4.6 km).

(https://pbs.twimg.com/media/ECXR3XYU4AEsgWr.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 27.08.2019 22:11:11
https://www.asteroidmission.org/mixedrocks/ (https://www.asteroidmission.org/mixedrocks/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/08/MixedRocks.png)

Mixed Rocks on Prime Meridian Boulder

This image shows a variety of rock types situated on asteroid Bennu's prime meridian boulder, located in the southern hemisphere. Both rough and smooth textures are present, as well as contrasting sizes and brightness. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 2, from a distance of 0.4 miles (0.7 km). The field of view is 30 ft (9.0 m). For scale, the crack in the boulder (lower right) is 8 ft (2.5 m) long, which is about the length of a horse. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam north.

Date Taken: July 2, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 28.08.2019 22:58:32
https://www.asteroidmission.org/20190702-smooth-boulders/ (https://www.asteroidmission.org/20190702-smooth-boulders/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/08/20190702-Smooth-Boulders.png)

Smooth Boulders in the Equatorial Region

This is a detailed view of a small area located just south of asteroid Bennu's equator. Three relatively large boulders with a similarly smooth texture are visible in the image (lower left and upper right). The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 2, from a distance of 0.4 miles (0.7 km). The field of view is 31 ft (9.4 m). For scale, the brightest rock in the image (upper right corner) is 3.5 ft (1.1 m) long, which is about the length of a fully-grown Great Dane. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was just south of the equator, pointing PolyCam straight down.

Date Taken: July 2, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 29.08.2019 20:12:38
https://www.asteroidmission.org/?latest-news=flyover-candidate-sample-sites (https://www.asteroidmission.org/?latest-news=flyover-candidate-sample-sites)
ЦитатаFLYOVER OF THE CANDIDATE SAMPLE SITES
August 29, 2019 -

https://www.asteroidmission.org/wp-content/uploads/2019/08/OSIRIS-REx_4sample_Sites_V06_EN_LQ.mp4 (https://www.asteroidmission.org/wp-content/uploads/2019/08/OSIRIS-REx_4sample_Sites_V06_EN_LQ.mp4) (00:57)

This animated flyover of each of the four candidate sample collection sites on asteroid Bennu, selected by NASA's OSIRIS-REx asteroid sample return mission, was produced using close-range data from the OSIRIS-REx Laser Altimeter (https://www.asteroidmission.org/objectives/instruments/) (OLA), an instrument contributed by the Canadian Space Agency. It illustrates the location of each site on Bennu, the topography of each site, and the potential sampling regions that the spacecraft will target, which are 10 meters in diameter.

The laser altimeter on NASA's OSIRIS-REx spacecraft has produced the highest resolution topographic maps ever of any planetary body. These maps of asteroid Bennu provide three-dimensional, detailed views of the OSIRIS-REx mission's final four candidate sample collection sites (https://www.asteroidmission.org/?latest-news=nasa-mission-selects-final-four-site-candidates-asteroid-sample-return), which are designated Nightingale, Kingfisher, Osprey and Sandpiper.

OLAis equipped with two lasers and uses a steerable mirror to rapidly scan the asteroid's surface to produce detailed images of boulders, craters and other geological features. OLA collected scans using its low-energy laser transmitter (LELT) during the spacecraft's low altitude orbit (https://www.asteroidmission.org/?latest-news=nasas-osiris-rex-mission-breaks-another-orbit-record) - approximately 700 meters above Bennu's surface. The LELT is designed to fire 10,000 light pulses per second at the asteroid, and three-dimensional terrain models of the four sites were produced using these light pulses.

High-resolution maps of the four potential sample sites will allow the OSIRIS-REx team to assess the safety and accessibility of each region, locate landmarks that will help the spacecraft navigate during sample collection and identify areas of fine-grained material compatible with OSIRIS-REx's sampling mechanism. These maps will be crucial for selecting the final two sample collection sites in December.

OLA's LELT will continue to gather Bennu data in tandem with the other instruments on the OSIRIS-REx spacecraft. The final selection of a primary and backup sample collection site will be announced in December 2019, and sample collection is scheduled for the latter half of 2020.

Credit: NASA/Goddard/University of Arizona/CSA/York University/MDA
Название: OSIRIS-REx
Отправлено: tnt22 от 30.08.2019 02:51:50
Цитата3D global map of asteroid Bennu, as measured by Canada's OLA instrument

(https://yt3.ggpht.com/a/AGF-l78lMxewTqPR6g8wIVjNAj1CA6ESiujnbW-Kcw=s88-c-k-c0xffffffff-no-rj-mo) (https://www.youtube.com/user/canadianspaceagency) Canadian Space Agency (https://www.youtube.com/channel/UCdNtqpHlU1pCaVy2wlzxHKQ)

Опубликовано: 29 авг. 2019 г.

2019-08-29 - This 3D global map of asteroid Bennu's topography was created from about 20 million measurements taken by the OSIRIS-REx Laser Altimeter (OLA), an instrument contributed to the international sample-return mission by the Canadian Space Agency. The colours represent the distance from the centre of Bennu: dark blue areas lie approximately 60 metres lower than peaks indicated in red. This model has a resolution of approximately one measurement per metre. Image creation: Michael Daly, Centre for Research in Earth and Space Science, York University (Credits: NASA, University of Arizona, Canadian Space Agency, York University, MacDonald, Dettwiler and Associates Ltd. (MDA))
https://www.youtube.com/watch?v=pGncXOBnjco (https://www.youtube.com/watch?v=pGncXOBnjco)https://www.youtube.com/watch?v=pGncXOBnjco (https://www.youtube.com/watch?v=pGncXOBnjco) (0:24)
Название: OSIRIS-REx
Отправлено: tnt22 от 30.08.2019 23:26:32
https://www.asteroidmission.org/20190702-cracked-boulder/ (https://www.asteroidmission.org/20190702-cracked-boulder/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/08/20190702-Cracked-Boulder.png)

Cracked Boulder

This image shows a large, cracked boulder located in asteroid Bennu's northern hemisphere. The image was taken at 5:30 pm Local Solar Time (https://www.asteroidmission.org/galleries/word-of-the-week/local-solar-time/#main), which explains the long shadows cast by the surface features. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 2, from a distance of 0.4 miles (0.7 km). The field of view is 34 ft (10.5 m). For scale, the cracked boulder is 17 ft (5.1 m) long, which is about the length of a mid-sized sedan. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam straight down.

Date Taken: July 2, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 03.09.2019 21:29:05
https://www.asteroidmission.org/20190703-angled-boulder/ (https://www.asteroidmission.org/20190703-angled-boulder/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/20190703-Angled-Boulder.png)

Sharp-Edged Boulder

This image shows a sharp-edged boulder located in asteroid Bennu's southern hemisphere. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 3, from a distance of 0.4 miles (0.7 km). The field of view is 30 ft (9.3 m). For scale, the angular boulder is 9 ft (2.8 m) long, which is about the length of a pool table. The image was obtained during the mission's Orbital B phase at 5:30 pm Local Solar Time (https://www.asteroidmission.org/galleries/word-of-the-week/local-solar-time/#main). When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam straight down.

Date Taken: July 3, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: Старый от 03.09.2019 21:56:03
Цитатаtnt22 написал:
 
Цитата Sampling regions in this site range from 16 ft (5 m) to 33 ft (10 m) in radius.
 Kingfisher, which lies within the white circle, covers roughly 6 parking spaces. The radius of the sample site is 16 ft (5 m).
Как обманчив глазомер. :( 
Название: OSIRIS-REx
Отправлено: tnt22 от 04.09.2019 00:17:11
https://www.asteroidmission.org/sandpiper-regional-imagery-zoom4/ (https://www.asteroidmission.org/sandpiper-regional-imagery-zoom4/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/Sandpiper-Regional-Imagery-Zoom4.gif)

Images from Bennu's Southern Hemisphere

This series of four images showcases the different fields of view captured on asteroid Bennu by the OSIRIS-REx spacecraft's camera suite. The images are of an area near sample site Sandpiper, which is located in Bennu's southern hemisphere. The first (https://www.asteroidmission.org/20190703-angled-boulder/), and closest, image shows a 9-foot (2.8-meter), sharp-edged boulder. It was taken by the PolyCam camera on July 3, from a distance of 0.4 miles (0.7 km), while the spacecraft was in Orbital B phase. The field of view is 30 ft (9.3 m). The second image (https://www.asteroidmission.org/northofsandpiper/) was also taken by PolyCam on April 5 from a distance of 1.7 miles (2.8 km), during Detailed Survey: Baseball Diamond phase. The second image's field of view is 128 ft (38.9 m). The third (https://www.asteroidmission.org/sandpiper-20190429/) is a MapCam image taken on April 29, during Detailed Survey: Equatorial Stations phase, from a distance of 1.5 miles (2.4 km). The field of view is 550 ft (167.6 m), and site Sandpiper is visible inside the large crater on the left side of the image. The final image (https://www.asteroidmission.org/3_asteroid-bennu-rotation_sm/) is a mosaic of images taken by PolyCam on December 2, 2018, the day before the spacecraft arrived at Bennu. The field of view is slightly wider than 1,640 ft (500 m) and the spacecraft was 15 miles (24 km) from the asteroid.

Instrument Used: OCAMS

Credit: NASA/Goddard/University of Arizona

Название: OSIRIS-REx
Отправлено: tnt22 от 04.09.2019 21:21:13
https://www.asteroidmission.org/20190703concaveboulder/ (https://www.asteroidmission.org/20190703concaveboulder/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/20190703concaveboulder.png)

Assorted Rocks in Northern Hemisphere

This image shows a region of smaller rocks and boulders located in asteroid Bennu's northern hemisphere. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 3, from a distance of 0.4 miles (0.7 km). The field of view is 33 ft (10.1 m). For scale, the bright boulder in the center of the image is 3 ft (1 m) across, which is about the size of a television. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam straight down.

Date Taken: July 3, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 05.09.2019 20:06:27
https://www.asteroidmission.org/20190704-sun-lit-boulder/ (https://www.asteroidmission.org/20190704-sun-lit-boulder/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/20190704-Sun-Lit-Boulder.png)

Sun-Lit Boulder in Bennu's Southern Hemisphere

This image captures a view of a sun-lit boulder located in asteroid Bennu's southern hemisphere. It was taken at 5:30 pm Local Solar Time, which explains the evening shadowing. The image was obtained by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 4, from a distance of 0.4 miles (0.7 km). The field of view is 31 ft (9.3 m). For scale, the large boulder is 24 ft (7.2 m) long. The small, bright rock at the base of the boulder is 1.3 ft (0.4 m) long, which is about the length of a cat. The image was obtained during the mission's Orbital B phase. When it was taken, the spacecraft was over the southern hemisphere, pointing PolyCam straight down.

Date Taken: July 4, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 07.09.2019 00:01:53
https://www.asteroidmission.org/bennu_fullglobe_rotating_gif/ (https://www.asteroidmission.org/bennu_fullglobe_rotating_gif/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/Bennu_FullGlobe_Rotating_GIF.gif)

OLA's Complete 3D Map of Bennu

This three-dimensional view of asteroid Bennu was created by the OSIRIS-REx Laser Altimeter (OLA), contributed by the Canadian Space Agency, on NASA's OSIRIS-REx spacecraft. This 3D global map of Bennu's topography was created from about 20 million measurements taken by OLA. From Feb. 12 through 17, OLA made more than 11 million measurements of the distance between OSIRIS-REx and Bennu's surface as the spacecraft flew less than 1.2 miles (2 km) above the surface. From July 2 through August 5, OLA took additional measurements using its low-energy laser transmitter (LELT). The LELT is designed to fire 10,000 light pulses per second at the asteroid, and operates approximately 700 meters above Bennu's surface.

OLA obtained these measurements by firing laser pulses at Bennu and measuring the amount of time it takes for the light to bounce off the asteroid's surface and return to the instrument. That time measurement is then translated into altitude data. Using this data, the OLA team created the 3-D model of Bennu's surface. The colors represent the distance from the center of Bennu: dark blue areas lie approximately 197 feet (60 meters) lower than peaks indicated in red.

Date Taken: August 5, 2019

Instrument Used: OLA

Credit: NASA/University of Arizona/CSA/York/MDA
Название: OSIRIS-REx
Отправлено: tnt22 от 09.09.2019 21:28:43
https://www.asteroidmission.org/20190708rock-on-boulders-edge/ (https://www.asteroidmission.org/20190708rock-on-boulders-edge/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/20190708Rock-on-Boulders-Edge.png)

Rock on Boulder's Edge

This image shows a small area just north of asteroid Bennu's equatorial region. Pictured is a diversely-shaped group of smaller rocks surrounded by larger boulders. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 8, from a distance of 0.4 miles (0.7 km). The field of view is 31 ft (9.5 m). For scale, the small rock perched on top of the large boulder (upper left) is 1.6 ft (0.5 m) across, which is about the size of a large watermelon. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam nearly straight down.

Date Taken: July 8, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: Veganin от 10.09.2019 00:23:30
Опять груда камней, хоть и на маленькой площади. АМС нужно зависнуть, схватить манипулятором булыжник и улететь к Земле :)
Название: OSIRIS-REx
Отправлено: tnt22 от 10.09.2019 20:13:27
https://www.asteroidmission.org/20190709cauliflowerboulder/ (https://www.asteroidmission.org/20190709cauliflowerboulder/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/20190709cauliflowerboulder.png)

Textured Boulder Near Bennu's Largest Boulder

This image shows a detailed view of a boulder feature located near asteroid Bennu's largest boulder in the southern hemisphere. The long morning shadows emphasize the feature's series of ledges, and a small, light-colored rock sits on one of the ledges. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 9, from a distance of 0.4 miles (0.7 km). The field of view is 31 ft (9.6 m). For scale, the light-colored rock is 2.8 ft (0.9 m), which is about the size of a pickup truck tire. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam nearly straight down.

Date Taken: July 9, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 11.09.2019 19:04:22
https://www.asteroidmission.org/20190711rockyravine/ (https://www.asteroidmission.org/20190711rockyravine/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/20190711RockyRavine.png)

Diverse Materials in Bennu's Southern Hemisphere

This image shows different types of rocks and boulders located in asteroid Bennu's southern hemisphere. In this small section, various shapes, textures and brightnesses are represented. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 11, from a distance of 0.4 miles (0.7 km). The field of view is 32 ft (9.8 m). For scale, the dark boulder in the center of the image is 13 ft (4 m) across, which is about the length of a coupe-style car. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam straight down.

Date Taken: July 11, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 11.09.2019 22:20:50
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx‏ Подлинная учетная запись @OSIRISREx (https://twitter.com/OSIRISREx) 2 ч. назад (https://twitter.com/OSIRISREx/status/1171832103241158656)

Happy 20th Discovery Day, Bennu!  On this day, 1999, Asteroid Bennu was discovered by the LINEAR Project.

(https://pbs.twimg.com/media/EEMvFZxWsAIUSU1.png)


2 ч. назад (https://twitter.com/OSIRISREx/status/1171832105141178369)

Upon discovery, 101955 Bennu was first designated 1999 RQ36. The first 4 digits give the year it was discovered, and the last 4 characters indicate when in that year the discovery occurred. 1999 RQ36 was the 916th object observed in the first half of September, 1999
Название: OSIRIS-REx
Отправлено: tnt22 от 12.09.2019 21:02:31
https://www.asteroidmission.org/20190713floatingrock/ (https://www.asteroidmission.org/20190713floatingrock/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/20190713floatingrock.png)

Bennu's South Pole at Dawn

This image shows a region near asteroid Bennu's south pole, where smaller rocks and larger boulders are mixed together. It was captured at 6:40 am Local Solar Time, so the long, morning shadows are cast to the left. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 13, from a distance of 0.4 miles (0.7 km). The field of view is 32 ft (9.7 m). For scale, the small, round boulder that is bright in color at the top center of the image is 1 ft (0.4 m) across, which is about the size of a wine bottle. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam slightly north and to the west.

Date Taken: July 13, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 16.09.2019 23:22:47
https://www.asteroidmission.org/20190715benbenpetrifiedmudslide/ (https://www.asteroidmission.org/20190715benbenpetrifiedmudslide/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/20190715BenBenPetrifiedMudslide.png)

Detailed View of Bennu's Largest Boulder

This image shows a detailed view of asteroid Bennu's largest boulder, Boulder No. 1, which is located in the southern hemisphere. The textural complexity of the boulder's surface is revealed at close range. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 15, from a distance of 0.4 miles (0.7 km). The field of view is 31 ft (9.5 m). For scale, the large crack that spans from the lower left of the image up to the image's right center is 31 ft (9.3 m), which is about the length of a city bus. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam straight down.

Date Taken: July 15, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 17.09.2019 19:39:38
https://www.asteroidmission.org/20190715graniterock/ (https://www.asteroidmission.org/20190715graniterock/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/20190715graniterock.png)

Rocks near Small Crater in Bennu's Equatorial Region

This image shows a detailed view of a small area in asteroid Bennu's equatorial region. The area contains a number of smaller rocks, and is located directly to the right of a small crater. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 15, from a distance of 0.4 miles (0.7 km). The field of view is 31 ft (9.4 m). For scale, the bright, triangular shaped rock (bottom center) is 5.4 ft long (1.7 m), which is about the size of a kangaroo. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was just south of the equator, pointing PolyCam straight down.

Date Taken: July 15, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 18.09.2019 22:34:44
https://www.asteroidmission.org/20190715dinosaurrock/ (https://www.asteroidmission.org/20190715dinosaurrock/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/20190715dinosaurrock.png)

Fractured Boulder in Bennu's Northern Hemisphere

This image shows a portion of a large boulder that is located in asteroid Bennu's northern hemisphere. The boulder has a prominent fracture running through it, and a small rock sits on top of the boulder's left side. Long, evening shadows are cast to the right, as the image was obtained at 6:00 pm Local Solar Time. It was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 15, from a distance of 0.4 miles (0.7 km). The field of view is 31 ft (9.6 m). For scale, the small rock perched on top of the large boulder (upper center) is 1 ft (0.3 m) across, which is about the size of a sunflower in full bloom. The image was obtained during the mission's Orbital B phase. The spacecraft was over the northern hemisphere, pointing PolyCam straight down when the image was taken.

Date Taken: July 15, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 19.09.2019 20:43:31
https://www.asteroidmission.org/20190716ledgeseat/ (https://www.asteroidmission.org/20190716ledgeseat/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/20190716ledgeseat.png)

Detailed View of Bennu's Prime Meridian Boulder

This image shows details of asteroid Bennu's prime meridian boulder, which is located in the southern hemisphere. A shadowed shelf in the boulder's northwest face can be seen on the left. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 16, from a distance of 0.4 miles (0.7 km). The field of view is 31 ft (9.5 m). For scale, the shadowed ledge on the left is 19 ft (5.7 m) long, which is about the length of a full-size pickup truck. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam straight down.

Date Taken: July 16, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 20.09.2019 20:36:18
https://www.asteroidmission.org/20190720sampleablematerial/ (https://www.asteroidmission.org/20190720sampleablematerial/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/20190720sampleablematerial.png)

Fine-Grained Material in Bennu's Northern Hemisphere

This image shows a small area of asteroid Bennu's northern hemisphere that contains patches of fine-grained material. Morning shadows, cast to the left, are visible. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 20, from a distance of 0.4 miles (0.7 km). The field of view is 31 ft (9.6 m). For scale, the light, rectangular rock (left) is 4.7 ft (1.4 m) long, which is about the length of a bicycle. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam nearly straight down.

Date Taken: July 20, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 24.09.2019 20:43:09
https://www.asteroidmission.org/20190720largefracturedboulders/ (https://www.asteroidmission.org/20190720largefracturedboulders/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/20190720largefracturedboulders.png)

Details on Large Boulders Near Equator

This image shows a group of large boulders located just north of asteroid Bennu's equatorial region. Two of the boulders have flat faces that exhibit linear marks. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 20, from a distance of 0.4 miles (0.7 km). The field of view is 31 ft (9.3 m). For scale, the crack that runs through the rectangular boulder (upper left) is 8.7 ft (2.7 m) long, which is about the length of a dining room table. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was just north of the equator, pointing PolyCam nearly straight down.

Date Taken: July 20, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 27.09.2019 03:04:05
https://www.asteroidmission.org/20190723linestreakedboulder/ (https://www.asteroidmission.org/20190723linestreakedboulder/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/20190723linestreakedboulder.png)

Line-Streaked Boulder

This image shows a detailed view of a line-streaked boulder in asteroid Bennu's northern hemisphere. The surrounding area is densely populated with large boulders. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 23, from a distance of 0.4 miles (0.7 km). The field of view is 32 ft (9.6 m). For scale, the small, bright rock to the right of the boulder is 23.6 inches (0.6 m) across, which is about the size of a bicycle tire. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam straight down.

Date Taken: July 23, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 28.09.2019 10:08:33
https://www.asteroidmission.org/20190724elephanthead-2/ (https://www.asteroidmission.org/20190724elephanthead-2/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/20190724elephanthead-1.png)

Rock in the Shadows

This image shows a portion of a large boulder located in asteroid Bennu's southern hemisphere. It was captured at 6:30 am Local Solar Time, so the shadows are long and cast to the left. The top of a smaller rock that sits in a depression on the boulder's lower right side is visible above the shadows. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 24, from a distance of 0.4 miles (0.7 km). The field of view is 32 ft (9.6 m). For scale, the small, bright rock just above the shadow (right center) is 6 inches (0.14 m) long, which is about the size of a dill pickle. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam straight down.

Date Taken: July 24, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 30.09.2019 20:12:32
https://www.asteroidmission.org/20190725rockwithlongshadow/ (https://www.asteroidmission.org/20190725rockwithlongshadow/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/09/20190725rockwithlongshadow.png)

Morning Shadows in Bennu's Equatorial Region

This image shows a common occurrence on asteroid Bennu -- a smaller rock situated on top of a large boulder. The image was taken at 6:15 a.m. Local Solar Time, and the long morning shadow cast by the small rock can be seen on the boulder's surface. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 25, from a distance of 0.4 miles (0.7 km). The field of view is 31 ft (9.4 m). For scale, the rock situated on top of the boulder (center) is 2.6 ft (0.8 m) long, which is about the size of human toddler. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was just south of the equator, pointing PolyCam straight down.

Date Taken: July 25, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona

Название: OSIRIS-REx
Отправлено: tnt22 от 01.10.2019 20:54:11
https://www.asteroidmission.org/20190725finegrainedmaterial/ (https://www.asteroidmission.org/20190725finegrainedmaterial/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/20190725finegrainedmaterial.png)

Patches of Fine-Grain Regolith

This image shows patches of fine-grained material located in asteroid Bennu's northern hemisphere. Taken at 6:15 a.m. Local Solar Time, it reveals long, morning shadows cast to the left. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 25, from a distance of 0.4 miles (0.7 km). The field of view is 32 ft (9.7 m). For scale, the bright boulder in the top center of the image is 5.6 ft (1.7 m) across, which is the length of a motor scooter. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam straight down.

Date Taken: July 25, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 02.10.2019 20:16:52
https://www.asteroidmission.org/20190726lipboulder/ (https://www.asteroidmission.org/20190726lipboulder/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/20190726lipboulder.png)

Fractured Boulder Near Equator

This image shows a detailed view of a large boulder near asteroid Bennu's equator. The boulder has a fracture running through it and is surrounded by other large boulders, one of which is casting the shadow partially covering the boulder. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 26, from a distance of 0.4 miles (0.7 km). The field of view is 30 ft (9.2 m). For scale, the fracture crossing the upper part of the boulder is 8.2 ft (2.5 m) long, which is about the length of a horse. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was just north of the equator, pointing PolyCam straight down.

Date Taken: July 26, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 03.10.2019 21:16:31
https://www.asteroidmission.org/20190729ironshapedboulder2/ (https://www.asteroidmission.org/20190729ironshapedboulder2/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/20190729ironshapedboulder2.png)

Boulder at Sunrise

This image shows the face of a boulder located near asteroid Bennu's south pole. Because it was captured near the south pole at 6:00 am Local Solar Time, the shadows of nearby boulders are very prominent. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 29, from a distance of 0.4 miles (0.7 km). The field of view is 31 ft (9.4 m). For scale, the left edge of the boulder's face is 12 ft (3.8 m) long, which is about the length of a male tiger. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam nearly straight down.

Date Taken: July 29, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 04.10.2019 20:36:41
https://www.asteroidmission.org/20190729frog/ (https://www.asteroidmission.org/20190729frog/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/20190729frog.png)

Detailed View of Bennu's South Pole

This image shows a portion of a cracked and line-marked boulder located near asteroid Bennu's south pole. It was captured in the same region as the image released on October 3 (https://www.asteroidmission.org/20190729ironshapedboulder2/). Taken approximately two minutes apart, the shadowing in the two images is similar. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 29, from a distance of 0.4 miles (0.7 km). The field of view is 31 ft (9.3 m). For scale, the tall, bright boulder (right center) is 7 ft (2.14 m) long, which is about the length of a queen-size mattress. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam nearly straight down.

Date Taken: July 29, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 07.10.2019 20:34:14
https://www.asteroidmission.org/20190730driftwood/ (https://www.asteroidmission.org/20190730driftwood/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/20190730driftwood.png)

Evening Shadows on Northern Boulder

This image shows a detailed view of a boulder located in asteroid Bennu's northern hemisphere. A shadow-covered depression can be seen on the lower portion of the boulder. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 30, from a distance of 0.4 miles (0.7 km). The field of view is 32 ft (9.9 m). For scale, the width of the shadowed depression is 5 ft (1.5 m), which is about the width of the Lincoln Memorial's columns. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam nearly straight down.

Date Taken: July 30, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona

Название: OSIRIS-REx
Отправлено: tnt22 от 08.10.2019 20:26:25
https://www.asteroidmission.org/20190730finegrains/ (https://www.asteroidmission.org/20190730finegrains/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/20190730finegrains.png)

Well-Lit Terrain in Bennu's Northern Hemisphere

This image shows a mixture of boulders, rocks, and fine-grained material located in asteroid Bennu's northern hemisphere. The surrounding region is free of large boulders, making this one of the most well-lit images taken during Orbital B phase. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 30, from a distance of 0.4 miles (0.7 km). The field of view is 31 ft (9.4 m). For scale, the bright, sharp-edged rock just right of the image's center is 2 ft (0.7 m) long, which is about the length of a mailbox. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam nearly straight down.

Date Taken: July 30, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 09.10.2019 21:26:44
https://www.asteroidmission.org/20190730dramatictraingleboulder/ (https://www.asteroidmission.org/20190730dramatictraingleboulder/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/20190730DramaticTraingleBoulder.png)

Dramatically Lit Boulder at North Pole

This image shows a large boulder located near asteroid Bennu's north pole. The image was captured at 6:00 a.m. Local Solar Time, resulting in long morning shadows cast to the left. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on July 30, from a distance of 0.4 miles (0.7 km). The field of view is 32 ft (9.9 m). For scale, the thin, bright rock just above the boulder (upper left) is 2 ft (0.7 m) long, which is about the size of an osprey. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam nearly straight down.

Date Taken: July 30, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 10.10.2019 21:40:03
https://www.asteroidmission.org/20191005-reconasandpiper/ (https://www.asteroidmission.org/20191005-reconasandpiper/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/20191005-ReconASandpiper.png)

Site Sandpiper during Reconnaissance A

This is the highest-resolution image of candidate sample site Sandpiper that's been captured as of October 5. Site Sandpiper is located in asteroid Bennu's southern hemisphere, and the region of interest is visible in the center of the image (situated above the large boulder). The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on October 5, from a distance of 0.6 miles (1 km). The field of view is 48 ft (14.6 m). For scale, the large, light colored boulder in the bottom center of the image is 16 ft (5 m) wide, which is about the size of a box truck. For scale, the large, light colored boulder in the bottom center of the image is 16 ft (5 m) wide, which is about the size of a box truck. The image was obtained during the mission's Reconnaissance A phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam slightly south and to the east.

Date Taken: October 5, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 10.10.2019 21:45:04
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx @OSIRISREx (https://twitter.com/OSIRISREx) 4 ч. назад (https://twitter.com/OSIRISREx/status/1182309881367482378)

High reconnaissance passes have started! Over the next 4 weeks, we'll share an image every Thursday to showcase new views of the candidate sample sites.

PSA: These are the highest-resolution images that we have of the candidate sites so far (https://abs.twimg.com/emoji/v2/72x72/1f60e.png)

Thursdays just got a lot better...

https://video.twimg.com/tweet_video/EGhojfnWoAE8fkO.mp4 (https://video.twimg.com/tweet_video/EGhojfnWoAE8fkO.mp4) (0:08)

Название: OSIRIS-REx
Отправлено: tnt22 от 11.10.2019 22:11:07
https://www.asteroidmission.org/20190801bouldercluster/ (https://www.asteroidmission.org/20190801bouldercluster/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/20190801bouldercluster.png)

Portion of Boulder Cluster in Northern Hemisphere

This image shows a detailed view of various boulder types located in asteroid Bennu's northern hemisphere. The boulders seen here are part of a large boulder cluster, which is just one of many such clusters present on the asteroid's surface. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on August 1, from a distance of 0.4 miles (0.7 km). The field of view is 31 ft (9.6 m). For scale, the longest axis of the flat, bright boulder (upper left) is 11 ft (3.4 m), which is about the length of an alligator. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam straight down.

Date Taken: August 1, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 14.10.2019 22:13:45
https://www.asteroidmission.org/20190802similartexturedboulders/ (https://www.asteroidmission.org/20190802similartexturedboulders/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/20190802similartexturedboulders.png)

Large Boulders and Long Shadows in Bennu's North

This image shows multiple large, similar textured boulders that are located in asteroid Bennu's northern hemisphere. It was captured at 6:30 a.m. Local Solar Time, so the shadows are long and cast to the left. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on August 2, from a distance of 0.4 miles (0.7 km). The field of view is 33 ft (10 m). For scale, the long, horizontal boulder (right center) is 18 ft (5.5 m) long, which is about the length of a full-size pickup truck. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam nearly straight down.

Date Taken: August 2, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 15.10.2019 20:56:40
https://www.asteroidmission.org/20190802peepingrock/ (https://www.asteroidmission.org/20190802peepingrock/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/20190802peepingrock.png)

Tall Bright Rock in the Shadows

This image shows a variety of boulders with different textures and sizes located in asteroid Bennu's equatorial region. A tall, bright rock emerges from the shadow cast by the boulder on the right. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on August 2, from a distance of 0.4 miles (0.7 km). The field of view is 30 ft (9.2 m). For scale, the bright rock peeking from the shadow is 1.6 ft (0.5 m) wide, which is about the size of a hare. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was just north of the equator, pointing PolyCam nearly straight down.

Date Taken: August 2, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona



Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx‏ @OSIRISREx (https://twitter.com/OSIRISREx) 21 мин. назад (https://twitter.com/OSIRISREx/status/1184160233251393536)

The second image shows this rock's location on the global mosaic. Lighting conditions, distance, and the spacecraft's position all alter the composition of an image. Each perspective captured is valuable for the mission.

(https://pbs.twimg.com/media/EG77dFlXUAAJH0d.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 16.10.2019 20:55:28
https://www.asteroidmission.org/20190805brightboulder/ (https://www.asteroidmission.org/20190805brightboulder/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/20190805brightboulder.png)

Straight-Edged Boulder Near Bennu's Equator

This image shows a large, straight-edged boulder near asteroid Bennu's equatorial region. The boulder is situated among much smaller rocks, which can be seen at its base (lower left). The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on August 5, from a distance of 0.4 miles (0.7 km). The field of view is 31 ft (9.4 m). For scale, the boulder's flat, sunlit edge is 18 ft (6 m) long, which is about the length of a canoe. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was just north of the equator, pointing PolyCam straight down.

Date Taken: August 5, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 17.10.2019 21:41:56
https://www.asteroidmission.org/20191012reconaosprey/ (https://www.asteroidmission.org/20191012reconaosprey/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/20191012ReconAOsprey.png)

Site Osprey During Reconnaissance A

This is the highest-resolution image captured of candidate sample site Osprey as of October 12. Site Osprey is located near asteroid Bennu's equator in the northern hemisphere. Because the region of interest is so large, only a portion of the crater is shown in this image. Site Osprey's recognizable features are visible - there is a dark patch of material in the center of the crater, and a large, flat boulder on the northern crater wall (upper left). The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on October 12, from a distance of 0.6 miles (1 km). The field of view is 47 ft (14.2 m). For reference, the fracture in the large boulder (upper left) is 10 ft (3 m) long, which is about the length of a standing grizzly bear. The image was obtained during the mission's Reconnaissance A phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam south and to the west.

Date Taken: October 12, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 17.10.2019 21:55:55
https://www.asteroidmission.org/candidate-sample-sites/osprey/ (https://www.asteroidmission.org/candidate-sample-sites/osprey/)
Цитата
OSPREY

(https://www.asteroidmission.org/wp-content/uploads/2019/08/Osprey-Main-Image-1024x1024.png) (https://www.asteroidmission.org/osprey-main-image/)
(11°, 88°)

Located near Bennu's equator, site Osprey is set in a small crater with a 33 ft (10 m) radius. Various areas within the crater are being evaluated for sample collection-one east of the crater's center and one west of the crater's center. These sampling areas have a 16 ft (5 m) radius. Given Osprey's geographical position on Bennu's equatorial bulge, it is possible that the region contains material from both the northern and southern hemispheres. The diversity of rock types in Osprey's surrounding area suggests that the regolith within Osprey may also be diverse. Osprey has the strongest spectral signature for carbon-rich material among the four sites. It also ranks second for the highest albedo and color variation among the candidate sites. A large, dark (low albedo) patch of material in the center of the site is of high scientific interest for the mission team.

(https://www.asteroidmission.org/wp-content/uploads/2019/08/Osprey-20190321-300x300.png) (https://www.asteroidmission.org/osprey-20190321/) (https://www.asteroidmission.org/wp-content/uploads/2019/08/Osprey-20190328-300x300.png) (https://www.asteroidmission.org/osprey-20190328/) (https://www.asteroidmission.org/wp-content/uploads/2019/08/Osprey-20190411-300x300.png) (https://www.asteroidmission.org/osprey-20190411/) (https://www.asteroidmission.org/wp-content/uploads/2019/08/Osprey-20190404-300x300.png) (https://www.asteroidmission.org/osprey-20190404/)

STEREO PAIRS

(https://www.asteroidmission.org/wp-content/uploads/2019/07/Stereopair_Osprey-300x236.jpg) (https://www.asteroidmission.org/candidate-sample-sites/osprey/stereopair_osprey/#main)

This set of stereoscopic images provides a 3D view of site Osprey, located in Bennu's southern hemisphere. The two images in this stereo pair were taken from slightly different viewpoints, with one of the images meant for the left eye and the other for the right. The two images are then combined by the brain to give the perception of depth. To see the pair in 3D, print off this image and view it through a stereoscope. The cropped and processed images were obtained on April 4, 2019, by the PolyCam camera during Flyby 5A of the mission's Detailed Survey: Baseball Diamond (https://www.asteroidmission.org/wp-content/uploads/2018/06/SPP-Baseball-Diamond-Poster.pdf) phase.

ANAGLYPH

(https://www.asteroidmission.org/wp-content/uploads/2019/07/Anaglyph_Osprey-175x300.jpg) (https://www.asteroidmission.org/candidate-sample-sites/osprey/anaglyph_osprey/#main)

This anaglyph of site Osprey was made from the stereopairs seen above. Each stereoscopic image was encoded using filters of chromatically opposite colors--one made with red and the other with cyan. When viewed through color-coded anaglyph glasses, each of the two images reaches the eye it's intended for, and a 3D image is produced. Anaglyphs are helpful for selecting a sample collection site because they allow the team to intuitively understand the three-dimensional structure of things like boulders and craters.

BOULDER COUNTS

(https://www.asteroidmission.org/wp-content/uploads/2019/06/BoulderCount_Osprey_East-300x214.png) (https://www.asteroidmission.org/candidate-sample-sites/osprey/bouldercount_osprey_east/#main) (https://www.asteroidmission.org/wp-content/uploads/2019/06/BoulderCount_Osprey_West-300x212.png) (https://www.asteroidmission.org/candidate-sample-sites/osprey/bouldercount_osprey_west/#main)

These Boulder Maps for site Osprey detail the number and location of boulders present within the region. Because Osprey has several possible sampling regions, a boulder count map was produced for each of these regions. The boulders are counted by the human eye, using a single image at a time. Many of these boulder counts were made by members of the public who participated in the CosmoQuest Bennu Mappers (http://bennu.cosmoquest.org/) citizen science campaign. The boulder counter marks each boulder by the longest axis (point to point) in order to calculate maximum boulder size. Rocks that are 10-21 cm are marked in yellow. Anything larger than 21 cm is marked in red. Rocks and debris that are ingested by the spacecraft's Touch-and-Go Sample Mechanism (TAGSAM) head must be no more than 2.5 cm wide.

SCALE COMPARISON

(https://www.asteroidmission.org/wp-content/uploads/2019/08/Osprey-Parking-Lot-300x300.png) (https://www.asteroidmission.org/candidate-sample-sites/osprey/osprey-parking-lot/#main)

SAMPLE SITE LOCATION

(https://www.asteroidmission.org/wp-content/uploads/2019/06/Sample-Site-Map-Osprey2.png)
Название: OSIRIS-REx
Отправлено: tnt22 от 21.10.2019 20:03:10
https://www.asteroidmission.org/20190805rockfragments/ (https://www.asteroidmission.org/20190805rockfragments/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/20190805rockfragments.png)

Bennu's Equator in the Morning

This image shows a variety of rocks with different textures and sizes located in asteroid Bennu's equatorial region. It was captured at 6:00 a.m. Local Solar Time, and as a result, the boulders cast long shadows to the left. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on August 5, from a distance of 0.4 miles (0.6 km). The field of view is 30 ft (9.4 m). For scale, the longest axis of the bright boulder in the upper right is 11 ft (3.3 m), which is about the size of a patio umbrella. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was just south of the equator, pointing PolyCam straight down.

Date Taken: August 5, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 22.10.2019 22:28:46
https://www.asteroidmission.org/20190805divotedboulder/ (https://www.asteroidmission.org/20190805divotedboulder/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/20190805divotedboulder.png)

Boulder with Divots

This image shows a region in asteroid Bennu's southern hemisphere - an accumulation of rocks is visible between the large boulders. A large, bright rock with divots on its surface (center) is recognizably different than the surrounding material. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on August 5, from a distance of 0.4 miles (0.6 km). The field of view is 29 ft (8.7 m). For scale, the rock casting a shadow on the divoted boulder is 4 ft (1.1 m) long, which is about the length of a cheetah. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was over the southern hemisphere, pointing PolyCam straight down.

Date Taken: August 5, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 23.10.2019 20:36:23
https://www.asteroidmission.org/920190807terminatorshot/ (https://www.asteroidmission.org/920190807terminatorshot/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/920190807terminatorshot.png)

Bennu's Terminator During Orbital B

This image captures a view of asteroid Bennu's terminator at the equatorial region. Just right of the transition line between day and night is a small, shadowed crater (bottom center). The image was taken by the MapCam camera on NASA's OSIRIS-REx spacecraft on August 7, from a distance of 0.4 miles (0.6 km). The field of view is 521 ft (159 m). For scale, the crater is 119 ft (36 m) wide, which is about the size of the Statue of Liberty from her heel to the tip of her crown. The image was obtained during the mission's Orbital B phase. When the image was taken, the spacecraft was just north of the equator, pointing MapCam north.

Date Taken: August 7, 2019

Instrument Used: OCAMS (MapCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: Старый от 23.10.2019 22:30:16
Почему у него нет фары?
Название: OSIRIS-REx
Отправлено: tnt22 от 24.10.2019 22:43:15
https://www.asteroidmission.org/20191019-kingfisherrecona/ (https://www.asteroidmission.org/20191019-kingfisherrecona/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/20191019-KingfisherReconA.png)

Kingfisher During Reconnaissance A

This is the highest-resolution image captured of candidate sample site Kingfisher as of October 19. Site Kingfisher is located near asteroid Bennu's equator in the northern hemisphere. The site itself is visible in the lower right of the image, located in the middle of the relatively clear space. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on October 19, from a distance of 0.6 miles (1 km). The field of view is 47 ft (14.4 m). For reference, the small crater is 9 ft (2.7 m) across, which is about the length of a dolphin. The image was obtained during the mission's Reconnaissance A phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam south and to the west.

Date Taken: October 19, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 25.10.2019 21:06:29
https://www.asteroidmission.org/candidate-sample-sites/sandpiper/anaglyph_sandpiper/#main (https://www.asteroidmission.org/candidate-sample-sites/sandpiper/anaglyph_sandpiper/#main)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/07/Anaglyph_Sandpiper.jpg)

Sandpiper Anaglyph

This anaglyph of site Sandpiper was made from the stereopairs seen above. Each stereoscopic image was encoded using filters of chromatically opposite colors--one made with red and the other with cyan. When viewed through color-coded anaglyph glasses, each of the two images reaches the eye it's intended for, and a 3D image is produced. Anaglyphs are helpful for selecting a sample collection site because they allow the team to intuitively understand the three-dimensional structure of things like boulders and craters.

Date Taken: March 21, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 28.10.2019 20:51:26
https://www.asteroidmission.org/candidate-sample-sites/osprey/anaglyph_osprey/#main (https://www.asteroidmission.org/candidate-sample-sites/osprey/anaglyph_osprey/#main)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/07/Anaglyph_Osprey.jpg)

Osprey Anaglyph

This anaglyph of site Osprey was made from the stereopairs seen above. Each stereoscopic image was encoded using filters of chromatically opposite colors--one made with red and the other with cyan. When viewed through color-coded anaglyph glasses, each of the two images reaches the eye it's intended for, and a 3D image is produced. Anaglyphs are helpful for selecting a sample collection site because they allow the team to intuitively understand the three-dimensional structure of things like boulders and craters.

Date Taken: April 4, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 29.10.2019 22:38:33
https://www.asteroidmission.org/candidate-sample-sites/kingfisher/anaglyph_kingfisher/#main (https://www.asteroidmission.org/candidate-sample-sites/kingfisher/anaglyph_kingfisher/#main)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/07/Anaglyph_Kingfisher.jpeg)

Kingfisher Anaglyph

This anaglyph of site Kingfisher was made from the above stereo pair. Each stereoscopic image was encoded using filters of chromatically opposite colors--one made with red and the other with cyan. When viewed through color-coded anaglyph glasses, each of the two images reaches the eye it's intended for, and a 3D image is produced. Anaglyphs are helpful for selecting a sample collection site because they allow the team to intuitively understand the three-dimensional structure of objects like boulders and craters.

Date Taken: March 21, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 30.10.2019 23:20:42
https://www.asteroidmission.org/candidate-sample-sites/nightingale/anaglyph_nightingale/#main (https://www.asteroidmission.org/candidate-sample-sites/nightingale/anaglyph_nightingale/#main)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/07/Anaglyph_Nightingale.jpeg)

Nightingale Anaglyph

This anaglyph of site Nightingale was made from the stereopairs seen above. Each stereoscopic image was encoded using filters of chromatically opposite colors--one made with red and the other with cyan. When viewed through color-coded anaglyph glasses, each of the two images reaches the eye it's intended for, and a 3D image is produced. Anaglyphs are helpful for selecting a sample collection site because they allow the team to intuitively understand the three-dimensional structure of things like boulders and craters.

Date Taken: March 21, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 31.10.2019 19:06:50
https://www.asteroidmission.org/nightingalerecona/ (https://www.asteroidmission.org/nightingalerecona/)
Цитата(https://www.asteroidmission.org/wp-content/uploads/2019/10/NightingaleReconA.png)

Nightingale during Reconnaissance A

This is the highest-resolution image captured of candidate sample site Nightingale as of October 26. Site Nightingale is located near asteroid Bennu's north pole. The crater's center is visible in the top center of the image, which contains an accumulation of smaller rocks. The image was taken by the PolyCam camera on NASA's OSIRIS-REx spacecraft on October 26, from a distance of 0.6 miles (1 km). The field of view is 47 ft (14.4 m). For reference, the light-colored boulder (far left center) is 5 ft (1.4 m) long, which is about the length of a bicycle. The image was obtained during the mission's Reconnaissance A phase. When the image was taken, the spacecraft was over the northern hemisphere, pointing PolyCam north and to the west.

Date Taken: October 26, 2019

Instrument Used: OCAMS (PolyCam)

Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 07.11.2019 21:34:09
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx‏ @OSIRISREx (https://twitter.com/OSIRISREx) 34 мин. назад (https://twitter.com/OSIRISREx/status/1192501544371073024)

The Asteroid Science in the Age of Hayabusa2 and OSIRIS-REx workshop will conclude with talks on rubble-pile asteroids, altered asteroids, primitive asteroids, and sample analysis (https://abs.twimg.com/emoji/v2/72x72/1f311.png)(https://abs.twimg.com/emoji/v2/72x72/1f50e.png)

If you're there, share some science highlights with us!
#SpinningTop2019 (https://twitter.com/hashtag/SpinningTop2019?src=hash)

(https://pbs.twimg.com/media/EIyd1QHXUAAi2fg.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 13.11.2019 00:44:59
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx‏ @OSIRISREx (https://twitter.com/OSIRISREx) 3 ч. назад (https://twitter.com/OSIRISREx/status/1194326855920312320)

Bennu's surface is full of similar looking rocks and grey material, so sometimes it's difficult to spot a sample site in an image. To make it easier, the team looks for the site's recognizable features. These features also help determine things like direction and location.

(https://pbs.twimg.com/media/EJMZ7PZWsAEtv6v.png)


3 ч. назад (https://twitter.com/OSIRISREx/status/1194326885943132161)

One of site Sandpiper's most recognizable features is this large, bright boulder, which has a fracture running through it. The boulder is 16 ft (5 m) wide, which is about the size of a box truck. The site is just above the boulder... get a better look here:
http://bit.ly/32Dgi6o  (https://t.co/9YzlXkXGQG)

(https://pbs.twimg.com/media/EJMZ9WsVUAAHfT1.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 13.11.2019 22:17:08
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx @OSIRISREx (https://twitter.com/OSIRISREx) 38 мин. назад (https://twitter.com/OSIRISREx/status/1194685716401475584)

Osprey's recognizable features may be the most distinct of all 4 sample sites. There is a dark patch of material in the crater's center and a large, flat boulder that sits on the northern wall (making it easy to determine which way is north).

(https://pbs.twimg.com/media/EJRgT78XYAIkPpV.png)


37 мин. назад (https://twitter.com/OSIRISREx/status/1194685743815368706)

This boulder is colloquially called the "12 o'clock rock" by the team. It is 16 ft (4.8 m) long, which is about the length of compact SUV.   See site Osprey from all angles: https://bit.ly/2XbF78c  (https://t.co/JV9jEOVjNS)

(https://pbs.twimg.com/media/EJRgVzKW4AIJrLs.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 14.11.2019 20:16:14
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx‏ @OSIRISREx (https://twitter.com/OSIRISREx) 20 мин. назад (https://twitter.com/OSIRISREx/status/1195022103210319872)

Site Kingfisher is tricky to pinpoint in an image like this.

(https://pbs.twimg.com/media/EJWSP7PXYAEJuhm.png)


20 мин. назад (https://twitter.com/OSIRISREx/status/1195022126320955393)

Look for the "Mickey Mouse ears"   The site itself is in the large crater, but the two neighboring craters are helpful markers. One "ear" is south of the crater, and the other is west. The southern crater is 9 ft (2.7 m) across, which is about the width of a parking space.

(https://pbs.twimg.com/media/EJWSR7GWkAAMHZG.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 15.11.2019 19:59:06
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx @OSIRISREx (https://twitter.com/OSIRISREx) 4 мин. назад (https://twitter.com/OSIRISREx/status/1195384347244806144)

Nightingale is pretty easy to recognize because of its dark regolith.  Try finding the site in these images: http://bit.ly/2NPHhHH  (https://t.co/ldJDmFuCnn)

(https://pbs.twimg.com/media/EJbbtgYXUAY1u0o.png)


4 мин. назад (https://twitter.com/OSIRISREx/status/1195384368119844865)

If you're not entirely sure, the "mountain" on the crater's northern rim is an absolute giveaway. The site is in the clear area, left of the boulder.  From the bottom of the crater, this jumbo-size boulder measures 33 ft (10 m) tall, about the height of a three-story building.

(https://pbs.twimg.com/media/EJbbvRJWkAEMxlj.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 19.11.2019 01:16:44
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx‏ @OSIRISREx (https://twitter.com/OSIRISREx) 2 ч. назад (https://twitter.com/OSIRISREx/status/1196521709647597569)

Candidate sample collection sites Nightingale, Kingfisher, Osprey, and Sandpiper are located in various nooks and crannies around Bennu.

Because the sites are geographically diverse they each have a unique topography.

Ready for some close-up, 3D views of each site's terrain?

(https://pbs.twimg.com/media/EJrmJQkWoAA07Fp.jpg)


2 ч. назад (https://twitter.com/OSIRISREx/status/1196524791265734657)

Here's a 3D printed Digital Terrain Model (DTM) of site Sandpiper. The crater's steep slopes stand out, along with the ruggedness of Bennu's southern hemisphere where Sandpiper is located.

(https://pbs.twimg.com/media/EJro80ZXYAEWZvB.jpg)


2 ч. назад (https://twitter.com/OSIRISREx/status/1196524793979424768)

The crater is 206 ft (63 m) in diameter, which is about the length of the Lincoln Memorial.

https://www.asteroidmission.org/candidate-sample-sites/sandpiper/ (https://www.asteroidmission.org/candidate-sample-sites/sandpiper/)
Название: OSIRIS-REx
Отправлено: tnt22 от 19.11.2019 20:11:22
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx‏ @OSIRISREx (https://twitter.com/OSIRISREx) 2 мин. назад (https://twitter.com/OSIRISREx/status/1196837461726572544)

Site Osprey is situated right in the middle of this Digital Terrain Model (DTM). The DTM showcases Osprey's "12 o'clock rock" and the crater floor's topography. The crater is 66 ft (20 m) in diameter, which is about the length of a bowling lane.

(https://pbs.twimg.com/media/EJwFUsvWoAEJN0p.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 20.11.2019 21:37:13
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx‏ @OSIRISREx (https://twitter.com/OSIRISREx) 33 мин. назад (https://twitter.com/OSIRISREx/status/1197213562642587648)

Looking at this Digital Terrain Model (DTM), you can see the small crater where site Kingfisher is located (lower left). The DTM reveals the crater's gradual slopes, along with the height of surrounding boulders.

(https://pbs.twimg.com/media/EJ1bYXYXkAAvFjf.jpg)


33 мин. назад (https://twitter.com/OSIRISREx/status/1197213570192330753)

The crater has a diameter of 26 ft (8 m), which is about the length of a dump truck.

Stroll through Kingfisher's terrain: https://bit.ly/2OAUKT0  (https://t.co/Oat7FXTYbF)

(https://pbs.twimg.com/media/EJ1bZN9WsAAgOsh.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 21.11.2019 21:31:22
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx @OSIRISREx (https://twitter.com/OSIRISREx) 27 мин. назад (https://twitter.com/OSIRISREx/status/1197575957021749248)

Located in the center of this Digital Terrain Model (DTM) is site Nightingale. The DTM shows the steep slopes on the crater's northern wall and the large boulders perched on the rim.

(https://pbs.twimg.com/media/EJ6k9XkUwAA66EX.jpg)


27 мин. назад (https://twitter.com/OSIRISREx/status/1197575967197106177)

The building-size boulder on the crater's eastern rim is 43 ft (13 m) across, about the length of a school bus.

Hike around Nightingale's terrain: https://bit.ly/2D5mAkJ  (https://t.co/cdhjQAg7HA)

(https://pbs.twimg.com/media/EJ6k_awU0AAIcOU.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 22.11.2019 23:19:49
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx @OSIRISREx (https://twitter.com/OSIRISREx) 2 ч. назад (https://twitter.com/OSIRISREx/status/1197938411140612096)

The team is in the midst of selecting the final primary and backup sample collection sites! Each site has its particular perks -- and its own obstacles. The team is mulling over all of these as they make their decision.  So... how's Sandpiper looking?  https://bit.ly/2OaVfnr  (https://t.co/hXZgFdKL9x)

(https://pbs.twimg.com/media/EJ_uoKBU4AEJcxa.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 03.12.2019 17:12:41
ЦитатаSurprises from Asteroid Bennu

(https://yt3.ggpht.com/a/AGF-l7_S3158Iax5KOPYENKVzQeedsuzhGLm0TKuhQ=s88-c-k-c0xffffffff-no-rj-mo) (https://www.youtube.com/user/NASAexplorer) NASA Goddard (https://www.youtube.com/channel/UCAY-SMFNfynqz1bdoaV8BeQ)

2 дек. 2019 г.

The OSIRIS-REx team has already pushed the boundaries of scientific exploration -- going from ground-based radar images from Arecibo in Puerto Rico all the way to orbiting a few hundred meters from asteroid Bennu. The team is mere months away from a sample collection attempt at the asteroid surface. Before this attempt, we take a look back at some of the major achievements, surprises and challenges of sampling an asteroid with OSIRIS-REx.
https://www.youtube.com/watch?v=rhBaNTEzNHg (https://www.youtube.com/watch?v=rhBaNTEzNHg)https://www.youtube.com/embed/rhBaNTEzNHg?feature=oembed (https://www.youtube.com/embed/rhBaNTEzNHg?feature=oembed) (2:19)
Название: OSIRIS-REx
Отправлено: tnt22 от 06.12.2019 00:47:17
https://www.asteroidmission.org/?latest-news=nasas-osiris-rex-mission-explains-bennus-mysterious-particle-events (https://www.asteroidmission.org/?latest-news=nasas-osiris-rex-mission-explains-bennus-mysterious-particle-events)
ЦитатаNASA's OSIRIS-REx Mission Explains Bennu's Mysterious Particle Events

December 4, 2019 - Shortly after NASA's OSIRIS-REx spacecraft arrived at asteroid Bennu, an unexpected discovery by the mission's science team revealed that the asteroid could be active, or consistently discharging particles into space. The ongoing examination of Bennu - and its sample that will eventually be returned to Earth - could potentially shed light on why this intriguing phenomenon is occurring.

(https://www.asteroidmission.org/wp-content/uploads/2019/12/Jan6Particle-image.png) (https://www.asteroidmission.org/?attachment_id=21130#main)
This view of asteroid Bennu ejecting particles fr om its surface on January 6 was created by combining two images taken by the NavCam 1 imager onboard NASA's OSIRIS-REx spacecraft: a short exposure image (1.4 ms), which shows the asteroid clearly, and a long exposure image (5 sec), which shows the particles clearly. Credit: NASA/Goddard/University of Arizona/Lockheed Martin

The OSIRIS-REx team first observed a particle ejection event in images captured by the spacecraft's navigation cameras taken on Jan. 6, just a week after the spacecraft entered its first orbit around Bennu. At first glance, the particles appeared to be stars behind the asteroid, but on closer examination, the team realized that the asteroid was ejecting material fr om its surface. After concluding that these particles did not compromise the spacecraft's safety, the mission began dedicated observations in order to fully document the activity.

"Among Bennu's many surprises, the particle ejections sparked our curiosity, and we've spent the last several months investigating this mystery," said Dante Lauretta, OSIRIS-REx principal investigator at the University of Arizona, Tucson. "This is a great opportunity to expand our knowledge of how asteroids behave."

After studying the results of the observations, the mission team released their findings in a Science paper published Dec. 6. The team observed the three largest particle ejection events on Jan. 6 and 19, and Feb. 11, and concluded that the events originated from different locations on Bennu's surface. The first event originated in the southern hemisphere, and the second and third events occurred near the equator. All three events took place in the late afternoon on Bennu.

The team found that, after ejection from the asteroid's surface, the particles either briefly orbited Bennu and fell back to its surface or escaped from Bennu into space. The observed particles traveled up to 10 feet (3 meters) per second, and measured from smaller than an inch up to 4 inches (10 cm) in size. Approximately 200 particles were observed during the largest event, which took place on Jan. 6.

The team investigated a wide variety of possible mechanisms that may have caused the ejection events, and narrowed the list to three candidates: meteoroid impacts, thermal stress fracturing, and released of water vapor.

Meteoroid impacts are common in the deep space neighborhood of Bennu, and it is possible that these small fragments of space rock could be hitting Bennu wh ere OSIRIS-REx is not observing it, shaking loose particles with the momentum of their impact.

The team also determined that thermal fracturing is another reasonable explanation. Bennu's surface temperatures vary drastically over its 4.3-hour rotation period.

(https://www.asteroidmission.org/wp-content/uploads/2019/12/Particle-gif.gif) (https://www.asteroidmission.org/?attachment_id=21133#main)
This animation illustrates the modeled trajectories of particles that were ejected from Bennu's surface on January 19. After ejecting from the asteroid's surface, the particles either briefly orbited Bennu and fell back to its surface or escaped away from Bennu and into space. Credit: NASA/Goddard/University of Arizona/Lauretta & Hergenrother et al., Science 10.1126

Although it is extremely cold during the night hours, the asteroid's surface warms significantly in the mid-afternoon, which is when the three major events occurred. As a result of this temperature change, rocks may begin to crack and break down, and eventually particles could be ejected from the surface. This cycle is known as thermal stress fracturing.

Water release may also explain the asteroid's activity. When Bennu's water-locked clays are heated, the water could begin to release and create pressure. It is possible that as pressure builds in cracks and pores in boulders wh ere absorbed water is released, the surface could become agitated, causing particles to erupt.

But nature does not always allow for simple explanations. "It could be that more than one of these possible mechanisms are at play," said Steve Chesley, an author on the paper and Senior Research Scientist at NASA's Jet Propulsion Laboratory in Pasadena, Calif. "For example, thermal fracturing could be chopping the surface material into small pieces, making it far easier for meteoroid impacts to launch pebbles into space."

If thermal fracturing, meteoroid impacts, or both, are in fact the causes of these ejection events, then this phenomenon is likely happening on all small asteroids, as they all experience these mechanisms. However, if water release is the cause of these ejection events, then this phenomenon would be specific to asteroids that contain water-bearing minerals, like Bennu.

Bennu's activity presents larger opportunities once a sample is collected and returned to Earth for study. Many of the ejected particles are small enough to be collected by the spacecraft's sampling mechanism, meaning that the returned sample may possibly contain some material that was ejected and returned to Bennu's surface. Determining that a particular particle had been ejected and returned to Bennu might be a scientific feat similar to finding a needle in a haystack. The material returned to Earth from Bennu, however, will almost certainly increase our understanding of asteroids and the ways they are both different and similar, even as the particle ejection phenomenon continues to be a mystery whose clues we'll also return home with in the form of data and further material for study.[

Sample collection is scheduled for summer 2020, and the sample will be delivered to Earth in September 2023.

NASA's Goddard Space Flight Center in Greenbelt, Maryland provides overall mission management, systems engineering, and the safety and mission assurance for OSIRIS-REx. Dante Lauretta of the University of Arizona, Tucson, is the principal investigator, and the University of Arizona also leads the science team and the mission's science observation planning and data processing. Lockheed Martin Space in Denver built the spacecraft and is providing flight operations. Goddard and KinetX Aerospace are responsible for navigating the OSIRIS-REx spacecraft. OSIRIS-REx is the third mission in NASA's New Frontiers Program, which is managed by NASA's Marshall Space Flight Center in Huntsville, Alabama, for the agency's Science Mission Directorate in Washington.
Название: OSIRIS-REx
Отправлено: tnt22 от 07.12.2019 02:03:48
https://nauka.tass.ru/nauka/7283381 (https://nauka.tass.ru/nauka/7283381)
Цитата6 ДЕК, 15:39
Зонд NASA проследил за выбросами пыли с поверхности астероида Бенну
Оказалось, что в космос выбрасываются не только небольшие частицы, но и достаточно крупные пылинки

ТАСС, 6 декабря. Камеры и другие научные приборы зонда OSIRIS-REx зафиксировали несколько повторных выбросов пыли с поверхности астероида Бенну. Часть из которых смогла "оторваться" от притяжения этого небесного тела и достичь открытого космоса. Снимки и замеры межпланетной станции ученые NASA опубликовали в научном журнале Science (https://science.sciencemag.org/cgi/doi/10.1126/science.aay3544).

"Мы открыли множество сюрпризов на поверхности Бенну, однако эти загадочные фонтаны частиц заинтересовали нас особенно сильно. На то, чтобы изучить загадку их формирования, мы потратили несколько последних месяцев. Для нас это была отличная возможность расширить представления о том, как ведут себя астероиды", - рассказал руководитель миссии Данте Лауретта.

Зонд OSIRIS-REx запустили в сентябре 2016 года в рамках миссии по сближению и сбору образцов с поверхности астероида Бенну (1999 RQ36). В недавнем прошлом этот астероид считали одной из угроз для существования жизни на нашей планете. Аппарат достиг небесного тела в начале декабря прошлого года и передал первые фотографии Бенну.

Оказалось, что этот астероид по форме и окраске очень похож на еще одно небесное тело, астероид Рюгю, который на протяжении последних полутора лет изучала японская миссия "Хаябуса-2". В отличие от сухого и безводного Рюгю, в породах Бенну астрономы нашли рекордные количества воды, что сделало его еще более интересным объектом с точки зрения изучения процесса формирования Солнечной системы.

Пыль космоса

В первых числах января этого года, как отмечает Лауретта, практически сразу после сближения с Бенну, навигационные камеры OSIRIS-REx зафиксировали очень странный феномен - с поверхности астероида в космос били своеобразные "фонтаны" из пыли, которые состояли из нескольких сотен частиц. Когда ученые убедились в том, что эти выбросы не угрожали работе зонда, они потратили несколько месяцев на их изучение.

Наблюдения подтвердили, что подобные "извержения" пыли действительно происходят достаточно часто. При этом новые данные заставили ученых усомниться в том, что они понимают, как именно возникают эти "фонтаны". В частности, Лауретта и его коллеги обнаружили, что в космос выбрасываются не только небольшие пылинки, но и достаточно крупные куски "космической гальки" диаметром в сантиметр и более.

Вдобавок сила этих выбросов оказалась такой, что значительная часть пыли разогналась до скоростей, которые позволили ей преодолеть притяжение Бенну и улететь в открытой космос. Это означает, что далеко не все астероиды являются "безжизненными" небесными телами, чья поверхность не меняется сама по себе.

Ученые пока не могут сказать, что стало причиной появления этих выбросов,так как два их главных источника - превращение поверхностных слоев льда в пар и центробежные силы - не должны работать на Бенну. По мнению Лауретты и его команды, на роль их источника примерно в равной степени претендуют падения микрометеоритов, а также процессы внутри недр самого астероида, которые связаны с запасами воды в его недрах или формированием трещин в булыжниках на поверхности под действием тепла и света Солнца.

Сейчас OSIRIS-REx заканчивает составление карты поверхности Бенну, после чего Лауретта и его коллеги выберут место, откуда будет взят образец вещества массой около 60 грамм. NASA планирует провести эту процедуру ориентировочно в середине лета 2020 года, если этому не помешают булыжники, которыми усеяна поверхность Бенну. После забора грунта OSIRIS-REx запустит капсулу с первичной материей Солнечной системы в сторону Земли. Если все пройдет удачно, она упадет на территории американского штата Юта в конце сентября 2023 года.
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 10:27:29
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx‏ @OSIRISREx (https://twitter.com/OSIRISREx) 9 ч. назад (https://twitter.com/OSIRISREx/status/1204884457750028290)

Which site will it be? Follow #XMarksTheSpot (https://twitter.com/hashtag/XMarksTheSpot?src=hash) tomorrow to find out!  Tune in at 1:00 pm EST for the announcement: https://bit.ly/38tt1fP  (https://t.co/dGwGXE7MgJ)

Цитата
youtube.com/watch?v=McrbVABVGhc (https://www.youtube.com/watch?v=McrbVABVGhc)

Начало трансляции в 21:00 ДМВ
(https://testforum.novosti-kosmonavtiki.ru/forum/file/108975)
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 21:10:40
(https://testforum.novosti-kosmonavtiki.ru/forum/file/108995) 
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 21:11:04
(https://testforum.novosti-kosmonavtiki.ru/forum/file/108996) 
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 21:11:58
(https://testforum.novosti-kosmonavtiki.ru/forum/file/108997)(https://testforum.novosti-kosmonavtiki.ru/forum/file/109001)(https://testforum.novosti-kosmonavtiki.ru/forum/file/108999)(https://testforum.novosti-kosmonavtiki.ru/forum/file/109000)(https://testforum.novosti-kosmonavtiki.ru/forum/file/108998)
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 21:12:30
(https://testforum.novosti-kosmonavtiki.ru/forum/file/109003) (https://testforum.novosti-kosmonavtiki.ru/forum/file/109002) 
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 21:12:55
(https://testforum.novosti-kosmonavtiki.ru/forum/file/109005)(https://testforum.novosti-kosmonavtiki.ru/forum/file/109004)
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 21:20:38
(https://testforum.novosti-kosmonavtiki.ru/forum/file/109010)(https://testforum.novosti-kosmonavtiki.ru/forum/file/109011)(https://testforum.novosti-kosmonavtiki.ru/forum/file/109009)(https://testforum.novosti-kosmonavtiki.ru/forum/file/109008)
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 21:21:40
(https://testforum.novosti-kosmonavtiki.ru/forum/file/109013)(https://testforum.novosti-kosmonavtiki.ru/forum/file/109012)
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 21:21:53
(https://testforum.novosti-kosmonavtiki.ru/forum/file/109015)(https://testforum.novosti-kosmonavtiki.ru/forum/file/109014)
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 21:30:04
(https://testforum.novosti-kosmonavtiki.ru/forum/file/109018)(https://testforum.novosti-kosmonavtiki.ru/forum/file/109020)(https://testforum.novosti-kosmonavtiki.ru/forum/file/109021)(https://testforum.novosti-kosmonavtiki.ru/forum/file/109017)(https://testforum.novosti-kosmonavtiki.ru/forum/file/109019)
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 21:33:47
Объявляется победитель
(https://testforum.novosti-kosmonavtiki.ru/forum/file/109022)

Выбранное место посадки - NIGHTINGALE
(https://testforum.novosti-kosmonavtiki.ru/forum/file/109023)

Запасной вариант - OSPREY
(https://testforum.novosti-kosmonavtiki.ru/forum/file/109024)
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 21:37:29
Мероприятие завершено

(https://testforum.novosti-kosmonavtiki.ru/forum/file/109025)
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 21:39:55
ЦитатаNASA Science Live: OSIRIS-REx X Marks the Spot

(https://yt3.ggpht.com/a/AGF-l7_vldfsXHGIvUlL-6NV7ICy0cEUJP3H6NpKdg=s88-c-k-c0xffffffff-no-rj-mo) (https://www.youtube.com/user/ScienceAtNASA) ScienceAtNASA (https://www.youtube.com/channel/UCKt6dYzHqHfpcp1lgj4bl1A)

Трансляция началась 38 минут назад

OSIRIS-REx - NASA's first asteroid sample return mission - has spent the last year studying asteroid Bennu. The mission has extensively mapped Bennu in order to better understand the asteroid and to choose the optimal site for sample collection. The team is now ready to reveal its final primary and back-up sample collection sites. Join experts as they make this exciting announcement and discuss the mission's plans for the next year leading up to the sampling event, which is scheduled for summer 2020.
https://www.youtube.com/watch?v=McrbVABVGhc (https://www.youtube.com/watch?v=McrbVABVGhc)https://www.youtube.com/embed/McrbVABVGhc (https://www.youtube.com/embed/McrbVABVGhc) (29:14)
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 21:45:59
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx‏ @OSIRISREx (https://twitter.com/OSIRISREx) 24 мин. назад (https://twitter.com/OSIRISREx/status/1205189610185166848)

While each site is diverse in location and topography, they each have highlights and challenges.

(https://pbs.twimg.com/media/ELmxi-AUUAAQrnr.jpg)


21 мин.21 минуту назад (https://twitter.com/OSIRISREx/status/1205190815401644032)

I'm going to site Nightingale! (https://abs.twimg.com/emoji/v2/72x72/1f6f0.png)(https://abs.twimg.com/emoji/v2/72x72/1f311.png)(https://abs.twimg.com/emoji/v2/72x72/1f389.png) #XMarksTheSpot (https://twitter.com/hashtag/XMarksTheSpot?src=hash)

(https://pbs.twimg.com/media/ELmyqCGUcAA69YI.jpg)


11 мин. назад (https://twitter.com/OSIRISREx/status/1205193577573150721)

Since we have multiple sampling attempts, the team selected Osprey as a backup site in case a follow-on attempt at Nightingale isn't possible.

(https://pbs.twimg.com/media/ELm1KQeUcAELFqw.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 21:47:48
Цитата(https://pbs.twimg.com/profile_images/880859752779046913/O2t0J2FF_bigger.jpg) NASA's OSIRIS-REx‏ @OSIRISREx (https://twitter.com/OSIRISREx) 9 мин. назад (https://twitter.com/OSIRISREx/status/1205194848522817536)

Big decisions have been made, and there's more to come. What's next?

(https://pbs.twimg.com/media/ELm2Ux-UwAAaQg7.jpg)
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 23:02:48
https://www.asteroidmission.org/?latest-news=x-marks-the-spot-nasa-selects-site-for-asteroid-sample-collection (https://www.asteroidmission.org/?latest-news=x-marks-the-spot-nasa-selects-site-for-asteroid-sample-collection)
ЦитатаX MARKS THE SPOT: NASA SELECTS SITE FOR ASTEROID SAMPLE COLLECTION

December 12, 2019 - After a year scoping out asteroid Bennu's boulder-scattered surface, the team leading NASA's first asteroid sample return mission has officially selected a sample collection site.

(https://www.asteroidmission.org/wp-content/uploads/2019/12/Nightingale.png) (https://www.asteroidmission.org/?attachment_id=21266#main)
This image shows sample site Nightingale, OSIRIS-REx's primary sample collection site on asteroid Bennu. The image is overlaid with a graphic of the OSIRIS-REx spacecraft to illustrate the scale of the site. Credit: NASA/Goddard/University of Arizona

The Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer (OSIRIS-Rex) mission team concluded a site designated "Nightingale" - located in a crater high in Bennu's northern hemisphere - is the best spot for the OSIRIS-REx spacecraft to snag its sample.

The OSIRIS-REx team spent the past several months evaluating close-range data fr om four candidate sites in order to identify the best option for the sample collection. The candidate sites - dubbed Sandpiper, Osprey, Kingfisher, and Nightingale - were chosen for investigation because, of all the potential sampling regions on Bennu, these areas pose the fewest hazards to the spacecraft's safety while still providing the opportunity for great samples to be gathered.

"After thoroughly evaluating all four candidate sites, we made our final decision based on which site has the greatest amount of fine-grained material and how easily the spacecraft can access that material while keeping the spacecraft safe," said Dante Lauretta, OSIRIS-REx principal investigator at the University of Arizona in Tucson. "Of the four candidates, site Nightingale best meets these criteria and, ultimately, best ensures mission success."

Site Nightingale is located in a northern crater 230 ft (70 m) wide. Nightingale's regolith - or rocky surface material - is dark, and images show that the crater is relatively smooth. Because it is located so far north, temperatures in the region are lower than elsewhere on the asteroid and the surface material is well-preserved. The crater also is thought to be relatively young, and the regolith is freshly exposed. This means the site would likely allow for a pristine sample of the asteroid, giving the team insight into Bennu's history.

Although Nightingale ranks the highest of any location on Bennu, the site still poses challenges for sample collection. The original mission plan envisioned a sample site with a diameter of 164 feet (50 m). While the crater that hosts Nightingale is larger than that, the area safe enough for the spacecraft to touch is much smaller - approximately 52 ft (16 m) in diameter, resulting in a site that is only about one-tenth the size of what was originally envisioned This means the spacecraft has to very accurately target Bennu's surface. Nightingale also has a building-size boulder situated on the crater's eastern rim, which could pose a hazard to the spacecraft while backing away after contacting the site.

(https://www.asteroidmission.org/wp-content/uploads/2019/12/Osprey.png) (https://www.asteroidmission.org/osprey-2/)
This image shows sample site Osprey, OSIRIS-REx's backup sample collection site on asteroid Bennu. The image is overlaid with a graphic of the OSIRIS-REx spacecraft to illustrate the scale of the site. Credit: NASA/Goddard/University of Arizona

The mission also selected site Osprey as a backup sample collection site. The spacecraft has the capability to perform multiple sampling attempts, but any significant disturbance to Nightingale's surface would make it difficult to collect a sample from that area on a later attempt, making a backup site necessary. The spacecraft is designed to autonomously "wave-off" from the site if its predicted position is too close to a hazardous area. During this maneuver, the exhaust plumes from the spacecraft's thrusters could potentially disturb the surface of the site, due to the asteroid's microgravity environment. In any situation wh ere a follow-on attempt at Nightingale is not possible, the team will try to collect a sample from site Osprey instead.

"Bennu has challenged OSIRIS-REx with extraordinarily rugged terrain," said Rich Burns, OSIRIS-REx project manager at NASA's Goddard Space Flight Center. "The team has adapted by employing a more accurate, though more complex, optical navigation technique to be able to get into these small areas. We'll also arm OSIRIS-REx with the capability to recognize if it is on course to touch a hazard within or adjacent to the site and wave-off before that happens."

With the selection of final primary and backup sites, the mission team will undertake further reconnaissance flights over Nightingale and Osprey, beginning in January and continuing through the spring. Once these flyovers are complete, the spacecraft will begin rehearsals for its "touch-and-go" sample collection event, which is scheduled for August. The spacecraft will depart Bennu in 2021 and is scheduled to return to Earth in September 2023.

NASA's Goddard Space Flight Center in Greenbelt, Maryland, provides overall mission management, systems engineering, and the safety and mission assurance for OSIRIS-REx. Dante Lauretta of the University of Arizona, Tucson, is the principal investigator, and the University of Arizona also leads the science team and the mission's science observation planning and data processing. Lockheed Martin Space in Denver built the spacecraft and provides flight operations. Goddard and KinetX Aerospace are responsible for navigating the OSIRIS-REx spacecraft. OSIRIS-REx is the third mission in NASA's New Frontiers Program, which is managed by NASA's Marshall Space Flight Center in Huntsville, Alabama, for the agency's Science Mission Directorate in Washington.

(https://www.asteroidmission.org/wp-content/uploads/2019/12/Closing-Tweet-2-Mosaic-with-2-Birds.jpg)
This flat projection mosaic of asteroid Bennu shows the relative locations of the primary and backup sample collection sites on the asteroid: Nightingale and Osprey. NASA's OSIRIS-REx spacecraft is scheduled to collect a sample in summer 2020. Credit: NASA/Goddard/University of Arizona
Название: OSIRIS-REx
Отправлено: tnt22 от 12.12.2019 23:24:47
https://svs.gsfc.nasa.gov/13489 (https://svs.gsfc.nasa.gov/13489)
ЦитатаOSIRIS-REx: X Marks the Spot - 2019 AGU Press Conference
Released on December 12, 2019

(https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/Bennu_Site_Candidates_CloseUp_print.jpg)
Download  (https://svs.gsfc.nasa.gov/13489#)
Close-up images of the OSIRIS-REx sample site candidates on asteroid Bennu.
Credit: NASA/Goddard/University of Arizona


NASA's OSIRIS-REx mission announced its primary and backup sample collection sites on asteroid Bennu, at a press conference hosted during AGU's Fall Meeting at 2 p.m. ET, Thursday, Dec. 12. 

The Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) spacecraft launched on Sept. 8, 2016, and arrived at asteroid Bennu on Dec. 3, 2018. In mid-2020, it will briefly touch down on Bennu's surface and collect a sample for return to Earth in late 2023. 

The mission represents a valuable opportunity to learn more about the origins of our solar system, the sources of water and organic molecules on Earth, and the hazards and resources in near-Earth space. 

The briefing participants are: 

Lori Glaze, director of planetary science for NASA's Science Mission Directorate at NASA Headquarters 
Dante Lauretta, OSIRIS-REx principal investigator at the University of Arizona, Tucson 
Dani DellaGiustina, OSIRIS-REx image processing lead scientist at the University of Arizona, Tucson 
Mike Moreau, OSIRIS-REx deputy project manager at NASA Goddard Space Flight Center 

For more information, go to nasa.gov/osirisrex (https://www.nasa.gov/osiris-rex) or asteroidmission.org (https://www.asteroidmission.org/)

(https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/1_Glaze_1_print.jpg)
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1. Glaze - Common Themes for Small Bodies ResearchCredit: NASA-HQ

(https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/1_Glaze_5_print.jpg)
Download  (https://svs.gsfc.nasa.gov/13489#)
2. Glaze - Bennu global mosaic and sample site candidates



Credit: NASA/Goddard/University of Arizona

(https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/2_Lauretta_1_print.jpg)
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1. Lauretta - Bennu global mosaic and sample site candidates (ibid)
Credit: NASA/Goddard/University of Arizona


(https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/2_Lauretta_2_print.jpg)
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2. Lauretta - Bennu sample site candidate close-ups



Credit: NASA/Goddard/University of Arizona

(https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/2_Lauretta_3_print.jpg)
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3. Lauretta - The OSIRIS-REx primary sample site, Nightingale



Credit: NASA/Goddard/University of Arizona

(https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/2_Lauretta_4_print.jpg)
Download  (https://svs.gsfc.nasa.gov/13489#)
4. Lauretta - The OSIRIS-REx primary sample site, Nightingale. The center of the site is marked with an X, and a silhouette of the spacecraft is added for scale.
Credit: NASA/Goddard/University of Arizona


https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/2_Lauretta_5.mp4 (https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/2_Lauretta_5.mp4)
Download  (https://svs.gsfc.nasa.gov/13489#)
5. Lauretta - 3D flyover animation of the OSIRIS-REx primary sample site, Nightingale



Credit: NASA/Goddard/University of Arizona/CSA/York University/MDA

(https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/2_Lauretta_6_print.jpg)
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6. Lauretta - The OSIRIS-REx backup sample site, Osprey



Credit: NASA/Goddard/University of Arizona

(https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/2_Lauretta_7_print.jpg)
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7. Lauretta - The OSIRIS-REx backup sample site, Osprey. The center of the site is marked with an X, and a silhouette of the spacecraft is added for scale.
Credit: NASA/Goddard/University of Arizona


https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/2_Lauretta_8.mp4 (https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/2_Lauretta_8.mp4)
Download  (https://svs.gsfc.nasa.gov/13489#)
8. Lauretta - 3D flyover animation of the OSIRIS-REx backup sample site, Osprey



Credit: NASA/Goddard/University of Arizona/CSA/York University/MDA

(https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/3_DellaGiustina_1_print.jpg)
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1. DellaGiustina - Bennu global image mosaic
Credit: NASA/Goddard/University of Arizona


(https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/3_DellaGiustina_2_print.jpg)
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2. DellaGiustina - Bennu global image mosaic, with primary and backup sample sites labeled
Credit: NASA/Goddard/University of Arizona


(https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/3_DellaGiustina_3_print.jpg)
Download  (https://svs.gsfc.nasa.gov/13489#)
3. DellaGiustina - The OSIRIS-REx primary and backup sample sites
Credit: NASA/Goddard/University of Arizona


(https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/3_DellaGiustina_4_DRAFT_print.jpg)
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4. DellaGiustina - The "sampleability" map for Sites Nightingale and Osprey, showing the location of sampleable material at each site. Blue regions correspond to high sampleability, while red regions correspond to low sampleability.
Credit: NASA/Goddard/University of Arizona


https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/4_Moreau_1.mp4 (https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/4_Moreau_1.mp4)
Download  (https://svs.gsfc.nasa.gov/13489#)
1. Moreau - Animation of OSIRIS-REx collecting a sample of Bennu
Credit: NASA's Goddard Space Flight Center


(https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/4_Moreau_2_print.jpg)
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2. Moreau - Size comparison of the planned sample collection safe zone before arriving at Bennu (orange), and after arriving at Bennu (blue). The safe zone for Site Nightingale is no wider than a few parking spaces.
Credit: NASA/Goddard/University of Arizona


(https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/4_Moreau_4_print.jpg)
Download  (https://svs.gsfc.nasa.gov/13489#)
3. Moreau - This image shows sample site Nightingale overlaid with a simplified hazard map. The OSIRIS-REx spacecraft uses this map to autonomously detect surface hazards, such as boulders or rocks, while it descends to collect a sample. The green illustrates areas that are free of hazards, and means the spacecraft will continue to the surface. Yellow demonstrates cautionary areas, and red areas contain the most hazards. If the spacecraft predicts it will touch either a yellow or red area, it will stop its descent and back away.
Credit: NASA/Goddard/University of Arizona


(https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/4_Moreau_5_print.jpg)
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4. Moreau - OSIRIS-REx Sample Acquisition Campaign schedule
Credit: NASA/Goddard/University of Arizona


https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/YOUTUBE_1080_4771_Bennu_Sites_3D_Clean_youtube_1080.mp4 (https://svs.gsfc.nasa.gov/vis/a010000/a013400/a013489/YOUTUBE_1080_4771_Bennu_Sites_3D_Clean_youtube_1080.mp4)
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Data visualization of asteroid Bennu and the OSIRIS-REx sample site candidates.
Credit: NASA/Goddard/University of Arizona/CSA/York University/MDA



Название: OSIRIS-REx
Отправлено: tnt22 от 13.12.2019 00:23:53
https://tass.ru/kosmos/7337469 (https://tass.ru/kosmos/7337469)
Цитата12 ДЕК, 22:49
В NASA определили, с какого участка поверхности астероида Бенну будет взята проба грунта
Речь идет об участке, получившем обозначение Nightingale

НЬЮ-ЙОРК, 12 декабря. /ТАСС/. Специалисты Национального управления США по аэронавтике и исследованию космического пространства (NASA) определили участок поверхности астероида Бенну, с которого будет взята проба грунта. Об этом сообщил в четверг на конференции, транслировавшейся на сайте NASA, руководитель программы исследований американской межпланетной станции OSIRIS-REx  Данте Лауретта.

По его словам, после тщательного исследования поверхности астероида, диаметр которого достигает 500 м, ученые первоначально определили 50 участков, представляющих интерес, затем сократили число потенциальных мест забора грунта до четырех, а теперь выбрали один, наиболее подходящий.

"Мы остановились на участке поверхности, получившем обозначение Nightingale, - сообщил он. - Это кратер диаметром около 20 м в северной части астероида. Его дно покрыто мелкими обломками, но у стены кратера есть и несколько крупных глыб, размеры которых превышают 7 м".

В начале 2020 года дистанционный манипулятор станции должен осуществить забор грунта массой около 60 г, затем капсула с образцом направится к Земле. Согласно расчетам, аппарат совершит посадку на территори