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ЦитироватьCosmic Penguin  @Cosmic_Penguin
While CASIC was knocked out of action for the rest of 2021, this launch from seaside Wenchang is now confirmed to roll ahead by local police road closure notices! Per previous reports this LM-7A is launching Dec. 23 ~10:30 UTC w/ you-know-what to GTO.

ЦитироватьCosmic Penguin  @Cosmic_Penguin
1. On the southern island of Hainan, a Long March 7A rocket has rolled out to its pad at Wenchang SLC earlier today w/ some still unknown thingy. New NOTAM messages confirmed (despite delay reports) its launch is planned on December 23rd ~10:10 UTC towards a GTO-like trajectory.

Цитировать(https://img.novosti-kosmonavtiki.ru/42242.jpg)   Cosmic Penguin  @Cosmic_Penguin
Interestingly from the few photos taken of this LM-7A rocket, this one has a longer and possibly smaller diameter fairing than on the last 2 launches. I wonder what's on top...
(https://img.novosti-kosmonavtiki.ru/183809.jpg)

Цитировать中国航天科技集团

ЦитироватьChina Aerospace Science and Technology Corporation
4分钟前
4 minutes ago
来自 微博视频号
From Weibo video number
 [我国再次成功发射一箭双星] 【长七A一箭双星发射成功】12月23日18时12分，长征七号A运载火箭在中国文昌航天发射场成功发射[试验十二号卫星]01星、02星。双星均由我航五院研制，主要用于空间环境探测及相关技术试验。长征七号A火箭是由我航一院研制的三级液体捆绑式新一代中型高轨运载火箭。本次任务是长征系列运载火箭第402次发射。
[Our country successfully launched one arrow and two stars again] [Chang 7A and one arrow and two stars were successfully launched] At 18:12 on December 23, the Long March VIIA carrier rocket was successfully launched at the Wenchang Space Launch Site in China Shiyan 12 satellite 01 satellite, 02 satellite. The double satellites are all developed by the Fifth Academy of China Aviation, and are mainly used for space environment detection and related technical tests. The Long March VIIA rocket is a three-stage liquid bundled new-generation medium-sized high-orbit launch vehicle developed by the First Academy of China Aviation Industry Corporation. This mission is the 402th launch of the Long March series of carrier rockets.

ЦитироватьКитай запустил два новых спутника "Шиянь" в космос
_{2021-12-23 19:26:37丨Russian.News.Cn}
(https://img.novosti-kosmonavtiki.ru/43824.jpg)

^{Фото Синьхуа}

Вэньчан /пров. Хайнань/, 23 декабря /Синьхуа/ -- Китай в четверг запустил два спутника в космос с помощью ракеты-носителя "Чанчжэн-7А" /Long March-7A/.
Запуск был осуществлен в 18:12 по пекинскому времени с космодрома Вэньчан в провинции Хайнань на юге Китая. Спутники "Шиянь-12 01" и "Шиянь-12 02" успешно вышли на заданную орбиту.
Для ракет-носителей серии "Чанчжэн" этот полет стал 402-м по счету.

Цитироватьhttps://www.youtube.com/watch?v=r8qR0zrMN6Y 3:22
Two secret satellites launched by improved CZ-7A, Chinese medium new generation rocket
(https://img.novosti-kosmonavtiki.ru/220752.jpg) (https://www.youtube.com/channel/UCVTregjgTEV7y45FaVB0JuQ)   Chinese Forces (https://www.youtube.com/channel/UCVTregjgTEV7y45FaVB0JuQ)
China successfully launched two secret satellites on 23rd Dec 2021.
The pair of satellites are named Experimental-12 01 and 02, the design purpose of both are kept secret.
The satellites entered the preset orbit and the launch mission was a success.
Both satellites are developed by the Fifth Institute of Aerospace Engineering.
They are reported to be mainly used for space environment exploration and related technology tests.
But Experimental series satellites are usually not what they are reported to be, some are related to military experiments.
A Long March 7A rocket launched the pair from the Wenchang Launch Center at 18:12.

Спойлер

The Long March 7A rocket is the medium high orbit rocket, part of new generation rockets.
The mission is the first Chinese new generation rockets launching two satellites.
Designers adopted a series external support fairing scheme, to accommodate the two satellites.
A new composite load-bearing inverted cone and integral mechano-satellite support were developed.
A digital liquid level processor in the last stage of the rocket is deployed, regulating the liquid oxygen flow, increasing output.
This particular Long Mach 7A has a total length of 60.7 meters, breaking height record of Chinese rocket.
It is also the rocket with the largest slenderness ratio in China, making it a more significant design challenge.
New attitude control parameters of the control system were designed, and the attitude stability and control accuracy is now proven.
The Long March 7A has three liquid stages, and strap-on boosters, developed by the First Institute of Aerospace Engineering.
The mission is the 402nd flight of the Long March series rockets.
The mission marks the 402nd launch of the Long March series of carrier rockets.
The Wenchang Launch Center is at the shore of South China Sea, attracting large amount of spectators in every launch mission.

[свернуть]

Photo and video: Wiki common, Weibo zhongguohangtianwenhua, Weibo Yangshijunsi, Wechat China Space Industry, Weibo Hantianwenhua.

Цитироватьhttps://www.youtube.com/watch?v=xUagiPU8aFU 1:50
Long March 7A launches two classified satellites from Wenchang 长征七号改成功发射试验十二号01、02星
(https://img.novosti-kosmonavtiki.ru/220668.jpg) (https://www.youtube.com/channel/UC0IVsxBHueg6Y86C5BZK3eQ)  China Space Exploration, CNSpace (https://www.youtube.com/channel/UC0IVsxBHueg6Y86C5BZK3eQ)

Цитировать(https://img.novosti-kosmonavtiki.ru/74899.jpg)  Dave Dickinson  @Astroguyz
US CSpOC Space-Track is now listing this AM's launch of what turned out to be Shiyan 12-01 and 02 by China as 3x objects in orbit, COSPAR IDs 2021-029A/B and C:  https://youtu.be/xUagiPU8aFU (https://t.co/oanfVAFnHj)
(https://img.novosti-kosmonavtiki.ru/183829.jpg)

ЦитироватьJonathan McDowell  @planet4589
CALT launched a Chang Zheng 7A at 1012 UTC Dec 23, placing the 试验十二号卫星01,02星  (Shiyan-12 01 and 02) satellites in geotransfer orbit of 190 x 35780 km x 19.5 deg. 4 objects cataloged (2 sats, rocket third stage, and probably an intersatellite adapter)

Цитироватьhttps://www.youtube.com/watch?v=JX94QM0iYXQ 2:41
Long March-7A launches Shiyan-12 01 and 02
(https://img.novosti-kosmonavtiki.ru/220832.jpg)  SciNews (https://www.youtube.com/channel/UCjU6ZwoTQtKWfz1urL7XcbA)
A Long March-7A launch vehicle launched two satellites, Shiyan-12 01 and Shiyan-12 02, from the Wenchang Spacecraft Launch Site, Hainan Province, China, on 23 December 2021, at 10:12 UTC (18:12 local time). The mission was the third launch for the Long March-7A rocket (长征七号甲, 长征七号A). The Shiyan-12 01 and 02 satellites (试验十二号卫星01星、02星) will be "mainly used for space environment exploration and related technical tests."
Credit: China Media Group(CMG)/China Central Television (CCTV)/China Aerospace Science and Technology Corporation (CASC)

Цитата: Liss от 31.01.2022 11:40:31Тем временем 26-28 января на орбите медленного дрейфа два SY-12 вновь разошлись на 0.14°, как было в начале января в точке стояния до визита GSSAP-3. Любят они такую взаимную дистанцию.

Цитата: Liss от 05.02.2023 14:53:34В середине августа 2022 г. объект A развернулся над 16.75°в.д. и пошел на восток. Сейчас он над 108°в.д.
В конце ноября 2022 г. объект B развернулся над 178.5°в.д. и пошел на запад. Сейчас он над 124°в.д.

Цитата: Liss от 20.02.2023 12:54:19Они вновь встретились над 117.5°в.д.

Цитата: полтора_землекопа от 05.02.2023 15:01:58Повадки как у GSSAP'ов