ПБС

[tnt22]

Joseph Remis‏ @jremis 3 ч. назад

Obj. 41480 FLOCK 2EP 3 decay prediction: April 17, 2018 UTC 15h04mn ± 36h https://i.imgur.com/Ped5v6Q.jpg 

[tnt22]

Joseph Remis‏ @jremis 10 ч. назад

Obj. 27374 IRIDIUM 94 decay prediction: April 18, 2018 UTC 14h02mn ± 38h https://i.imgur.com/hvbGFwQ.jpg 

[tnt22]

Joseph Remis‏ @jremis 3 ч. назад

Update: obj. 42067 LEMUR 2 TRUTNA decay prediction: April 15, 2018 UTC 03h56mn ± 2h https://i.imgur.com/M0rgfTv.jpg 

[tnt22]

Jonathan McDowell‏Подлинная учетная запись @planet4589 2 мин. назад

The @SpireGlobal LEMUR-2-TRUTNA cubesat reentered on Apr 15 between 0230 and 0430 UTC. Reentry location is unknown. 57 Lemur-2 satellites remain in low Earth orbit.

[tnt22]

Joseph Remis‏ @jremis 2 ч. назад

Obj. 11027JIKIKEN (EXOS-B) decay prediction: April 23, 2018 UTC 21h37mn ± 36h https://i.imgur.com/JCwDPnV.jpg 

[tnt22]

Jonathan McDowell‏Подлинная учетная запись @planet4589 1 ч. назад

Iridium 94 reentered south of the Aleutian Islands at 0602 UTC

[tnt22]

Jonathan McDowell‏Подлинная учетная запись @planet4589 2 мин. назад

The Flock 2e'-3 cubesat reentered at about 1214 UTC Apr 18 over Central Africa

[поц]

Joseph Remis‏ @jremis 20 ч.20 часов назад


Update: obj. 11027JIKIKEN (EXOS-B) decay prediction: April 23, 2018 UTC 01h57mn ± 16h

[tnt22]

Joseph Remis‏ @jremis 4 ч. назад

Obj. 39397 HORUS decay prediction: April 26, 2018 UTC 22h52mn ± 32h https://i.imgur.com/flnxh9t.jpg 

[tnt22]

Joseph Remis‏ @jremis 3 ч. назад

Obj. 27616 COSMOS 2393 SL-6 R/B(2) decay prediction: April 26, 2018 UTC 22h33mn ± 32h https://i.imgur.com/9DvcRjt.jpg 

[tnt22]

Joseph Remis‏ @jremis 6 ч. назад

Obj. 24840 IRIDIUM 13 decay prediction: April 30, 2018 UTC 04h37mn ± 36h https://i.imgur.com/CFZtYrE.jpg 

[tnt22]

Joseph Remis‏ @jremis 5 ч. назад

Obj. 40347 BREEZE-M DEB (TANK) decay prediction: April 30, 2018 UTC 14h06mn ± 40h https://i.imgur.com/Om3bXiS.jpg 

[tnt22]

Dave Dickinson‏ @Astroguyz 4 ч. назад

Next reentry now in the front slot: BREEZE-M debris NORAD ID 2014-082C set for April 28th at 11:23 UT+/-12 hours: http://www.aerospace.org/cords/reentry-predictions/upcoming-reentries-2-2/breeze-m-debris/ ... #spacejunk

[tnt22]

https://www.nasa.gov/feature/goddard/2018/nasa-s-rossi-x-ray-timing-explorer-spacecraft-to-re-enter-over-tropics

April 25, 2018

NASA's Rossi X-ray Timing Explorer Spacecraft to Re-enter Over Tropics

Fragments of the Rossi X-ray Timing Explorer (RXTE) spacecraft, a NASA mission to observe the time variation of astronomical X-ray sources, are expected to fall to Earth on or about May 1. The mission was terminated and the spacecraft decommissioned on Jan. 12, 2012.

The U.S. Space Surveillance Network, operated by the Department of Defense U.S. Strategic Command's Joint Space Operations Center (JSpOC), has been monitoring RTXE's descent since the mission was determined to be close to re-entering in early January 2018. Most of the spacecraft will burn up in the atmosphere during its uncontrolled re-entry.

The JSpOC will issue periodic predictions of re-entry date and time. Although the exact location of the re-entry cannot be predicted, RXTE's orbit only brings it over the tropics between 23 degrees north latitude and 23 degrees south latitude. Europe, Russia and most of North America and Japan are outside of the potential re-entry area.

Спойлер

Since the beginning of the space age in 1957, there has been no confirmed report of an injury resulting fr om re-entering orbital objects. Any sightings of expected RXTE debris should be reported to local authorities. Most of the pieces of RXTE expected to survive re-entry are made of titanium and are not toxic. Debris could have sharp edges and should not be touched or handled.

The NASA Orbital Debris Program Office estimates that 50 components of the RXTE spacecraft will survive re-entry. The chance that one of these pieces would strike someone is approximately 1 in 992, meaning if re-entry happened 992 times, we would expect that only one person on Earth would be harmed.

NASA, the U.S. government, and some foreign space agencies lim it the risk from re-entering space objects to less than 1 in 10,000; RXTE was launched in 1995, prior to the establishment of this standard practice.

The value of the new type of X-ray data produced by RXTE is widely recognized by the scientific community and helped further our understanding of matter under extreme conditions — as it exists near neutron stars and black holes.

The RXTE dataset will continue to be used for research by the worldwide astronomical community for decades to come.


Contact: J.D. Harrington

NASA Office of Communications
NASA Headquarters, Washington, D.C.

j.d.harrington@nasa.gov

[свернуть]

Last Updated: April 25, 2018
Editor: Rob Garner

[tnt22]

Jonathan McDowell‏Подлинная учетная запись @planet4589 4 ч. назад

Prediction from @SpaceTrackOrg: RXTE to reenter between about 0230 UTC Apr 30 and 1630 UTC May 1.

[tnt22]

Jonathan McDowell‏Подлинная учетная запись @planet4589 8 ч. назад

RXTE satellite's orbit this morning down to 194 x 199 km. DTB-99951 down to 105 x 1069 km. Iridium-13 down to 158 x 269 km.

[tnt22]

Jonathan McDowell‏Подлинная учетная запись @planet4589 6 ч. назад

The Proton/Briz propellant tank DTB-99951 reentered at 0303 UTC Apr 29 over eastern Mongolia; last orbit was 105 x 800 km. 83 DTB tanks remain in elliptical orbit.

[tnt22]

Jonathan McDowell‏Подлинная учетная запись @planet4589 6 ч. назад

Iridium 13 reentered at 0638 UTC Apr 29 over the Pacific 2400 km west of Peru. Of 95 first-gen sats launched, 29 remain in the constellation orbit, 24 have had their orbits lowered for reentry (of which 16 now down), 19 retired in orbits just below the constel, 23 are failed

[tnt22]

Jonathan McDowell‏Подлинная учетная запись @planet4589 5 ч. назад

Rossi X-ray Timing Explorer now in 185 x 193 km orbit. New TIP predict from @SpaceTrackOrg shows reentry between Apr 30 1120 UTC and May 1 0320 UTC

[tnt22]

Joseph Remis‏ @jremis 2 ч. назад

Update: obj. 43444 ZHUHAI CZ-11 R/B decay prediction: April 29, 2018 UTC 23h14mn ± 2h https://i.imgur.com/YrfDe5y.jpg