ПБС

[Брабонт]

Старый пишет:
Если орбита по любительским наблюдениям то о сходе с орбиты мы можем и не узнать.

Не обязательно. Стратком может сообщить о факте, но без орбитальных данных.

[tnt22]

Старый пишет:
А у 43-го уже 220х326

Jonathan McDowell‏Verified account @planet4589 2h ago

Iridium 43 reentered Feb 12, probably over the Arctic. It was launched in 1997 and decommissioned in May 2017.

[tnt22]

Jonathan McDowell‏Verified account @planet4589 37m ago

Meanwhile, it looks looks like Iridium 49 completed orbit lowering and was decommissioned on Feb 2, with reentry expected later today, Feb 13.

[tnt22]

https://www.thalesgroup.com/en/worldwide/space/news/eutelsat-16c-satellite-formerly-sesat-sets-record-orbit-life

EUTELSAT 16C SATELLITE, FORMERLY SESAT, SETS RECORD FOR IN-ORBIT LIFE

13.02.2018 | THALES ALENIA SPACE

Launched on April 17, 2000, the Eutelsat satellite was recently deorbited, after 17 years and 10 months of reliable service

A global success story



Designed for a contractual orbital life of 10 years, the EUTELSAT 16C/SESAT telecommunications satellite has now been deorbited after 17 years and 10 months of operational service.

As the first commercial satellite contracted by a European satellite operator, EUTELSAT 16C/SESAT marked the start of cooperation between Russian and European space industries.

Спойлер

Launched on April 17, 2000 on a Proton-Block DM vehicle, it was built under the management of Eutelsat by an integrated team of ISS Reshetnev as prime and Thales Alenia Space as payload supplier. For Thales Alenia Space, it was the first in a long series of projects jointly built with ISS Reshetnev (more than 30). It also signaled a broader opening of the Russian market (35 payloads or satellites already delivered or under construction by Thales Alenia Space), the start of joint programs with a Russian manufacturer for export markets (5) as well as the implementation of an industrial cooperation plan with the Russian space industry at equipment level.

The EUTELSAT 16C/SESAT payload offered 18 Ku-band channels, allowing Eutelsat to offer TV broadcasting, data and video transmission, broadband Internet, telelearning, telemedicine and software transfer services. The Eutelsat satellite offered users a high degree of operational flexibility, since it was fitted with a wide beam and a steerable spot beam, with switching between the two beams.

[свернуть]

[tnt22]

Jonathan McDowell‏Verified account @planet4589 48m ago

Consistent with prediction, Iridium 49 reentered at 1200 UTC Feb 13, 750 km SE of Tonga

[Олег]

По разному падали 43 и 49

[tnt22]

18 SPCS‏ @18SPCS 9h ago

18 SPCS confirms breakup of FREGAT DEB (#43089, 2017-086C) on 12Feb btwn 0955-0959z. 25+ pieces. Cause unknown at this time. Check @SpaceTrackOrg for info

[Олег]

По поводу мусора. Взял из space-track список TLE. Всего 16790.
Из низ у 10580 в названии слово DEB, у 1800 - R/B, у 81 - TANK

[Брабонт]

О спутниках на картинке 18-го эскадрона. Канадцы недавно сообщили, что NEOSat починился и снова работает на североамериканскую безопасность в космосе, на пару с "Сапфиром".

[tnt22]

Jonathan McDowell‏Verified account @planet4589 45m ago

The Soyuz rocket stage from the Progress MS-08 cargo ship launch reentered at 2140 UTC Feb 16 (2.40pm MST) over eastern North Dakota

[Олег]

tnt22 пишет:
at 2140 UTC Feb 16 (2.40pm MST) over eastern North Dakota

Это у них там - день. Что там видели? 

[Старый]

Два дня назад просматривал орбиты выпущенных с МКС мусоросатов.
Обратил внимание какая редкая орбита у FLOCK 2e'10 1998-067KA  №41576 - 180х186 км.
 Редкий мусоросат летает по такой орбите.  Думаю: долго продержится? Хотел поделиться но форум висел. Сегодня смотрю: уже всё. Сошёл 17 февраля.

[Старый]

626 дней на орбите. Это часом не рекорд для Флоков?

[Старый]

В смысле для Флоков уже прекративших существование. Большинство Флоков запущеных одновременно с этим ещё на орбите. Причём два на 340-километровой. Они часом не применяют орбитальное хранение спутников в режиме минимального торможения, чтобы ввести их в действие в нужный момент?

[Олег]

Вот, по 4 шт. Flock, выпущенным в одно время. 2 упали, 2 еще падают

[tnt22]

http://blogs.esa.int/rocketscience/2018/01/12/tiangong-1-reentry-updates/

Posted on 12 January 2018 by Daniel

TIANGONG-1 REENTRY UPDATES

Latest reentry time window forecast provided by the Space Debris Office at ESA's ESOC mission control centre, Darmstadt, Germany.

Note: Read our updated FAQ

Update 21 February 2018

The current estimated window is ~24 March to ~19 April; this is highly variable.

Reentry will take place anywhere between 43ºN and 43ºS (e.g. Spain, France, Portugal, Greece, etc.). Areas outside of these latitudes can be excluded. At no time will a precise time/location prediction from ESA be possible. This forecast will be updated approximately every week in January and February.


Reentry window forecast as of 21 Feb Credit: ESA


Altitude decay forecast as of 21 Feb Credit: ESA

[ВВК]

Старый пишет:
626 дней на орбите. Это часом не рекорд для Флоков?

Когда публиковались месячные отчеты АСПОС ОКП,  по моим прикидкам, те Флоки,которые выводили наши носители, вроде дольше на орбите остаются, никто статистики такой не вел? А те что с МКС по-моему вообще не задерживаются? Может кто подскажет.

[tnt22]

Jonathan McDowell‏Подлинная учетная запись @planet4589 9 ч. назад

The @planetlabs Flock 2e-10 and Flock 2e'-12 satellites (0C82 and 0C81) reentered on Feb 28, about 16 hours apart.

[tnt22]

Evidence-Based Dave Dickinson‏ @Astroguyz 19 мин. назад

There's a good pass of the now defunct Chinese space station Tiangong-1 over the eastern U.S. and #Virginia coming up tonite at 6:58 PM EST. Predicted to reenter in early April:

http://www.aerospace.org/cords/reentry-predictions/tiangong-1-reentry/ ...

[поц]

Jonathan McDowell‏Подлинная учетная запись @planet4589 11 ч.11 часов назад

The third stage from India's 2015 GSLV/GSAT-6 launch reentered from geotransfer orbit on Mar 2, probably over the Pacific at about 2100 UTC