cosmos.wikisort.org - Spacecraft
Ekspress-A4 (Russian: Экспресс-A4 meaning Express-A4), is a Russian communications satellite which is operated by Russian Satellite Communications Company (RSCC). It was constructed by NPO PM and Alcatel Space and is based on the MSS-2500-GSO satellite bus.
| Names | Экспресс-A1R Express-A1R Ekspress-A No. 4 Express-A4 Ekspress-4A Atlantic Bird 14 |
|---|---|
| Mission type | Communications |
| Operator | Russian Satellite Communications Company (RSCC) |
| COSPAR ID | 2002-029A |
| SATCAT no. | 27441 |
| Website | eng |
| Mission duration | 7 years (planned) 17.5 years (achieved) |
| Spacecraft properties | |
| Spacecraft | Ekspress-A1R |
| Spacecraft type | KAUR |
| Bus | MSS-2500-GSO |
| Manufacturer | NPO PM (bus) Alcatel Space (payload) |
| Launch mass | 2,600 kg (5,700 lb) |
| Power | 2540 watts |
| Start of mission | |
| Launch date | 10 June 2002, 01:14:00 UTC |
| Rocket | Proton-K / Blok DM-2M |
| Launch site | Baikonur, Site 200/39 |
| Contractor | Khrunichev State Research and Production Space Center |
| Entered service | August 2002 |
| End of mission | |
| Disposal | Graveyard orbit |
| Deactivated | January 2020 |
| Orbital parameters | |
| Reference system | Geocentric orbit |
| Regime | Geostationary orbit |
| Longitude | 40° West (2002–2005) 14° West (2005–2015) 145° East (2016–2020) |
| Transponders | |
| Band | 17 transponders: 12 C-band 5 Ku-band |
| Coverage area | Russia |
Ekspress constellation | |
Satellite
The launch was contracted by Khrunichev State Research and Production Space Center, and used a Proton-K / Blok DM-2M launch vehicle flying from Site 200/39 at the Baikonur Cosmodrome.[1]
Launch
Ekspress-A4 is a Russian geosynchronous communications spacecraft that was launched on 10 June 2002 from Baikonur by a Proton-K launch vehicle at 01:14:00 UTC.[2] The 2,600 kg (5,700 lb) spacecraft carries 12 transponders in C-band and five in Ku-band to provide voice, data, and video communications in Russia.[3]
Mission
It is part of the Ekspress network of satellites. Following its launch and on-orbit testing, it was placed in geostationary orbit at 40° West, from where it provides communications services to Russia.[4] It is equipped with seventeen transponders. In January 2020, the satellite was retired and moved to a graveyard orbit above the geostationary orbit.
References
- Krebs, Gunter (19 May 2020). "Ekspress-A1, -A2, -A3". Gunter's Space Page. Retrieved 22 April 2021.
- "Issue 481". Jonathan's Space Report. 13 June 2002. Retrieved 22 April 2021.
- "Express-4A". Satellite News Digest. 23 January 2020. Retrieved 22 April 2021.
- "Express A1R". LyngSat. Archived from the original on 19 June 2009. Retrieved 22 April 2021.
Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
WikiSort.org - проект по пересортировке и дополнению контента Википедии