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From Wikipedia, the free encyclopedia

Mission typeCommunications
OperatorRussian Satellite Communications Company (RSCC)
COSPAR ID2004-015A
SATCAT no.28234
Mission duration12 years (planned)
1.75 years (achieve)
Spacecraft properties
Spacecraft typeKAUR
BusMSS-2500-GSO [1]
ManufacturerNPO PM (bus)
Alcatel Space (payload)
Launch mass2,542 kg (5,604 lb)
Dry mass590 kg (1,300 lb)
Power6 kW
Start of mission
Launch date26 April 2004, 20:37:00 UTC [3]
RocketProton-K / DM-2M
Launch siteBaikonur, Site 200/39
ContractorKhrunichev State Research and Production Space Center
Entered service1 July 2004 [2]
End of mission
DisposalGraveyard orbit
DeactivatedApril 2006
Orbital parameters
Reference systemGeocentric orbit [4]
RegimeGeostationary orbit
Longitude96.5° East (2004-2006)
Band30 transponders:
26 C-band
4 Ku-band
Coverage areaRussia, Southeast Asia, Australia

Ekspress-AM11 (Russian: Экспресс-АМ11, meaning Express-AM11) is a Russian communications satellite. It belongs to the Russian Satellite Communications Company (RSCC) based in Moscow, Russia.[5]

Satellite description

The satellite has a total of 30 transponders, 26 C-band and 4 Ku-band, for the domestic coverage of the Russian Federation.[5]


Ekspress-AM11 was launched by Khrunichev State Research and Production Space Center, using a Proton-K / DM-02 launch vehicle. The launch took place at 23:00:00 UTC on 28 December 2003, from Site 200/39 at Baikonur Cosmodrome, Kazakhstan.[3] Successfully deployed into geostationary transfer orbit (GTO), Ekspress-AM11 raised itself into an operational geostationary orbit using its apogee motor.


The satellite can be received in Southeast Asia, Australia and the most part of Russia. Ekspress-AM11 was hit on 28 March 2006 by either a micrometeorite or a piece of space debris, which lead to instantaneous depressurization of the thermal control system fluid circuit, followed by a sudden outburst of the heat-carrying agent. This resulted in a significant disturbing moment generation followed by the spacecraft orientation loss and rotation. After regaining control, the satellite was put into a graveyard orbit.[1]


  1. ^ a b "Ekspress-AM 11". Gunter's Space Page. 11 December 2017. Retrieved 22 April 2021.
  2. ^ "The project for renovation of RSCC satellite constellation by 2005". RSCC. 2005. Retrieved 23 April 2021.
  3. ^ a b "Launch Log". Jonathan's Space Report. 14 March 2021. Retrieved 22 April 2021.
  4. ^ "EXPRESS-AM11". Retrieved 22 April 2021.
  5. ^ a b "Interview with Yuri Izmaylov, RSCC Acting Director General". RSCC. 4 July 2005. Retrieved 22 April 2021.
This page was last edited on 27 April 2021, at 08:32
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