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AMC 21

AMC 21 [OSC]

Alcatel Alenia Space announced in April 2006 that it has signed a contract to build a new powerful telecommunications satellite for the U.S. operator SES AMERICOM, an SES GLOBAL company (Luxembourg and Paris Euronext exchanges: SESG). Beginning in mid-2008, the AMC-21 satellite will transmit programming to PBS (Public Broadcasting Service) affiliated television stations throughout the Continental United States (CONUS), Alaska, Hawaii and Caribbean regions, expand occasional resources for broadcasters, and support enterprise communications networks.

As prime contractor, Alcatel Alenia Space will have overall responsibility for the implementation of the AMC-21 program, being in charge of the design, manufacturing, test and delivery on the ground of the AMC-21 satellite, along with Launch and Early Operations Phase (LEOP), In-Orbit Test (IOT) support and associated services. Alcatel Alenia Space will also provide the communications payload.

Orbital Sciences Corporation (Orbital), as a subcontractor of Alcatel Alenia Space, will provide its small sized GEO spacecraft platform, Star-2. Alcatel Alenia Space will be responsible for integrating the Orbital bus into the fully assembled satellite. AMC-21 will be fitted with 24 Ku-band transponders, each 36 MHz in bandwidth and will have an operational life time exceeding 16 years. Weighing about 2,500 kilograms at launch and having 6 kW of electrical power, it will operate from 125°West longitude.

Nation: USA
Type / Application: Communication
Operator: SES Americom
Contractors: Alcatel Alenia Space (prime), Orbital Sciences Corporation (OSC) (bus)
Equipment: 24 Ku-band transponders
Configuration: Star-2 Bus
Propulsion: IHI BT-4
Power: 2 deployable solar arrays, batteries
Lifetime: 16 years
Mass: 2473 kg (1161 kg dry)
Orbit: GEO
Satellite COSPAR Date LS Launch Vehicle Remarks
AMC 21 2008-038B 14.08.2008 Ko ELA-3 Ariane-5ECA with Superbird 7


  • Orbital Sciences Corp.: AMC-21
Further GE / AMC / AAP missions:

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