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astronautix.com AS 5000


Class: Communications. Nation: Europe. Agency: SES. Manufacturer: Lockheed Martin.

3-axis stabilisation with momentum wheels, magnetic torquers, Earth sensors and 20 blowdown monopropellant hydrazine thrusters. Two solar arrays provide 4850 W BOL, 4 50 Ahr NiH batteries. GEO insertion provided by 2 500N bipropellant motors. 16 Ku-band transponders (with six spares)


Specification

Total Length: 2.8 m. Maximum Diameter: 2.2 m. Total Mass: 2,862 kg.


AS 5000 Chronology


02 March 1991 Astra 1B Program: Astra. Launch Site: Kourou . Launch Vehicle: Ariane 44LP. Mass: 2,620 kg. Perigee: 35,760 km. Apogee: 35,811 km. Inclination: 0.0 deg.

Stationed at 19.2 deg E; European coverage. Astra 1B provides TV coverage to Western Europe. The satellite is owned and operated by Société Europíenne des Satellites (SES), a private company formed in 1985. Astra 1B is the second in a network of four satellites. SES acquired Astra 1B from DBS Crimson Satellite Associates while still under construction by GE Astro Space (as Satcom K3). Astra 1B is colocated with Astra 1A, and doubled the number of channels provided by the Astra network. Spacecraft: GE 5000 platform.3-axis stabilisation with momentum wheels, magnetic torquers, Earth sensors and 20 blowdown monopropellant hydrazine thrusters. Solar arrays provide 4850 W BOL, 4 50 Ahr NiH batteries. GEO insertion provided by 2 500N bipropellant motors. Payload: 16 Ku-band transponders (with six spares)


04 April 1991 Anik E2 Program: Anik. Launch Site: Kourou . Launch Vehicle: Ariane 44P. Mass: 2,923 kg. Perigee: 35,776 km. Apogee: 35,798 km. Inclination: 0.1 deg.

Canadian communications; 107.3 deg W.


26 September 1991 Anik E1 Program: Anik. Launch Site: Kourou . Launch Vehicle: Ariane 44P. Mass: 2,977 kg. Perigee: 35,777 km. Apogee: 35,797 km. Inclination: 0.0 deg.

Stationed at 111.1 deg W.


10 June 1992 Intelsat K Program: Intelsat. Launch Site: Cape Canaveral . Launch Vehicle: Atlas IIA. Mass: 2,928 kg. Perigee: 35,781 km. Apogee: 35,793 km. Inclination: 0.1 deg.

Stationed at 21.5 deg W. Intelsat K is a single spacecraft purchased to meet critical requirements for Ku-band capacity over the Atlantic region, driven primarily by international broadcasters. The satellite was purchased from GE Americom while under construction (as Satcom K4) and required extensive payload modifications. Spacecraft: Based on GE 5000 series bus.3-axis stabilised using magnetotorquers. Hydrazine propulsion system. Two large solar panels with 1-axis articulation provide 4800 W BOL.4 50 Ahr NiH batteries. Payload: 16 Ku-band transponders which can be configured into 32 high quality television channels. Permits access from ground antennas 1.2 meters dia. and smaller. Launch vehicle put payload into geosynchronous transfer orbit with GCS trajectory option.



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Last update 12 March 2001.
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