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astronautix.com Intelsat 4A

Intelsat 4A
Intelsat 4A -

Credit: Intelsat. 21,290 bytes. 239 x 366 pixels.



Class: Communications. Nation: International. Agency: ITSO . Manufacturer: Hughes.

Intelsat 4A satellites increased satellite capacity to 7250 voice circuits or 2 TV channels. Spacecraft: Spin stabilised with a despun antenna structure. Hydrazine propulsion system. Passive thermal control. Body mounted solar cells. Payload: Twenty transponders. Multiple access.7250 voice circuits or 2 TV channels.


Specification

Design Life: 7 years. Total Length: 6.8 m. Maximum Diameter: 2.4 m. Total Mass: 1,520 kg.


Intelsat 4A Chronology


26 September 1975 Intelsat 4A F-1 Program: Intelsat. Launch Site: Cape Canaveral . Launch Vehicle: Atlas Centaur SLV-3D. Mass: 1,500 kg. Perigee: 35,860 km. Apogee: 35,910 km. Inclination: 8.9 deg.

Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit


29 January 1976 Intelsat 4A F-2 Program: Intelsat. Launch Site: Cape Canaveral . Launch Vehicle: Atlas Centaur SLV-3D. Mass: 1,500 kg. Perigee: 35,924 km. Apogee: 35,981 km. Inclination: 9.0 deg.

Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit


13 May 1976 Comstar 1 Program: Comstar. Launch Site: Cape Canaveral . Launch Vehicle: Atlas Centaur SLV-3D. Mass: 792 kg. Perigee: 35,867 km. Apogee: 35,878 km. Inclination: 8.7 deg.

Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit


22 July 1976 Comstar 2 Program: Comstar. Launch Site: Cape Canaveral . Launch Vehicle: Atlas Centaur SLV-3D. Mass: 792 kg. Perigee: 35,764 km. Apogee: 35,812 km. Inclination: 8.6 deg.

Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit


26 May 1977 Intelsat 4A F-4 Program: Intelsat. Launch Site: Cape Canaveral . Launch Vehicle: Atlas Centaur SLV-3D. Mass: 1,500 kg. Perigee: 35,969 km. Apogee: 36,075 km. Inclination: 7.8 deg.

Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit


30 September 1977 Intelsat IVA F-5 Program: Intelsat. Launch Site: Cape Canaveral . Launch Vehicle: Atlas Centaur SLV-3D. FAILURE: Atlas failure - gas generator hot gas leak. Mass: 1,500 kg.
07 January 1978 Intelsat 4A F-3 Program: Intelsat. Launch Site: Cape Canaveral . Launch Vehicle: Atlas Centaur SLV-3D. Mass: 1,511 kg. Perigee: 35,874 km. Apogee: 35,909 km. Inclination: 7.2 deg.

Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit


31 March 1978 Intelsat 4A F-6 Program: Intelsat. Launch Site: Cape Canaveral . Launch Vehicle: Atlas Centaur SLV-3D. Mass: 826 kg. Perigee: 35,739 km. Apogee: 35,797 km. Inclination: 7.3 deg.

Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit


29 June 1978 Comstar 3 Program: Comstar. Launch Site: Cape Canaveral . Launch Vehicle: Atlas Centaur SLV-3D. Mass: 1,520 kg. Perigee: 36,000 km. Apogee: 36,183 km. Inclination: 7.1 deg.

US domestic telephone service. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit


21 February 1981 Comstar 4 Program: Comstar. Launch Site: Cape Canaveral . Launch Vehicle: Atlas Centaur SLV-3D. Mass: 1,520 kg. Perigee: 35,783 km. Apogee: 35,792 km. Inclination: 7.2 deg.

Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit



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Last update 12 March 2001.
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