![]() SBS 4 in the space | |
Mission type | Communications |
---|---|
Operator | SBS |
COSPAR ID | 1984-093B[1] |
SATCAT no. | 15235 |
Mission duration | 7 years design life |
Spacecraft properties | |
Bus | HS-376 |
Manufacturer | Hughes Space and Communications |
Launch mass | 1,117 kilograms (2,463 lb) |
Start of mission | |
Launch date | 30 August 1984, 12:41:50 | UTC
Rocket | Space Shuttle Discovery STS-41D |
Launch site | Kennedy LC-39A |
Contractor | NASA |
End of mission | |
Disposal | Decommissioned |
Deactivated | September 29, 2005 |
Orbital parameters | |
Reference system | Geocentric |
Regime | Geostationary |
Longitude | 94° W[2] |
Eccentricity | 0.72775 |
Perigee altitude | 317 kilometres (197 mi) |
Apogee altitude | 36,137 kilometres (22,454 mi) |
Inclination | 23° |
Period | 640.2 minutes |
Epoch | August 30, 1984 |
Transponders | |
Band | 14 Ku band |
SBS 4 was a geostationary communications satellite designed and manufactured by Hughes (now Boeing) on the HS-376 platform. It was ordered by Satellite Business Systems, which later sold it to Hughes Communications. It had a Ku band payload and operated at 94°W longitude.[3]
Satellite description
The spacecraft was designed and manufactured by Hughes on the HS-376 satellite bus. It had a launch mass of 1,117 kg (2,463 lb), a geostationary orbit and a 7-year design life.[4]
History
On August 30, 1984, SBS 4 was launched by Space Shuttle Discovery in the mission STS-41D from Kennedy Space Center at 12:41:50 UTC. The satellite was launched along with the satellites Telstar 302 and Leasat 2.
On 29 September 2005, SBS 4 was finally decommissioned and put into a graveyard orbit.[3]
References
- ^ "SBS 4". NASA Space Science Data Coordinated Archive. Retrieved 2017-04-29.
- ^ "SBS 4". n2yo.com. Retrieved 2017-04-29.
- ^ a b Krebs, Gunter Dirk. "SBS 1, 2, 3, 4, 5 / HGS 5 - Gunter's Space Page". Gunter's Space Page. Retrieved 2017-04-29.
- ^ "SBS 4". NASA Space Science Data Coordinated Archive. Retrieved 2017-04-29.
See also