SBS 4

SBS 4
SBS 4 in the space
Mission typeCommunications
OperatorSBS
COSPAR ID1984-093B[1]
SATCAT no.15235
Mission duration7 years design life
Spacecraft properties
BusHS-376
ManufacturerHughes Space and Communications
Launch mass1,117 kilograms (2,463 lb)
Start of mission
Launch date30 August 1984, 12:41:50 (1984-08-30UTC12:41:50Z) UTC
RocketSpace Shuttle Discovery STS-41D
Launch siteKennedy LC-39A
ContractorNASA
End of mission
DisposalDecommissioned
DeactivatedSeptember 29, 2005 (2005-09-30)
Orbital parameters
Reference systemGeocentric
RegimeGeostationary
Longitude94° W[2]
Eccentricity0.72775
Perigee altitude317 kilometres (197 mi)
Apogee altitude36,137 kilometres (22,454 mi)
Inclination23°
Period640.2 minutes
EpochAugust 30, 1984
Transponders
Band14 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

  1. ^ "SBS 4". NASA Space Science Data Coordinated Archive. Retrieved 2017-04-29.
  2. ^ "SBS 4". n2yo.com. Retrieved 2017-04-29.
  3. ^ 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.
  4. ^ "SBS 4". NASA Space Science Data Coordinated Archive. Retrieved 2017-04-29.

See also


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