JCSAT-4A
NamesJCSAT-6 (order to Feb 1999)
JCSAT-4A (Feb 1999 onward)
Mission typeCommunications
OperatorSKY Perfect JSAT Group
COSPAR ID1999-006A
SATCAT no.25630
Mission duration14.5 years (planned)
24 years, 10 months and 12 days (elasped)
Spacecraft properties
SpacecraftJCSAT-6
Spacecraft typeJCSAT
BusHS-601
ManufacturerHughes
Launch mass2,900 kilograms (6,400 lb)
Start of mission
Launch date16 February 1999, 01:45:26 UTC
RocketAtlas IIAS (AC-152)
Launch siteCape Canaveral, LC-36A
ContractorInternational Launch Services (ILS)
Orbital parameters
Reference systemGeocentric orbit
RegimeGeostationary orbit
Longitude124° East
Transponders
Band32 Ku band
Coverage areaJapan
 

JCSAT-4A, designated JCSAT-6 before launch, is a Japanese geostationary communications satellite which is operated by JSAT Corporation (now SKY Perfect JSAT Group). It is positioned in geostationary orbit at a longitude of 124° East, from where it is used to provide broadcasting and corporate network communications to Japan.[1]

Spacecraft description

JCSAT-6 was constructed by Hughes, based on the HS-601 satellite bus. It is equipped with 32 Ku-band transponders, and at launch it had a mass of 2,900 kg (6,400 lb), with an expected operational lifespan of fourteen and a half years.[2][3]

Launch

It was launched atop an Atlas IIAS launch vehicle flying from Launch Complex 36A at the Cape Canaveral Air Force Station. The launch occurred at 01:45:26 UTC on 16 February 1999,[4] and successfully placed JCSAT-6 into a geostationary transfer orbit. From this orbit, the satellite raised itself into a geostationary orbit using an R-4D apogee motor.[5] The final burn to complete its insertion into geosynchronous orbit occurred on 1 March 1999.[6]

See also

References

  1. "JCSAT-4A". Sky Perfect JSAT. Archived from the original on 13 July 2009. Retrieved 8 August 2009.
  2. "UCS Satellite Database". Union of Concerned Scientists. 1 July 2009. Retrieved 8 August 2009.
  3. Krebs, Gunter. "JCSat 5, 6". Gunter's Space Page. Retrieved 8 August 2009.
  4. McDowell, Jonathan (14 March 2021). "Launch Log". Jonathan's Space Report. Retrieved 20 March 2021.
  5. Wade, Mark. "JCSAT". Encyclopedia Astronautica. Archived from the original on 29 August 2002. Retrieved 8 August 2009.
  6. McDowell, Jonathan. "Index". Geostationary Orbit Catalog. Jonathan's Space Report. Archived from the original on 6 April 2010. Retrieved 8 August 2009.


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