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Star One B4 information


Star One B4
Mission typeCommunication
OperatorEmbratel
Star One
COSPAR ID2000-046A Edit this at Wikidata
SATCAT no.26469
Mission duration12 years
Spacecraft properties
BusHS-376W
ManufacturerHughes
Launch mass2,495 kilograms (5,501 lb)
Dry mass1,757 kilograms (3,874 lb)
Start of mission
Launch date17 August 2000 (2000-08-17), 23:16:00 UTC
RocketAriane 44LP-3
Launch siteKourou ELA-2
ContractorArianespace
End of mission
DeactivatedJune 2021 (2021-07)
Orbital parameters
Reference systemGeocentric
RegimeGeostationary
Longitude75° West / 92° West / 70° West / 84° West
Semi-major axis42,165.0 kilometres (26,200.1 mi)
Perigee altitude35,782.3 kilometres (22,234.1 mi)
Apogee altitude35,806.1 kilometres (22,248.9 mi)
Inclination
Period1,436.1 minutes
Transponders
Band28 IEEE C-band (NATO G/H-band)
 

Star One B4, originally designated Brasilsat B4, is a Brazilian communications satellite which is operated by Star One. It was constructed by the Hughes Space and Communications Company, and is based on the HS-376W satellite bus. It was the penultimate HS-376, and final HS-376W to be launched. Its launch was contracted by Arianespace, using an Ariane 4 44LP-3 carrier rocket. The launch occurred at 23:16 GMT on 17 August 2000, from the ELA-2 launch pad at the Guiana Space Centre. The Nilesat 102 satellite was launched on the same rocket.

It was originally built and launched as Brasilsat B4 for Embratel, and was later transferred to Embratel's subsidiary Star One and renamed. Following its launch it raised itself into geostationary orbit by means of its onboard R-4D apogee motor, and was positioned at 75° West for on-orbit testing. This was completed in September 2000, and it was moved to 92° West, arriving in October. It remained at that position until January 2007 when it was relocated to 70° West. It arrived on station in February, and subsequently departed in June 2008. In July 2008 it arrived at 84° West, where it is currently stationed. It carries twenty eight transponders, and has an expected on-orbit lifespan of 12 years. It initially replaced the Brasilsat A2 satellite.

and the end of satellite Brasilsat B4 was moved to junk orbit in June 2021.[1]

  1. ^ "TSE - Brasilsat B4". www.tbs-satellite.com. Retrieved 2023-02-11.

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