| Mission type | Communication |
|---|---|
| Operator | Embratel Star One |
| COSPAR ID | 2000-046A |
| SATCATno. | 26469 |
| Mission duration | 12 years |
| Spacecraft properties | |
| Bus | HS-376W |
| Manufacturer | Hughes |
| Launch mass | 2,495 kilograms (5,501 lb) |
| Dry mass | 1,757 kilograms (3,874 lb) |
| Start of mission | |
| Launch date | 17 August 2000 (2000-08-17), 23:16:00 UTC |
| Rocket | Ariane 44LP-3 |
| Launch site | KourouELA-2 |
| Contractor | Arianespace |
| End of mission | |
| Deactivated | June 2021 (2021-07) |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Geostationary |
| Longitude | 75° West / 92° West / 70° West / 84° West |
| Semi-major axis | 42,165.0 kilometres (26,200.1 mi) |
| Perigee altitude | 35,782.3 kilometres (22,234.1 mi) |
| Apogee altitude | 35,806.1 kilometres (22,248.9 mi) |
| Inclination | 1° |
| Period | 1,436.1 minutes |
| Transponders | |
| Band | 28IEEEC-band (NATOG/H-band) |
Star One B4, originally designatedBrasilsat B4, is a Braziliancommunications satellite which is operated byStar One. It was constructed by theHughes Space and Communications Company, and is based on theHS-376Wsatellite bus. It was the penultimateHS-376, and final HS-376W to be launched. Its launch was contracted byArianespace, using anAriane 4 44LP-3 carrier rocket. The launch occurred at 23:16 GMT on 17 August 2000, from theELA-2 launch pad at theGuiana Space Centre. TheNilesat 102 satellite was launched on the same rocket.
It was originally built and launched as Brasilsat B4 forEmbratel, and was later transferred to Embratel's subsidiary Star One and renamed. Following its launch it raised itself intogeostationary orbit by means of its onboardR-4Dapogee 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 theBrasilsat A2 satellite.
and the end ofsatelliteBrasilsat B4 was moved tojunk orbit in June 2021.[1]
 | This article about one or morecommunications satellites is astub. You can help Wikipedia byexpanding it. |
