Intelsat 804
Intelsat 804 was a communications satellite operated by Intelsat. Launched in 1997 it was operated in geostationary orbit at a longitude of 44 degrees east for around 8 years.
| Mission type | Communications |
|---|---|
| Operator | Intelsat |
| COSPAR ID | 1997-083A |
| SATCAT no. | 25110 |
| Mission duration | 14 years (planned) |
| Spacecraft properties | |
| Spacecraft type | AS-7000 |
| Manufacturer | Lockheed Martin |
| Launch mass | 3,412 kilograms (7,522 lb) |
| Start of mission | |
| Launch date | December 22, 1997, 00:16 UTC[1] |
| Rocket | Ariane-42L H10-3 |
| Launch site | Kourou ELA-2 |
| Contractor | Arianespace |
| End of mission | |
| Deactivated | January 14, 2005, 22:32 UTC |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Geostationary Now supersynchronous |
| Longitude | 44° E |
| Semi-major axis | 42,169.0 kilometres (26,202.6 mi)[2] |
| Perigee altitude | 35,776.2 kilometres (22,230.3 mi)[2] |
| Apogee altitude | 35,820.4 kilometres (22,257.8 mi)[2] |
| Inclination | 9.7 degrees[2] |
| Period | 1,436.3 minutes[2] |
| Epoch | May 5, 2017[2] |
| Transponders | |
| Band | 38 C Band, 6 Ku band |
| Coverage area | Indian Ocean |
Intelsat 8 | |
Satellite
The fourth of six Intelsat VIII satellites to be launched, Intelsat 804 was built by Lockheed Martin. It was a 3,412-kilogram (7,522 lb) spacecraft. The satellite carried a 2xLEROS-1B apogee motor for propulsion and was equipped with 38 C Band transponders and 6 Ku band transponders, powered by 2 solar cells more batteries.[3] It was designed for a fourteen-year service life.[4]
Launch
The launch of Intelsat 804 made use of an Ariane 4 rocket flying from Guiana Space Centre, Kourou, French Guiana. The launch took place at 00:116 UTC on December 22, 1997, with the spacecraft entering a geosynchronous transfer orbit.[1] The satellite subsequently fired its apogee motor to achieve geostationary orbit.
Failure
On 14 January 2005 at 22:32 UTC, there was a failure of the power system.[5]
See also
References
- McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved May 5, 2017.
- "INTELSAT 804". N2YO. Retrieved May 5, 2017.
- Wade, Mark. "Intelsat". Encyclopedia Astronautica. Retrieved May 5, 2017.
- Krebs, Gunter. "Intelsat-8 (801, 802, 803, 804) / NSS 803 → NSS 5". Gunter's Space Page. Retrieved May 5, 2017.
- TSE-Intelsat 804. Retrieved 2017-5-05.