USA-195
USA-195, or Wideband Global Satcom 1 (WGS-1) is an American military communications satellite operated by the United States Air Force as part of the Wideband Global Satcom programme. Launched in 2007, it was the first WGS satellite to reach orbit. It is stationed at a longitude of 174.8° east.[3]
 Artist's impression of a WGS satellite in orbit | |
| Mission type | Communications |
|---|---|
| Operator | US Air Force |
| COSPAR ID | 2007-046A |
| SATCAT no. | 32258 |
| Mission duration | 14 years |
| Spacecraft properties | |
| Spacecraft type | WGS Block I |
| Bus | BSS-702 |
| Manufacturer | Boeing |
| Launch mass | 5,987 kilograms (13,199 lb) |
| Start of mission | |
| Launch date | 11 October 2007, 00:22 UTC[1] |
| Rocket | Atlas V 421 |
| Launch site | Cape Canaveral SLC-41 |
| Contractor | United Launch Alliance |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Geostationary |
| Longitude | 174.8° east |
| Semi-major axis | 42,164.31 kilometers (26,199.69 mi) |
| Eccentricity | 0.0000934 |
| Perigee altitude | 35,789 kilometers (22,238 mi) |
| Apogee altitude | 35,797 kilometers (22,243 mi) |
| Inclination | 0.10 degrees |
| Period | 23.93 hours |
| Epoch | 1 January 2013, 00:00:00 UTC[2] |
 | |
Built by Boeing, USA-195 is based on the BSS-702 satellite bus. It had a mass at launch of 5,987 kilograms (13,199 lb), and was expected to operate for fourteen years. The spacecraft is equipped with two solar arrays to generate power for its communications payload, which consists of cross-band X and Ka band transponders. Propulsion is provided by an R-4D-15 apogee motor, with four XIPS-25 ion engines for stationkeeping.[4]
USA-195 was launched by United Launch Alliance, who placed it into orbit using an Atlas V rocket flying in the 421 configuration. The launch took place from Space Launch Complex 41 at the Cape Canaveral Air Force Station, with liftoff occurring at 00:22 UTC on 11 October 2007.[1] The launch was successful, placing the satellite into a geosynchronous transfer orbit, from which the spacecraft raised itself into geostationary orbit using its onboard propulsion systems. The satellite was designated USA-195 under the US military's designation system, and received the International Designator 2007-046A and Satellite Catalog Number 32258.[5][6]
References
- McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 11 November 2013.
- Peat, Chris (1 January 2013). "WGS F1 (USA 195) - Orbit". Heavens Above. Retrieved 11 November 2013.
- Graham, William (24 May 2013). "ULA Delta IV successfully lofts WGS-5 satellite". NASASpaceFlight.com. Retrieved 12 November 2013.
- Krebs, Gunter. "WGS 1, 2, 3, 4, 5, 6, 7, 8, 9, 10". Gunter's Space Page. Retrieved 11 November 2013.
- McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 11 November 2013.
- "UCS Satellite Database". Union of Concerned Scientists. 1 September 2013. Retrieved 11 November 2013.