USA-178
US Air Force | |
| COSPAR ID | 2004-023A[1] |
|---|---|
| SATCAT no. | 28361[1] |
| Mission duration | 10 years (planned) 15 years 8 months (achieved) |
| Spacecraft properties | |
| Spacecraft type | GPS Block IIR[2] |
| Bus | AS-4000[2] |
| Manufacturer | Lockheed Martin[2] |
| Launch mass | 2,032 kilograms (4,480 lb)[2] |
| Start of mission | |
| Launch date | 23 June 2004, 22:54:00 UTC |
| Rocket | SLC-17B[3] |
| End of mission | |
| Deactivated | 2 March 2020 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Medium Earth (Semi-synchronous) |
| Perigee altitude | 20,089 kilometres (12,483 mi)[4] |
| Apogee altitude | 20,277 kilometres (12,600 mi)[4] |
| Inclination | 55 degrees[4] |
| Period | 718 minutes[4] |
USA-178, also known as GPS IIR-12 and GPS SVN-60, is an American
USA-178 was launched at 22:54:00 UTC on 23 June 2004, atop a
apogee motor.[2]
By 23 August 2004, USA-178 was in an orbit with a
inclination to the equator.[4] It is used to broadcast the PRN 23 signal, and operates in slot 4 of plane F of the GPS constellation. The satellite has a mass of 2,032 kilograms (4,480 lb), and a design life of 10 years.[2]
As of March 2020 it is no longer in service.
References
- ^ a b "Navstar 55". US National Space Science Data Center. Retrieved 11 July 2012.
- ^ a b c d e f g Krebs, Gunter. "GPS-2R (Navstar-2R)". Gunter's Space Page. Retrieved 11 July 2012.
- ^ a b c McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 11 July 2012.
- ^ a b c d e McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 11 July 2012.
- ^ McDowell, Jonathan. "Launch List". Launch Vehicle Database. Jonathan's Space Page. Retrieved 11 July 2012.
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