A Block IIA GPS satellite
|Operator||US Air Force|
|Bus||GPS Block IIA|
|Launch date||26 June 1993, 13:27:00UTC|
|Carrier rocket||Delta II 7925-9.5 D221|
|Launch site||Cape Canaveral LC-17A|
|Mission duration||7.5 years (planned)|
|Mass||1,816 kilograms (4,000 lb)|
|Regime||Semisynchronous medium Earth|
|Apoapsis||20,244 kilometres (12,579 mi)|
|Periapsis||20,120 kilometres (12,500 mi)|
|Orbital period||717.96 minutes|
USA-92, also known as GPS IIA-12, GPS II-21 and GPS SVN-39, is an American navigation satellite which forms part of the Global Positioning System. It was the twelfth of nineteen Block IIA GPS satellites to be launched.
USA-92 was launched at 13:27:00 UTC on 26 June 1993, atop a Delta II carrier rocket, flight number D221, flying in the 7925-9.5 configuration. The launch took place from Launch Complex 17A at the Cape Canaveral Air Force Station, and placed USA-92 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37XFP apogee motor.
On 27 July 1993, USA-92 was in an orbit with a perigee of 20,120 kilometres (12,500 mi), an apogee of 20,244 kilometres (12,579 mi), a period of 717.96 minutes, and 54.7 degrees of inclination to the equator. It broadcasts the PRN 09 signal, and operates in slot 1 of plane A of the GPS constellation. The satellite has a mass of 1,816 kilograms (4,000 lb). It had a design life of 7.5 years, however as of 2012 it remains in service. It is expected to be replaced by the GPS IIF-3 satellite, scheduled for launch in October 2012.
- Krebs, Gunter. "GPS-2A (Navstar-2A)". Gunter's Space Page. Retrieved 10 July 2012.
- McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 10 July 2012.
- "Navstar 2A-12". US National Space Science Data Center. Retrieved 10 July 2012.
- McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 10 July 2012.
- McDowell, Jonathan. "Launch List". Launch Vehicle Database. Jonathan's Space Page. Retrieved 10 July 2012.
- Wade, Mark. "Navstar". Encyclopedia Astronautica. Retrieved 10 July 2012.
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