A Block IIA GPS satellite
|Operator||US Air Force|
|Mission duration||7.5 years (planned)
19.6 years (achieved)
|Spacecraft type||GPS Block IIA|
|Launch mass||1,816 kilograms (4,004 lb)|
|Start of mission|
|Launch date||30 August 1993, 12:38:00UTC|
|Rocket||Delta II 7925-9.5, D222|
|Launch site||Cape Canaveral LC-17B|
|End of mission|
|Deactivated||01 May 2013, 22:00:00UTC|
|Perigee||20,109 kilometres (12,495 mi)|
|Apogee||20,257 kilometres (12,587 mi)|
USA-94, also known as GPS IIA-13, GPS II-22 and GPS SVN-35, was an American navigation satellite which formed part of the Global Positioning System. It was the thirteenth of nineteen Block IIA GPS satellites to be launched.
USA-94 was launched at 12:38:00 UTC on 30 August 1993, atop a Delta II carrier rocket, flight number D222, flying in the 7925-9.5 configuration. The launch took place from Launch Complex 17B at the Cape Canaveral Air Force Station, and placed USA-94 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37XFP apogee motor.
On 1 October 1993, USA-94 was in an orbit with a perigee of 20,109 kilometres (12,495 mi), an apogee of 20,257 kilometres (12,587 mi), a period of 718 minutes, and 54.8 degrees of inclination to the equator. It broadcast the PRN 30 signal, and operated in slot 4, and later 5, of plane B of the GPS constellation. The satellite had a mass of 1,816 kilograms (4,004 lb) and a design life of 7.5 years. It was decommissioned on 1 May 2013, after almost 20 years in orbit.
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- 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.
- "NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2013027". United States Coast Guard. Retrieved 3 May 2013.
- 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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