Tags: Artificialsatellite, Satellite.
USA-91 also known as GPS IIA-11 GPS II-20 and GPS SVN-37 was an American navigation satellite which formed part of the Global Positioning System. It was the eleventh of nineteen Block IIA GPS satellites to be launched.USA-91 was launched at 00:07:00 UTC on 13 May 1993 atop a Delta II carrier rocket flight number D220 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-91 into a transfer orbit.
