Mission type Navigation COSPAR ID 1989-013A Mission duration 7.5 years (planned) Inclination 55.1° Period 12 hours Launch mass 840 kg Rocket Delta II | Operator US Air Force SATCAT no. 19802 Spacecraft type GPS Block II Inclination 55.1° Launch mass 840 kg Launch date 14 February 1989 | |
USA-35, also known as GPS II-1 and GPS SVN-14, was an American navigation satellite which formed part of the Global Positioning System. It was the first of nine Block II GPS satellites to be launched, which were the first operational GPS satellites to be launched.
USA-35 was launched at 18:30 UTC on 14 February 1989, atop a Delta II carrier rocket, flight number D184, flying in the 6925 configuration. This was the maiden flight of the Delta II. The launch took place from Launch Complex 17A at the Cape Canaveral Air Force Station, and placed USA-35 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-37XFP apogee motor.
On 16 March 1989, USA-35 was in an orbit with a perigee of 19,858 kilometres (12,339 mi), an apogee of 20,270 kilometres (12,600 mi), a period of 713.2 minutes, and 55.1 degrees of inclination to the equator. The satellite had a mass of 840 kilograms (1,850 lb), and generated 710 watts of power. It had a design life of 7.5 years; however, it operated until 26 March 2000, when its reaction wheels failed. It was decommissioned on 14 April 2000, having been replaced by USA-150.