| Names | Navstar 2-03 GPS II-3 GPS SVN-16 |
|---|---|
| Mission type | Navigation |
| Operator | U.S. Air Force |
| COSPAR ID | 1989-064A |
| SATCAT no. | 20185 |
| Mission duration | 7.5 years (planned) 11 years (achieved) |
| Spacecraft properties | |
| Spacecraft | GPS II |
| Spacecraft type | GPS Block II[1] |
| Manufacturer | Rockwell International |
| Launch mass | 840 kg (1,850 lb) [2] |
| Dimensions | 5.3 m (17 ft) of long |
| Power | 710 watts |
| Start of mission | |
| Launch date | 18 August 1989, 05:57:59 UTC |
| Rocket | Delta II 6925-9.5 (Delta D186) [3] |
| Launch site | Cape Canaveral, LC-17A |
| Contractor | McDonnell Douglas |
| Entered service | September 1989 |
| End of mission | |
| Deactivated | 13 October 2000 |
| Orbital parameters | |
| Reference system | Geocentric orbit[4] |
| Regime | Medium Earth orbit (Semi-synchronous) |
| Slot | ? |
| Perigee altitude | 20,113 km (12,498 mi) |
| Apogee altitude | 20,246 km (12,580 mi) |
| Inclination | 54.9° |
| Period | 717.86 minutes |
USA-42, also known as GPS II-3 and GPS SVN-16, was an American navigation satellite which formed part of the Global Positioning System. It was the third of nine Block II GPS satellites to be launched, which were the first operational GPS satellites to be placed into orbit.
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