| Names | Navstar 9 GPS I-9 GPS SVN-9 |
|---|---|
| Mission type | Navigation Technology |
| Operator | U.S. Air Force |
| COSPAR ID | 1984-059A |
| SATCAT no. | 15039 |
| Mission duration | 5 years (planned) 10 years (achieved) |
| Spacecraft properties | |
| Spacecraft | Navstar |
| Spacecraft type | GPS Block I |
| Manufacturer | Rockwell Space Systems |
| Launch mass | 758 kg (1,671 lb) |
| Dimensions | 5.3 meters of long |
| Power | 400 watts |
| Start of mission | |
| Launch date | 13 June 1984, 11:37 UTC |
| Rocket | Atlas E / SGS-2 (Atlas-42E) |
| Launch site | Vandenberg, SLC-3W |
| Contractor | Convair General Dynamics |
| Entered service | 19 July 1984 |
| End of mission | |
| Deactivated | 20 June 1994 |
| Orbital parameters | |
| Reference system | Geocentric orbit[1] |
| Regime | Medium Earth orbit (Semi-synchronous) |
| Perigee altitude | 19,917 km (12,376 mi) |
| Apogee altitude | 20,446 km (12,705 mi) |
| Inclination | 62.80° |
| Period | 718.00 minutes |
USA-1, also known as Navstar 9, GPS I-9 and GPS SVN-9, was an American navigation satellite launched in 1984 as part of the Global Positioning System development programme. It was the ninth of eleven Block I GPS satellites to be launched,[2] and the first satellite to receive a USA designation.
- ^ "Trajectory: Navstar 9 1984-059A". NASA. 14 May 2020. Retrieved 21 November 2020.
This article incorporates text from this source, which is in the public domain.
- ^ Cite error: The named reference
GSPwas invoked but never defined (see the help page).
