USA-10
| Mission type | Navigation Technology |
|---|---|
| Operator | US Air Force |
| COSPAR ID | 1985-093A[1] |
| SATCAT № | 16129[1] |
| Mission duration | 5 years (planned) 8 1⁄2 years (achieved) |
| Spacecraft properties | |
| Spacecraft type | GPS Block I |
| Manufacturer | Rockwell[2] |
| Launch mass | 759 kilograms (1,673 lb)[2] |
| Start of mission | |
| Launch date | 9 October 1985, 02:53 UTC |
| Rocket | Atlas E/F SGS-2, 55E[3] |
| Launch site | Vandenberg SLC-3W[3] |
| End of mission | |
| Deactivated | 14 April 1994 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Medium Earth (Semi-synchronous) |
| Perigee | 19,821 kilometres (12,316 mi)[4] |
| Apogee | 20,542 kilometres (12,764 mi)[4] |
| Inclination | 63.3 degrees[4] |
| Period | 717.94 minutes[4] |
USA-10, also known as Navstar 11, GPS I-11 and GPS SVN-11, was an American navigation satellite launched in 1985 as part of the Global Positioning System development programme. It was the last of eleven Block I GPS satellites to be launched.[2]
USA-10 was launched at 02:53 UTC on 9 October 1985, atop an Atlas E/F carrier rocket with an SGS-2 upper stage. The Atlas used had the serial number 55E, and was originally built as an Atlas E.[3] The launch took place from Space Launch Complex 3W at Vandenberg Air Force Base,[5] and placed USA-10 into a transfer orbit. The satellite raised itself into medium Earth orbit using a Star-27 apogee motor.[2]
By 8 November 1985, USA-10 had been raised to an orbit with a perigee of 19,821 kilometres (12,316 mi), an apogee of 20,542 kilometres (12,764 mi), a period of 717.94 minutes, and 63.3 degrees of inclination to the equator.[4] The satellite had a design life of 5 years and a mass of 758 kilograms (1,671 lb).[2] It broadcast the PRN 03 signal in the GPS demonstration constellation, and was retired from service on 14 April 1994.
References
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