 A Block IIRM GPS satellite | |
| Mission type | Navigation |
|---|---|
| Operator | US Air Force |
| COSPAR ID | 2007-062A[1] |
| SATCATno. | 32384[1] |
| Mission duration | 10 years (planned) |
| Spacecraft properties | |
| Spacecraft type | GPS Block IIRM[2] |
| Bus | AS-4000[2] |
| Manufacturer | Lockheed Martin[2] |
| Launch mass | 2,032 kilograms (4,480 lb)[2] |
| Start of mission | |
| Launch date | 20 December 2007, 20:04:00 (2007-12-20UTC20:04Z) UTC |
| Rocket | Delta II 7925-9.5, D331[3] |
| Launch site | Cape CanaveralSLC-17A[3] |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Medium Earth (Semi-synchronous) |
| Perigee altitude | 20,082 kilometers (12,478 mi)[4] |
| Apogee altitude | 20,283 kilometers (12,603 mi)[4] |
| Inclination | 54.9 degrees[4] |
| Period | 717.98 minutes[4] |
USA-199, also known asGPS IIR-18(M),GPS IIRM-5 andGPS SVN-57, is an Americannavigation satellite which forms part of theGlobal Positioning System. It was the fifth of eightBlock IIRM satellites to be launched, and the eighteenth of twenty oneBlock IIR satellites overall. It was built byLockheed Martin, using theAS-4000satellite bus.[2]
USA-199 was launched at 20:04:00 UTC on 20 December 2007, atop aDelta II carrier rocket, flight number D331, flying in the 7925-9.5 configuration.[3] The launch took place fromSpace Launch Complex 17A at theCape Canaveral Air Force Station,[5] and placed USA-199 into a transfer orbit. The satellite raised itself intomedium Earth orbit using aStar-37FMapogee motor.[2]
By 15 February 2008, USA-199 was in an orbit with aperigee of 20,082 kilometers (12,478 mi), anapogee of 20,283 kilometers (12,603 mi), aperiod of 717.98 minutes, and 54.9 degrees ofinclination to the equator.[4] It is used to broadcast the PRN 29 signal, and operates in slot 1 of plane C of the GPS constellation. The satellite has a design life of 10 years and a mass of 2,032 kilograms (4,480 lb).[2] As of 2012 it remains in service.
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