 A Block IIRM GPS satellite | |
| Mission type | Navigation |
|---|---|
| Operator | US Air Force |
| COSPAR ID | 2005-038A[1] |
| SATCATno. | 28874[1] |
| Mission duration | 10 years (planned)[2] |
| 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 | 26 September 2005, 03:37:00 (2005-09-26UTC03:37Z) UTC |
| Rocket | Delta II 7925-9.5, D313[3] |
| Launch site | Cape CanaveralSLC-17A[3] |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Medium Earth (Semi-synchronous) |
| Perigee altitude | 20,140 kilometers (12,510 mi)[4] |
| Apogee altitude | 20,222 kilometers (12,565 mi)[4] |
| Inclination | 55 degrees[4] |
| Period | 717.92 minutes[4] |
USA-183, also known asGPS IIR-14(M),GPS IIRM-1 andGPS SVN-53, is an Americannavigation satellite which forms part of theGlobal Positioning System. It was the first of eightBlock IIRM satellites to be launched, and the fourteenth of twenty oneBlock IIR satellites overall. It was built byLockheed Martin, using theAS-4000satellite bus.[2]
USA-183 was launched at 03:37:00 UTC on 26 September 2005, atop aDelta II carrier rocket, flight number D313, 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-183 into a transfer orbit. The satellite raised itself intomedium Earth orbit using aStar-37FMapogee motor.[2]
By 25 November 2005, USA-183 was in an orbit with aperigee of 20,140 kilometers (12,510 mi), anapogee of 20,222 kilometers (12,565 mi), aperiod of 717.92 minutes, and 55 degrees ofinclination to the equator.[4] It is used to broadcast the PRN 17 signal, and operates in slot 4 of plane C of the GPS constellation. The satellite has a mass of 2,032 kilograms (4,480 lb), and a design life of 10 years.[2] As of 2019 it remains in service.
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