USA-175
 A Block IIR GPS satellite | |
| Mission type | Navigation |
|---|---|
| Operator | US Air Force |
| COSPAR ID | 2003-058A[1] |
| SATCATno. | 28129[1] |
| Mission duration | 10 years (planned)[2] 18 years (achieved) |
| Spacecraft properties | |
| Spacecraft type | GPS Block IIR[2] |
| Bus | AS-4000[2] |
| Manufacturer | Lockheed Martin[2] |
| Launch mass | 2,032 kilograms (4,480 lb)[2] |
| Start of mission | |
| Launch date | 21 December 2003, 08:05:00UTC |
| Rocket | Delta II7925-9.5,D302[3] |
| Launch site | Cape CanaveralSLC-17A[3] |
| End of mission | |
| Deactivated | 18 January 2022 |
| Orbital parameters | |
| Reference system | Geocentric |
| Regime | Medium Earth (Semi-synchronous) |
| Perigee altitude | 20,043 kilometres (12,454 mi)[4] |
| Apogee altitude | 20,319 kilometres (12,626 mi)[4] |
| Inclination | 55.1 degrees[4] |
| Period | 717.92 minutes[4] |
USA-175,also known asGPS IIR-10andGPS SVN-47,is an Americannavigation satellitewhich forms part of theGlobal Positioning System.It was the tenthBlock IIRGPS satellite to be launched, out of thirteen in the original configuration, and twenty oneoverall.It was built byLockheed Martin,using theAS-4000satellite bus.[2]
USA-175 was launched at 08:05:00 UTC on 21 December 2003, atop aDelta IIcarrier rocket, flight number D302, flying in the 7925-9.5 configuration.[3]The launch took place fromSpace Launch Complex 17Aat theCape Canaveral Air Force Station,[5]and placed USA-175 into a transfer orbit. The satellite raised itself intomedium Earth orbitusing aStar-48apogee motor.[2]
By 22 February 2004, USA-175 was in an orbit with aperigeeof 20,043 kilometres (12,454 mi), anapogeeof 20,319 kilometres (12,626 mi), aperiodof 717.92 minutes, and 55.1 degrees ofinclinationto the equator.[4]It is used to broadcast the PRN 22 signal, and operates in slot 2 of plane E of the GPS constellation. The satellite has a mass of 2,032 kilograms (4,480 lb), and a design life of 10 years.[2]It was decommissioned in January 2022, per the USCG Nanu 2022001.[6]
References
[edit]- ^ab"Navstar 53".US National Space Science Data Center.Retrieved11 July2012.
- ^abcdefghKrebs, Gunter."GPS-2R (Navstar-2R)".Gunter's Space Page.Retrieved11 July2012.
- ^abcMcDowell, Jonathan."Launch Log".Jonathan's Space Page.Retrieved11 July2012.
- ^abcdeMcDowell, Jonathan."Satellite Catalog".Jonathan's Space Page.Retrieved11 July2012.
- ^McDowell, Jonathan."Launch List".Launch Vehicle Database.Jonathan's Space Page. Archived fromthe originalon 15 August 2020.Retrieved11 July2012.
- ^"Home | Navigation Center".
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