NAVSTAR 53 (USA 175)

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NAVSTAR 53 (USA 175) is classified as:

• Global Positioning System (GPS) Constellation

NORAD ID: 28129
Int'l Code: 2003-058A
Perigee: 20,003.4 km
Apogee: 20,374.3 km
Inclination: 54.1 °
Period: 718.0 minutes
Semi major axis: 26559 km
RCS: 6.3095 m² (large)
Launch date: December 21, 2003
Source: United States (US)
Launch site: AIR FORCE EASTERN TEST RANGE (AFETR)

Navstar 53, also known as USA 175, as GPS 2R-10, and as SVN-47, is an American navigational satellite in the GPS fleet. It was launched by a Delta 2 rocket from Cape Canaveral AFS at 07:50 UT on 21 December 2003. It will replace the aging but still operational GPS 2A-10 craft in Plane-E and Slot-2. The GPS constellation consists of 24 satellites split into six orbital planes with four in each plane, all in circular orbits of altitude 20,200 km, and inclination of 55 degrees. There are also four additional satellites orbiting as reserves

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1 28129U 03058A   23037.88351279 -.00000022  00000-0  00000-0 0  9991
2 28129  54.0746  71.7611 0069825 321.7812  37.7980  2.00568823140190

Source of the keplerian elements: AFSPC