NAVSTAR 53 (USA 175)

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NAVSTAR 53 (USA 175) is classified as:

• Global Positioning System (GPS) Operational
• Global Positioning System (GPS) Constellation

NORAD ID: 28129
Int'l Code: 2003-058A
Perigee: 19,989.6 km
Apogee: 20,391.5 km
Inclination: 53.0 °
Period: 718.0 minutes
Semi major axis: 26561 km
RCS: 6.3095 m² (large)
Launch date: December 21, 2003
Source: United States (US)
Launch site: AIR FORCE EASTERN TEST RANGE (AFETR)
PRN: 22

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   18174.20188043  .00000028  00000-0  00000+0 0  9994
2 28129  53.0176 142.2697 0075640 272.7335  86.3728  2.00550196106311

Source of the keplerian elements: AFSPC