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NAVSTAR 51 (USA 166)

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NAVSTAR 51 (USA 166) is classified as:


NORAD ID: 27663
Int'l Code: 2003-005A
Perigee: 19,944.6 km
Apogee: 20,435.0 km
Inclination: 56.7 °
Period: 718.0 minutes
Semi major axis: 26560 km
RCS: 7.9432 m2 (large)
Launch date: January 29, 2003
Source: United States (US)
Launch site: AIR FORCE EASTERN TEST RANGE (AFETR)
PRN: 16

Navstar 51 (also known as USA 166, and as GPS 2R-8) is the latest to join the American (DoD) fleet of Global Positioning Satellites. It was launched by a Delta 2 rocket from Cape Canaveral at 18:06 UT on January 29 2003. The fleet is operating in full capacity with 24 spacecraft (in six planes, with four satellites in each). GPS 2R-8 will replace the aging GPS 2A-18, which will be shifted away in its Plane-B and then retired.
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 27663U 03005A   17176.24019328 -.00000078 +00000-0 +00000-0 0  9999
2 27663 056.7007 344.5737 0092321 024.9931 186.9951 02.00558936105541
Source of the keplerian elements: AFSPC