NAVSTAR 51 (USA 166)

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NAVSTAR 51 (USA 166) is classified as:

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

NORAD ID: 27663
Int'l Code: 2003-005A
Perigee: 19,867.7 km
Apogee: 20,511.1 km
Inclination: 55.8 °
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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1 27663U 03005A   21102.22903628 -.00000036  00000-0  00000-0 0  9990
2 27663  55.8246 290.1551 0121118  37.5591 131.5609  2.00563348133365

Source of the keplerian elements: AFSPC