NAVSTAR 51 (USA 166)

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NAVSTAR 51 (USA 166) is classified as:

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

NORAD ID: 27663
Int'l Code: 2003-005A
Perigee: 19,883.4 km
Apogee: 20,493.5 km
Inclination: 56.0 °
Period: 717.9 minutes
Semi major axis: 26559 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   20291.99948928 -.00000020 +00000-0 +00000-0 0  9997
2 27663 055.9598 297.1235 0114863 034.9795 324.6747 02.00573668129828

Source of the keplerian elements: AFSPC