GPS Operational
NORAD ID: 28361
Int'l Code: 2004-023A
Perigee: 19,928.3 km
Apogee: 20,450.3 km
Inclination: 54.4 °
Period: 718.0 minutes
Semi major axis: 26560 km
Launch date: June 23, 2004
Source: United States (US)
PRN: 23
Comments: NAVSTAR 55, also known as USA 178, and as GPS 2R-12, is an American navigational satellite in the GPS fleet that was launched from Cape Canaveral by a Delta 2 rocket at 22:54 UT on 23 June 2004. The 2.1 tonne satellite will soon be manuevered into Slot 4 in Plane F to replace the aging GPS 2A-16 that was launched in November 1992. (GPS 2A-16 will however be repositioned in the same Plane as a backup, till its failue.
Two Line Element Set (TLE):
1 28361U 04023A 15031.82772131 .00000038 00000-0 00000+0 0 2195
2 28361 054.4001 255.3768 0098279 205.5367 137.3543 02.00564306 77731
Source: AFSPC
NASA's NSSDC Master Catalog entry for NAVSTAR 55 (USA 178)
