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NAVSTAR 57 (USA 183)

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NAVSTAR 57 (USA 183) is classified as:

NORAD ID: 28874
Int'l Code: 2005-038A
Perigee: 19,864.3 km
Apogee: 20,514.9 km
Inclination: 56.2 °
Period: 718.0 minutes
Semi major axis: 26560 km
RCS: 3.4122 m2 (large)
Launch date: September 26, 2005
Source: United States (US)
PRN: 17

Navstar 57, also known as USA 183 and as GPS 2R-M1 (and as GPS 2R-14), was launched by a Delta 2 rocket from Cape Canaveral AFS at 03:37 UT on 26 September 2005. It has three more frequency channels (with two more military and one more civilian), and is more secure against jamming and radiation than the older models. It will be positioned in Slot 4 of Plane C, taking over the duties of the aging GPS 2A-20 (that was launched in May 1993). It is planned to replace all the older members of the 28-satellite fleet with the updated 2R-M versions in a few years. (The perigee will be raised from 266 km to about 20,000 km soon.)
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 28874U 05038A   17293.46428112 -.00000087  00000-0  00000+0 0  9990
2 28874  56.2204  38.2448 0122480 254.9419 173.1988  2.00560790 88417
Source of the keplerian elements: AFSPC