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USA 173

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USA 173 is classified as:


NORAD ID: 28095
Int'l Code: 2003-054A
Perigee: 743.8 km
Apogee: 1,478.1 km
Inclination: 63.4 °
Period: 107.3 minutes
Semi major axis: 7481 km
RCS: Unknown
Launch date: December 2, 2003
Source: United States (US)
Launch site: AIR FORCE WESTERN TEST RANGE (AFWTR)

USA 173 is an American military satellite (operated by the National Reconnaissance Office) that was launched by an Atlas 2AS rocket from Vandenberg AFB at 10:04 UT on 2 December 2003. It is reported to be part of the NOSS (Naval Ocean Surveillance System) fleet.
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 28095U 03054A   23041.18655732 0.00000100  00000-0  87769-4 0    08
2 28095  63.4006  73.3723 0490698   1.8340 358.1659 13.41471735    05
Source of the keplerian elements: McCants