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USA 173

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USA 173 is classified as:


NORAD ID: 28095
Int'l Code: 2003-054A
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   26257.16237225 0.00000000  00000-0  00000-0 0    09
2 28095  63.4041 303.7252 0577984  10.0084 349.9916 13.42084996    06
Source of the keplerian elements: MCCANTS