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USA 55

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USA 55 is classified as:


NORAD ID: 20547
Int'l Code: 1990-028B
Perigee: 444.4 km
Apogee: 558.8 km
Inclination: 94.1 °
Period: 94.5 minutes
Semi major axis: 6872 km
RCS: 0.1768 m2 (medium)
Launch date: April 5, 1990
Source: United States (US)
Launch site: AIR FORCE WESTERN TEST RANGE (AFWTR)
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 20547U 90028B   17083.94536299 +.00000457 +00000-0 +18106-4 0  9999
2 20547 094.0958 082.8878 0083221 213.7057 145.8881 15.23782465486890
Source of the keplerian elements: AFSPC