USA 55

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10-day predictions
USA 55 is classified as:

• Military

NORAD ID: 20547
Int'l Code: 1990-028B
Perigee: 427.1 km
Apogee: 524.1 km
Inclination: 94.1 °
Period: 94.0 minutes
Semi major axis: 6846 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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1 20547U 90028B   24134.56567169  .00007351  00000-0  21735-3 0  9993
2 20547  94.1086  75.4404 0070830 171.9038 188.3373 15.32474958883773

Source of the keplerian elements: AFSPC