USA 55

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10-day predictions
USA 55 is classified as:

• Military

NORAD ID: 20547
Int'l Code: 1990-028B
Perigee: 406.4 km
Apogee: 488.8 km
Inclination: 94.1 °
Period: 93.4 minutes
Semi major axis: 6818 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   25349.90084310  .00004859  00000-0  10770-3 0  9999
2 20547  94.0985  40.3542 0060414 117.2750 243.4675 15.41902507973623

Source of the keplerian elements: AFSPC