USA 55

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10-day predictions
USA 55 is classified as:

• Military

NORAD ID: 20547
Int'l Code: 1990-028B
Perigee: 434.0 km
Apogee: 533.8 km
Inclination: 94.1 °
Period: 94.1 minutes
Semi major axis: 6854 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   23269.68252330  .00005775  00000-0  18617-3 0  9998
2 20547  94.0995 308.3099 0072810 323.7133  35.9188 15.29679154849147

Source of the keplerian elements: AFSPC