USA 55

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10-day predictions
USA 55 is classified as:

• Military

NORAD ID: 20547
Int'l Code: 1990-028B
Perigee: 426.5 km
Apogee: 524.3 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   24138.35296756  .00007950  00000-0  23420-3 0  9993
2 20547  94.1080  77.5460 0071434 157.7361 202.7017 15.32532793884896

Source of the keplerian elements: AFSPC