USA 55

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10-day predictions
USA 55 is classified as:

• Military

NORAD ID: 20547
Int'l Code: 1990-028B
Perigee: 411.4 km
Apogee: 498.7 km
Inclination: 94.1 °
Period: 93.5 minutes
Semi major axis: 6826 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   25166.77961293  .00005183  00000-0  12408-3 0  9996
2 20547  94.1037 297.4047 0063974  99.3491 261.5003 15.39389418945434

Source of the keplerian elements: AFSPC