USA 55

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10-day predictions
USA 55 is classified as:

• Military

NORAD ID: 20547
Int'l Code: 1990-028B
Perigee: 440.5 km
Apogee: 557.1 km
Inclination: 94.1 °
Period: 94.4 minutes
Semi major axis: 6869 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   20265.53416246 +.00000279 +00000-0 +10912-4 0  9998
2 20547 094.1002 063.1184 0084895 123.8204 237.1160 15.24717061681350

Source of the keplerian elements: AFSPC