USA 55

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10-day predictions
USA 55 is classified as:

• Military

NORAD ID: 20547
Int'l Code: 1990-028B
Perigee: 441.0 km
Apogee: 558.1 km
Inclination: 94.1 °
Period: 94.5 minutes
Semi major axis: 6870 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   19169.96422847  .00000245  00000-0  97671-5 0  9991
2 20547  94.0908 170.4170 0085221  47.7595 313.0838 15.24454221610648

Source of the keplerian elements: AFSPC