USA 55

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10-day predictions
USA 55 is classified as:

• Military

NORAD ID: 20547
Int'l Code: 1990-028B
Perigee: 443.7 km
Apogee: 555.3 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   19196.94269038  .00000200  00000-0  83400-5 0  9996
2 20547  94.0918 185.1809 0081248 306.7593  52.6211 15.24469188614757

Source of the keplerian elements: AFSPC