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USA 57

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USA 57 is classified as:


NORAD ID: 20561
Int'l Code: 1990-031B
Perigee: 614.8 km
Apogee: 712.6 km
Inclination: 89.8 °
Period: 97.9 minutes
Semi major axis: 7034 km
RCS: Unknown
Launch date: April 11, 1990
Source: United States (US)
Launch site: AIR FORCE WESTERN TEST RANGE (AFWTR)
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 20561U 90031B   24197.49766030  .00001131  00000-0  17339-3 0  9997
2 20561  89.8438 278.3981 0069518  22.2305 338.1902 14.71420878 11928
Source of the keplerian elements: AFSPC