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USA 57

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USA 57 is classified as:


NORAD ID: 20561
Int'l Code: 1990-031B
Perigee: 617.0 km
Apogee: 711.4 km
Inclination: 89.8 °
Period: 97.9 minutes
Semi major axis: 7035 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   24138.80453157  .00002299  00000-0  35761-3 0  9995
2 20561  89.8397 279.5334 0067062 225.9269 133.6418 14.71247712  3295
Source of the keplerian elements: AFSPC