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USA 21

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USA 21 is classified as:


NORAD ID: 17506
Int'l Code: 1987-015A
Perigee: 1,425.7 km
Apogee: 38,884.3 km
Inclination: 62.7 °
Period: 716.6 minutes
Semi major axis: 26525 km
RCS: Unknown
Launch date: February 12, 1987
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 17506U 87015A   21293.07680545 -.00001082  00000-0  00000-0 0  9994
2 17506  62.6537 153.1912 7060737 263.6689  18.9358  2.00953621 16607
Source of the keplerian elements: AFSPC