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USA 21

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USA 21 is classified as:


NORAD ID: 17506
Int'l Code: 1987-015A
Perigee: 395.9 km
Apogee: 39,930.0 km
Inclination: 62.8 °
Period: 716.9 minutes
Semi major axis: 26533 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   24108.01385827  .00000814  00000-0  62729-3 0  9991
2 17506  62.7754  19.2246 7449704 272.0482  12.8286  2.00862919 34861
Source of the keplerian elements: AFSPC