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USA 21

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USA 21 is classified as:


NORAD ID: 17506
Int'l Code: 1987-015A
Perigee: 1,659.2 km
Apogee: 38,711.2 km
Inclination: 62.6 °
Period: 717.8 minutes
Semi major axis: 26556 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   21023.20282640  .00000816  00000-0  00000-0 0  9997
2 17506  62.5836 185.9949 6976134 263.1166  19.9163  2.00610464 11203
Source of the keplerian elements: AFSPC