USA 21

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USA 21 is classified as:

• Military

NORAD ID: 17506
Int'l Code: 1987-015A
Perigee: 393.7 km
Apogee: 39,929.9 km
Inclination: 62.8 °
Period: 716.9 minutes
Semi major axis: 26532 km
RCS: Unknown
Launch date: February 12, 1987
Source: United States (US)
Launch site: AIR FORCE WESTERN TEST RANGE (AFWTR)

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1 17506U 87015A   24115.97913006  .00000825  00000-0  38931-3 0  9990
2 17506  62.7813  17.9200 7450427 272.1464  12.7563  2.00876239 35023

Source of the keplerian elements: AFSPC