USA 21

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USA 21 is classified as:

• Military

NORAD ID: 17506
Int'l Code: 1987-015A
Perigee: 392.2 km
Apogee: 39,927.1 km
Inclination: 62.8 °
Period: 716.8 minutes
Semi major axis: 26530 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   24128.92154118  .00000946  00000-0  21581-3 0  9997
2 17506  62.7920  15.7962 7450790 272.3127  12.6421  2.00900399 35289

Source of the keplerian elements: AFSPC