USA 21

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USA 21 is classified as:

• Military

NORAD ID: 17506
Int'l Code: 1987-015A
Perigee: 393.6 km
Apogee: 39,929.7 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   24116.97474707  .00000823  00000-0  30459-3 0  9996
2 17506  62.7821  17.7576 7450464 272.1589  12.7427  2.00877825 35048

Source of the keplerian elements: AFSPC