USA 21

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USA 21 is classified as:

• Military

NORAD ID: 17506
Int'l Code: 1987-015A
Perigee: 498.4 km
Apogee: 39,743.1 km
Inclination: 62.9 °
Period: 715.2 minutes
Semi major axis: 26491 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   25093.89286611 0.00000000  00000-0  00000-0 0    03
2 17506  62.8707 321.7175 7406963 275.5271  12.1328  2.01343017    09

Source of the keplerian elements: McCants