USA 21

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USA 21 is classified as:

• Military

NORAD ID: 17506
Int'l Code: 1987-015A
Perigee: 865.1 km
Apogee: 39,550.3 km
Inclination: 62.5 °
Period: 718.7 minutes
Semi major axis: 26578 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   22334.01681509  .00001646  00000-0  00000-0 0  9991
2 17506  62.4935  98.4216 7277475 266.4726  15.9459  2.00356030 24741

Source of the keplerian elements: AFSPC