USA 21

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USA 21 is classified as:

• Military

NORAD ID: 17506
Int'l Code: 1987-015A
Perigee: 1,696.4 km
Apogee: 38,702.2 km
Inclination: 62.5 °
Period: 718.4 minutes
Semi major axis: 26570 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   20274.01645570 +.00001181 +00000-0 +00000-0 0  9994
2 17506 062.5464 199.6087 6963758 262.8336 020.1824 02.00451416008897

Source of the keplerian elements: AFSPC