USA 21

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USA 21 is classified as:

• Military

NORAD ID: 17506
Int'l Code: 1987-015A
Perigee: 1,698.4 km
Apogee: 38,742.5 km
Inclination: 62.5 °
Period: 719.2 minutes
Semi major axis: 26591 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   20145.21560082 -.00000013 +00000-0 +00000-0 0  9991
2 17506 062.5011 214.8495 6965429 262.5948 020.3113 02.00212417006304

Source of the keplerian elements: AFSPC