USA 21

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USA 21 is classified as:

• Military

NORAD ID: 17506
Int'l Code: 1987-015A
Perigee: 1,607.7 km
Apogee: 38,745.4 km
Inclination: 62.6 °
Period: 717.5 minutes
Semi major axis: 26547 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   21100.44745270  .00001008  00000-0  00000-0 0  9996
2 17506  62.6002 176.7779 6994545 263.3199  19.6716  2.00708761 12730

Source of the keplerian elements: AFSPC