USA 21

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USA 21 is classified as:

• Military

NORAD ID: 17506
Int'l Code: 1987-015A
Perigee: 395.3 km
Apogee: 39,930.1 km
Inclination: 62.8 °
Period: 716.9 minutes
Semi major axis: 26533 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   24110.00525186  .00000802  00000-0  50735-3 0  9998
2 17506  62.7768  18.8979 7449929 272.0734  12.8271  2.00865736 34902

Source of the keplerian elements: AFSPC