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ATLAS 28E R/B

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NORAD ID: 20563
Int'l Code: 1990-031D
Perigee: 596.8 km
Apogee: 684.0 km
Inclination: 89.9 °
Period: 97.4 minutes
Semi major axis: 7011 km
RCS: Unknown
Launch date: April 11, 1990
Source: United States (US)
Launch site: AIR FORCE WESTERN TEST RANGE (AFWTR)

Note: This is a ROCKET BODY
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 20563U 90031D   25048.85582983  .00002199  00000-0  28760-3 0  9993
2 20563  89.8530 264.8244 0062227 110.2822 250.5104 14.78749997298939
Source of the keplerian elements: AFSPC