Tracking 19709 objects as of 20-Jun-2019
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USA 21


USA 21 is classified as:


NORAD ID: 17506
Int'l Code: 1987-015A
Launch date: February 12, 1987
Source: United States (US)
Launch site: AIR FORCE WESTERN TEST RANGE (AFWTR)
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
Source of the keplerian elements: AFSPC