Tracking 17333 objects as of 25-November-2015
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SME is no longer on orbit
SME is classified as:

NORAD ID: 12887
Int'l Code: 1981-100A
Launch date: October 6, 1981
Source: United States (US)
Decay date: 1991-03-05
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NASA's NSSDC Master Catalog

Two Line Element Set (TLE):

Source of the keplerian elements: AFSPC

N2YO: 273