SME

Solar Mesosphere Explorer

General

Designation	12887 / 81100A
Launch date	6 Oct 1981
Country of origin	United States
Mission	Scientific: high atmosphere study
Perigee/Apogee	335/337 km
Inclination	97.6°
Period	91.3 min
Launch vehicle	Thor Delta #157
Launch site	Vandenberg
Mass at launch	437 kg

Out of service	Dec 1986
Decay	5 Mar 1991

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