Solar Maximum Mission
Spacecraft
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The Solar Maximum Mission satellite was designed to investigate Solar phenomena, particularly solar flares. It was launched on February 14, 1980. Wikipedia
Launch date: February 14, 1980, 15:57:00 UTC
Decay date: December 2, 1989
Dimensions: 4 by 2.3 metres (13.1 by 7.5 ft)
Launch mass: 2,315.0 kilograms (5,103.7 lb)
Mission duration: Final: 9 years, 9 months, 17 days
Period: 94.80 minutes
Reference system: Geocentric