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Template:Infobox spaceflight ESSA-8 was a weather satellite launched by NASA on December 15, 1968. It operated for 2,644 days until it was deactivated on March 12, 1976. ESSA-8 was launched from Vandenberg Air Force Base, CA.

ESSA-8 was an 18-sided polygon. It measured Template:Convert/round centimetres (42 in) in diameter by 22 inches (Template:Convert/round cm) in height, with a mass of Template:Convert/round kilograms (290 lb). It was made of aluminum alloy and stainless steel covered with 10,020 solar cells. The cells charged 63 nickel–cadmium batteries, which served as a power source. The satellite could take 8 to 10 pictures every 24 hours. Each photo covered a Template:Convert/round-square-kilometre (2,000 sq mi) area at a resolution of Template:Convert/round kilometres (2 mi) per pixel.

ESSA-8's mission was to replace ESSA-6, and provide detailed cloud pattern photography to ground stations worldwide. Partners in the project included NASA, ESSA, RCA, the U.S. Weather Bureau, and the NMC.

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Template:Space-based meteorological observation

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