Mission type Weather satellite COSPAR ID 1968-114A Manufacturer RCA Astro | Operator ESSA/NASA SATCAT no. 3615 Launch mass 297 kilograms (655 lb) | |
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Similar ESSA‑9, NOAA‑4, ESSA‑1, Kosmos 215 | ||
ESSA-8 was a weather satellite launched by the National Aeronautics and Space Administraton (NASA) on December 15, 1968, from Vandenberg Air Force Base, California. Its name was derived from that of its oversight agency, the Environmental Science Services Administration (ESSA).
ESSA-8 was an 18-sided polygon. It measured 110 centimetres (42 in) in diameter by 22 inches (56 cm) in height, with a mass of 130 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 5,200-square-kilometre (2,000 sq mi) area at a resolution of 3.2 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 National Weather Service, and the National Centers for Environmental Prediction (NMC).
ESSA-8 operated for 2,644 days until it was deactivated on March 12, 1976.