An ESSA satellite
|Mission type||Weather satellite|
|Launch mass||297 kilograms (655 lb)|
|Start of mission|
|Launch date||15 December 1968, 17:21:04UTC|
|Launch site||Vandenberg SLC-2E|
|End of mission|
|Deactivated||12 March 1976|
|Semi-major axis||7,816.70 kilometers (4,857.07 mi)|
|Perigee||1,421 kilometers (883 mi)|
|Apogee||1,470 kilometers (910 mi)|
|Epoch||7 December 2013, 13:01:30 UTC|
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 U.S. Weather Bureau, and the NMC.
- "ESSA". NASA Science. Retrieved 8 December 2013.
- "ESSA 8". National Space Science Data Center. Retrieved 8 December 2013.
- McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 8 December 2013.
- "ESSA 8 (TOS-F) Satellite details 1968-114A NORAD 3615". N2YO. 7 December 2013. Retrieved 8 December 2013.
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