Template:Infobox spaceflight Discoverer 33, also known as Corona 9026, was an American optical reconnaissance satellite which was lost in a launch failure in 1961. It was a KH-3 Corona''' satellite, based on an Agena-B.[1]

The launch of Discoverer 33 occurred at 19:23 UTC on 23 October 1961. A Thor DM-21 Agena-B rocket was used, flying from Launch Complex 75-3-5 at the Vandenberg Air Force Base.[2] The launch ended in failure after the Agena suffered a hydraulics system malfunction that led to premature main engine shutdown.[3]

Discoverer 33 was intended to have operated in a low Earth orbit. It had a mass of 1,150 kilograms (Template:Convert/round lb),[4] and was equipped with a panoramic camera with a focal length of 61 centimetres (Template:Convert/round in), which had a maximum resolution of 7.6 metres (Template:Convert/round ft).[5] It would have recorded images onto 70-millimeter (Template:Convert/LoffAonSon) film, and returned this in a Satellite Recovery Vehicle at the end of its mission. The Satellite Recovery Vehicle carried by Discoverer 33 was SRV-553.


  1. Krebs, Gunter. "KH-3 Corona". Gunter's Space Page. Retrieved 30 June 2010. 
  2. McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 30 June 2010. 
  3. Lindborg, Christina; Pike, John (9 September 2000). "KH-3 Corona". Federation of American Scientists. Retrieved 30 June 2010. 
  4. Wade, Mark. "KH-3". Encyclopedia Astronautica. Retrieved 30 June 2010. 
  5. "Corona". Mission and Spacecraft Library. NASA. Retrieved 30 June 2010. 
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