Template:Infobox spaceflight

Thor Agena B with Discoverer 30 (Sep. 12, 1961)

The launch of Discoverer 30

Discoverer 30, also known as Corona 9022, was an American optical reconnaissance satellite which was launched in 1961. It was a KH-3 Corona''' satellite, based on an Agena-B rocket.[1]

The launch of Discoverer 30 occurred at 19:59 UTC on 12 September 1961. A Thor DM-21 Agena-B rocket was used, flying from Launch Complex 75-3-5 at the Vandenberg Air Force Base.[2] Upon successfully reaching orbit, it was assigned the Harvard designation 1961 Omega 1.

Discoverer 30 was operated in a low Earth orbit, with a perigee of 231 kilometres (Template:Convert/round mi), an apogee of 484 kilometres (Template:Convert/round mi), 82.6 degrees of inclination, and a period of 91.7 minutes.[3] The satellite 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] Images were recorded onto 70-millimeter (Template:Convert/LoffAonSon) film, and returned in a Satellite Recovery Vehicle two days after launch however, like the previous mission, all of the images returned were found to be out of focus.[4] The Satellite Recovery Vehicle used by Discoverer 30 was SRV-551. Once its images had been returned, Discoverer 30's mission was complete, and it remained in orbit until its decay on 11 December 1961.[3]


  1. Krebs, Gunter. "KH-3 Corona". Gunter's Space Page. Retrieved 29 June 2010. 
  2. McDowell, Jonathan. "Launch Log". Jonathan's Space Page. Retrieved 29 June 2010. 
  3. 3.0 3.1 McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 29 June 2010. 
  4. 4.0 4.1 Wade, Mark. "KH-3". Encyclopedia Astronautica. Retrieved 29 June 2010. 
  5. "Corona". Mission and Spacecraft Library. NASA. Retrieved 29 June 2010. 
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