Discoverer 30

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Discoverer 30
Mission typeOptical reconnaissance
Operator US Air Force/NRO
Harvard designation1961 Omega 1
COSPAR ID 1961-024A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 00182 OOjs UI icon edit-ltr-progressive.svg
Mission duration2 days
Spacecraft properties
Spacecraft type KH-3 Corona'''
Bus Agena-B
Manufacturer Lockheed
Launch mass1,150 kilograms (2,540 lb)
Start of mission
Launch date12 September 1961, 19:59 (1961-09-12UTC19:59Z) UTC
Rocket Thor DM-21 Agena-B 310
Launch site Vandenberg LC-75-3-5
End of mission
Decay date11 December 1961 (1961-12-12)
Orbital parameters
Reference system Geocentric
Regime Low Earth
Perigee altitude 231 kilometers (144 mi)
Apogee altitude 484 kilometers (301 mi)
Inclination 82.6 degrees
Period 91.7 minutes
 
The launch of Discoverer 30 Thor Agena B with Discoverer 30 (Sep. 12, 1961).gif
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 (144 mi), an apogee of 484 kilometres (301 mi), 82.6 degrees of inclination, and a period of 91.7 minutes. [3] The satellite had a mass of 1,150 kilograms (2,540 lb), [4] and was equipped with a panoramic camera with a focal length of 61 centimetres (24 in), which had a maximum resolution of 7.6 metres (25 ft). [5] Images were recorded onto 70-millimeter (2.8 in) 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]

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References

  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. 1 2 McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. Retrieved 29 June 2010.
  4. 1 2 Wade, Mark. "KH-3". Encyclopedia Astronautica. Archived from the original on 18 September 2010. Retrieved 29 June 2010.
  5. ↑ "Corona". Mission and Spacecraft Library. NASA. Archived from the original on 3 October 2007. Retrieved 29 June 2010.


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