Discoverer 29

Discoverer 29
Discoverer 29
Operator US Air Force/NRO
Major contractors Lockheed
Bus KH-3 Corona'''
Agena-B
Mission type Optical reconnaissance
Launch date 30 August 1961
20:00 UTC
Carrier rocket Thor DM-21 Agena-B 323
Launch site Vandenberg LC-75-3-4
Mission duration 2 days
Orbital decay 9 September 1961
COSPAR ID 1961 Psi 1
Mass 1,150 kilograms (2,500 lb)
Orbital elements
Regime Low Earth
Inclination 82°
Apoapsis 511 kilometres (318 mi)
Periapsis 138 kilometres (86 mi)
Orbital period 91 minutes
The launch of Discoverer 29

Discoverer 29, also known as Corona 9023, was an American optical reconnaissance satellite which was launched in 1961. It was the first KH-3 Corona''' satellite, which was based around an Agena-B.[1]

The launch of Discoverer 29 occurred at 20:00 UTC on 30 August 1961. A Thor DM-21 Agena-B rocket was used, flying from Launch Complex 75-3-4 at the Vandenberg Air Force Base.[2] Upon successfully reaching orbit, it was assigned the Harvard designation 1961 Psi 1.

Discoverer 29 was operated in a low Earth orbit, with a perigee of 138 kilometres (86 mi), an apogee of 511 kilometres (318 mi), 82 degrees of inclination, and a period of 91 minutes.[3] The satellite had a mass of 1,150 kilograms (2,500 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-millimetre (2.8 in) film, and returned in a Satellite Recovery Vehicle two days after launch, however all of the images returned were found to be out of focus.[4] The Satellite Recovery Vehicle used by Discoverer 29 was SRV-554.[2] Once its images had been returned, Discoverer 29 remained in orbit until it decayed on 9 September 1961.[3]


References

  1. ^ Krebs, Gunter. "KH-3 Corona". Gunter's Space Page. http://space.skyrocket.de/doc_sdat/kh-3.htm. Retrieved 28 June 2010. 
  2. ^ a b McDowell, Jonathan. "Launch Log". Jonathan's Space Page. http://planet4589.org/space/log/launchlog.txt. Retrieved 28 June 2010. 
  3. ^ a b McDowell, Jonathan. "Satellite Catalog". Jonathan's Space Page. http://planet4589.org/space/log/satcat.txt. Retrieved 28 June 2010. 
  4. ^ a b Wade, Mark. "KH-3". Encyclopedia Astronautica. http://www.astronautix.com/craft/kh3.htm. Retrieved 28 June 2010. 
  5. ^ "Corona". Mission and Spacecraft Library. NASA. http://msl.jpl.nasa.gov/programs/corona.html. Retrieved 28 June 2010. 



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