|Operator||US Air Force|
|Harvard designation||1959 Beta 1|
|Mission duration||Failed to orbit|
|Spacecraft type||Corona Test Vehicle|
|Start of mission|
|Launch date||28 February 1959, 21:49:16UTC|
|Rocket||Thor DM-18 Agena-A 163|
|Launch site||Vandenberg LC-75-3-4|
Discoverer 1 was the first of a series of satellites which were part of the Corona reconnaissance satellite program. It was launched on a Thor-Agena rocket on February 28, 1959 at 1:49 PST from Vandenberg Air Force Base in California. It was a prototype of the KH-1 satellite, but did not contain either a camera or a film capsule. It was the first satellite launched toward the South Pole in an attempt to achieve polar orbit, but was unsuccessful. A CIA report, later declassified, concluded that "Today, most people believe the DISCOVERER I landed somewhere near the South Pole."
- Clayton K. S. Chun, Thunder Over the Horizon: From V-2 Rockets to Ballistic Missiles (Greenwood Publishing Group, 2006), pp74-75
- David L. Hancock (1995), Kevin C. Ruffner, ed., Corona: America's First Satellite Program (PDF), CIA Cold War series, CIA Center for the Study of Intelligence, p. 16
- KH-1 at Encyclopedia Astronautica
- Day, Dwayne A. (13 April 2009). "Lost over the horizon: Discoverer 1 explores Antarctica". The Space Review.
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