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Discoverer 4
Launch FailureLaunch Details
Date: 25 June 1959, 10:47 pm UTC
Rocket: Thor Agena A (Thor)
Provider: United States Air Force
Mission
Type: Government/Top Secret
Orbit: Polar Orbit
Pad: Space Launch Complex 1E, Vandenberg SFB, CA, USA
Mission Description
Discoverer 4 was the fourth in a series of reconnaissance satellites, however, it failed to reach orbit when the Agena engine underperformed and failed to place the capsule into orbit.