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8 April 1961, 19:21 UTC

KH-5 2

Thor DM-21 Agena-BVandenberg SFB, CA, USA
Drawing of the Thor DM-21 Agena-B for KH-5 2

Discoverer 23 (KH-5 Argon mission 9016A), a U.S. film-return area-survey reconnaissance satellite launched from Vandenberg. It reached LEO, but on deorbit the recovery vehicle SRV-521 fired the wrong way, boosting itself into a higher orbit; the capsule was never recovered.

Outcome
Success
Orbit
LEO
Low Earth orbit
Payload to orbit
311 kg
Flight
8th
of 40 Thor DM-21 Agena-B flights
Date and time
8 April 1961, 19:21 UTC
Builder
McDonnell Douglas
Launch site
Space Launch Complex 1E, Vandenberg SFB, CA, USA
Payload
Government/Top Secret
International designator
1961-011
Launches in 1961
13th of 50

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