Discoverer 33 (Corona Mission 9026 / KH-2 8), a U.S. NRO/CIA film-return photoreconnaissance satellite launched on a Thor DM-21 Agena-B from Vandenberg; Agena hydraulic failure caused premature main-engine shutdown and the payload never reached orbit.
- Outcome
- Failure
- Payload to orbit
- Did not reach orbit
- Flight
- 18th
- of 40 Thor DM-21 Agena-B flights
- Date and time
- 23 October 1961, 19:23 UTC
- Rocket
- Thor DM-21 Agena-B
- Builder
- McDonnell Douglas
- Launch site
- Space Launch Complex 1E, Vandenberg SFB, CA, USA
- Payload
- Unknown
- Launches in 1961
- 38th of 50