Discoverer 9 (Corona Mission 9006 / KH-1), a U.S. NRO film-return reconnaissance satellite with a Transit-on-Discoverer tracking experiment, failed when Thor and Agena underburned after a faulty helium disconnect; it fell into the Pacific.
- Outcome
- Failure
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- Did not reach orbit
- Flight
- 9th
- of 15 Thor Agena A flights
- Date and time
- 4 February 1960, 18:51 UTC
- Rocket
- Thor Agena A
- Builder
- McDonnell Douglas
- Launch site
- Space Launch Complex 1W, Vandenberg SFB, CA, USA
- Payload
- Government/Top Secret
- Launches in 1960
- 1st of 38