Failed Luna Ye-8-5M sample-return mission (Ye-8-5M No.412), intended as the follow-on to Luna 23; Proton-K Blok D upper-stage malfunction prevented Earth orbit on 16 October 1975.
- Outcome
- Failure
- Orbit
- Lunar Impactor
- Lunar impact
- Payload to orbit
- Did not reach orbit
- Flight
- 1st
- of 12 Proton-K/D-1 flights
- Date and time
- 16 October 1975, 04:04 UTC
- Rocket
- Proton-K/D-1
- Builder
- Khrunichev
- Launch site
- 81/23 (81L), Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Lunar Exploration
- Launches in 1975
- 104th of 132