Luna Ye-8-5 No.402, an uncrewed Soviet lunar soil-sample-return attempt raced ahead of Apollo 11. Proton-K/Blok D from Baikonur Site 81/24 on 14 June 1969 failed when the Blok D upper stage did not ignite, leaving the probe on a suborbital trajectory.
- Outcome
- Failure
- Orbit
- LO
- Lunar orbit
- Payload to orbit
- Did not reach orbit
- Flight
- 13th
- of 38 Proton / UR-500 K/D flights
- Date and time
- 14 June 1969, 04:00 UTC
- Rocket
- Proton / UR-500 K/D
- Builder
- Khrunichev
- Launch site
- 81/24 (81P), Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Lunar Exploration
- Launches in 1969
- 59th of 125