Unnamed Zenit-4 (No.40L), a Soviet high-resolution film-return photoreconnaissance satellite launched from Baikonur that failed to reach a usable orbit; no Kosmos designation was assigned.
- Outcome
- Failure
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- Did not reach orbit
- Flight
- 36th
- of 44 Vostok 8A92 flights
- Date and time
- 16 September 1966, 09:30 UTC
- Rocket
- Vostok 8A92
- Builder
- RKK Energia
- Launch site
- 31/6, Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Government/Top Secret
- Launches in 1966
- 91st of 131