Failed Soviet US-A #5 (RORSAT) ocean-surveillance satellite with a BES-5 nuclear reactor, intended as the fifth active-radar naval reconnaissance craft. Tsiklon-2 from Baikonur Site 90 failed on 25 April 1973 from an engine malfunction, so the payload never reached orbit and received no Kosmos number.
- Outcome
- Failure
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- Did not reach orbit
- Flight
- 13th
- of 105 Tsiklon-2 flights
- Date and time
- 25 April 1973, 09:10 UTC
- Rocket
- Tsiklon-2
- Builder
- Yuzhmash
- Launch site
- 90, Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Government/Top Secret
- Launches in 1973
- 24th of 116