
Kosmos 690 (Bion #2), a Soviet biosatellite studying radiation effects on living organisms, carrying rats, tortoises, insects, fungi, and a cesium-137 gamma source. Soyuz-U from Plesetsk Site 43/4 placed it in LEO for a ~20-day recoverable flight.
- Outcome
- Success
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- 6.1 T (est.)
- Flight
- 10th
- of 714 Soyuz U flights
- Date and time
- 22 October 1974, 17:59 UTC
- Rocket
- Soyuz U
- Builder
- Progress RSC
- Launch site
- 43/4 (43R), Plesetsk Cosmodrome, Russian Federation
- Payload
- Biology
- International designator
- 1974-080
- Launches in 1974
- 86th of 113
See it in orbit
Space Atlas shows the satellites and rocket stages from this launch in 3D.
View satellites in Space Atlas