Soyuz 31, Interkosmos visit to Salyut 6 with Valery Bykovsky and Sigmund Jähn, the first German (East German) cosmonaut. Soyuz-U from Baikonur docked to Salyut 6 EP-4; the pair returned in Soyuz 29 after exchanging craft with the EO-2 resident crew.
- Outcome
- Success
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- 6.8 T
- Flight
- 115th
- of 714 Soyuz U flights
- Date and time
- 26 August 1978, 14:51 UTC
- Rocket
- Soyuz U
- Builder
- Progress RSC
- Launch site
- 1/5, Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Human Exploration
- International designator
- 1978-081
- Launches in 1978
- 84th of 128
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Space Atlas shows the satellites and rocket stages from this launch in 3D.
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