Category:Soyuz 31

**Soyuz 31**
	Valery Bykovsky i Sigmund Jähn
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Instance of	human spaceflight;
Part of	Soyuz programme;
Call sign	Ястреб (Yastreb);
Location	Soviet Union;
Operator	Soviet space program;
Start point	Baikonur Cosmodrome (Gagarin's Start);
Manufacturer	S.P. Korolev Rocket and Space Corporation Energia;
Space launch vehicle	Soyuz-U;
UTC date of spacecraft launch	26 August 1978;
Type of orbit	low Earth orbit;
Significant event	rocket launch (1978, Gagarin's Start); landing (1978, Kazakhstan); docking and berthing of spacecraft (Salyut 6, stern, 929,664 second, 1978–1978); docking and berthing of spacecraft (Salyut 6, bow, 6,836,040 second, 1978–1978);
Mass	6,800 kg (takeoff);
Duration	5,861,567 s;
Follows	Soyuz 30;
Followed by	Soyuz 32;
Authority file
	Q916974; BabelNet ID: 03731126n
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