Soyuz 33 COSPAR ID 1979-029A Mission duration 1 day, 23 hours, 1 minute, 6 seconds Orbits completed 31 Spacecraft properties Spacecraft type Soyuz 7K-T Manufacturer NPO Energia Crew Crew size 2 Members Nikolai Rukavishnikov Georgi Ivanov Callsign Сатурн (Saturn) - "Saturn" Start of mission Launch date April 10, 1979, 17:34:34 (1979-04-10UTC17:34:34Z) UTC Rocket Soyuz-U Launch site Baikonur 1/5 End of mission Landing date April 12, 1979, 16:35:40 (1979-04-12UTC16:35:41Z) UTC Landing site 320 kilometres (200 mi) SE of Dzhezkazgan Orbital parameters Reference system Geocentric Regime Low Earth Soyuz programme (Manned missions)