Kosmos 1074 ( meaning Cosmos 1074) was a Soviet unmanned long-duration test flight of the Soyuz-T spacecraft launched on January 31, 1979 and de-orbited on April 1, 1979. Mission parameters Spacecraft: Soyuz 7K-ST Mass: 6450 kg Crew: None Launched: January 31, 1979 Landed: April 1, 1979 References Kosmos satellites 1979 in the Soviet Union Spacecraft launched in 1979 Soyuz uncrewed test flights