Soyuz T-11 was the sixth expedition to the Soviet Salyut 7 space station, which in 1984 carried the first Indian cosmonaut along with Soviet crew members. Salyut 7 was uncrewed after the undocking of Soyuz T-11 in October 1984 until Soyuz T-13 docked with the station in June 1985. Salyut 7 developed problems during the time it was uncrewed, which meant that the crew of Soyuz T-13 had to perform a manual docking and do repairs to the station. Crew Backup crew Mission parameters Mass: 6850 kg Perigee: 195 km Apogee: 224 km Inclination: 51.6° Period: 88.7 minutes Mission highlights Rakesh Sharma, aboard Salyut 7 for 7 days, 21 hours, and 40 minutes, conducted an Earth observation program concentrating on India. He also did life sciences and materials processing experiments, including silicium fusing tests. He is also reported to have experimented with practicing yoga to deal with the effects of prolonged orbital spaceflight. References Crewed Soyuz missions 1984 in spaceflight 1984 in the Soviet Union India–Soviet Union relations Spacecraft launched in 1984