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Soyuz TM-21

Soyuz TM-21 was a Soyuz mission, a human spaceflight mission transporting personnel to the Russian space station Mir. Part of the US/Russian Shuttle-Mir Program, the mission launched from Baikonur Cosmodrome, atop a Soyuz-U2 carrier rocket, at 06:11:34 UTC on March 14, 1995. It is of note because its launch marked the presence, for the first time ever, of thirteen humans in space simultaneously - three aboard the Soyuz, three aboard Mir and seven aboard Space Shuttle Endeavour, flying STS-67.

The spacecraft carried expedition EO-18 to the space station, including the first American astronaut to launch on a Soyuz spacecraft and board Mir, Norman Thagard, for the American Thagard Increment aboard the station, the first Increment of the Shuttle-Mir program. The three crew members it launched were relieved by Space Shuttle Atlantis during STS-71, when they were replaced by expedition EO-19. The crew returned to earth aboard Soyuz TM-21 on September 11, 1995.

Crew

Mission parameters

  • Mass: 7150 kg
  • Perigee: 201 km
  • Apogee: 247 km
  • Inclination: 51.65°
  • Period: 88.7 minutes
  • First Mir docking: March 16, 1995, 07:45:26 UTC
  • First Mir undocking: July 4, 1995, 10:55 UTC
  • Second Mir docking: July 4, 1995, 11:39 UTC
  • Second Mir undocking: September 11, 1995, 03:30:44 UTC