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Tansei 1



Japanese technological test satellite, Tansei, was launched by the Institute of Space and Aeronautical Science, University of Tokyo, from the Kogoshima Space Center. The satellite was a 26-sided body measuring 71.2 cm in diameter across the flat sides. Technological data were recorded by an onboard data recorder and sent back by radio command. The transmitter was operated by chemical batteries and was designed for an estimated lifetime of 1 week. The tracking beacon transmitted continuously, with real-time telemetry.

Alternate Names

  • 04952
  • MS-T1
  • MU-4S-2
  • Tansei1

Facts in Brief

Launch Date: 1971-02-16
Launch Vehicle: M-4S
Launch Site: Uchinoura Space Center, Japan
Mass: 63 kg

Funding Agency

  • Institute of Space and Aeronautical Science, U of Tokyo (Japan)


  • Engineering

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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