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Developed and built in Japan, the H-II Transfer Vehicle (HTV) known as "KOUNOTORI (meaning 'white stork' in Japanese)" is an unmanned cargo transfer spacecraft that delivers supplies to the International Space Station (ISS). "KOUNOTORI" provides very basic support for ISS operations by delivering up to six tons of cargo and has the world's largest transportation capacity. It also has the unique function of carrying multiple numbers of large-size experimental instruments on one flight.

Alternate Names

  • HTV8
  • 44546

Facts in Brief

Launch Date: 2019-09-24
Launch Vehicle: H-2B
Launch Site: Tanegashima, Japan
Mass: 16500 kg

Funding Agency

  • Japan Aerospace Exploration Agency (Japan)


  • Resupply/Refurbishment/Repair

Additional Information

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

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