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Mission typeISS resupply
Spacecraft properties
Spacecraft typeHTV-X
Start of mission
Launch dateJanuary 2024[1][better source needed]
Launch siteTanegashima LA-Y2
Berthing at ISS

HTV-X1 is the first flight and the technical demonstration mission of HTV-X, an uncrewed expendable cargo spacecraft. As of October 2022, it is intended to be launched in January 2024 and to resupply the International Space Station (ISS).[1]


In addition to the primary mission of carrying the resupply cargo to the ISS, HTV-X1 will carry the following payloads:[2]


  1. ^ a b Eric Berger [@SciGuySpace] (26 October 2022). "The debut of Japan's new ISS cargo supply ship, HTV-X, has been delayed from January 2023 to January 2024. It will launch on Japan's H3 rocket, which also has yet to make its debut" (Tweet) – via Twitter.
  2. ^ a b 新型宇宙ステーション補給機(HTV‐X)の開発状況について (PDF) (in Japanese). Ministry of Education, Culture, Sports, Science. 9 February 2021. Retrieved 4 March 2021.