This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: "HTV-X1" – news · newspapers · books · scholar · JSTOR (March 2021) (Learn how and when to remove this template message)
Mission typeISS resupply
Spacecraft properties
Spacecraft typeHTV-X
Start of mission
Launch date2025 (planned)[1]
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 December 2023, it is intended to be launched in 2025 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 "宇宙基本計画⼯程表 (令和5年度改訂)" [Basic Plan on Space Policy (2023 Revision)] (PDF) (in Japanese). Cabinet Office. 22 December 2023. p. 45. Archived (PDF) from the original on 25 December 2023. Retrieved 26 December 2023.
  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.