HTV-X
JPN Official site 
Built & Operated By
Japan Aerospace Exploration Agency
Government · founded 2003
Maiden Flight
26 OCT 2025
Flight Life
6 Months docked, 18 months post-mission free flight
About
The HTV-X is Japan’s next-generation cargo spacecraft designed to deliver supplies, experiments, and equipment to the International Space Station. Building on the legacy of the original HTV, it features upgraded automation and reduced weight. Its reliable performance supports Japan’s role in international space exploration and the Artemis program.
Spacecraft Specifications
Height
8 m
Diameter
4.4 m
Payload Capacity
5,850 kg
Rating
Uncrewed
Capability
ISS Resupply
Operational History
The maiden flight is scheduled for 2025.