HTV-X: spacecraft history, specs and record

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.

Record

1 launch, 1 built and flown.

At a glance

• Type: Cargo Resupply
• Built by: Japan Aerospace Exploration Agency
• Status: In use
• Crew: Uncrewed
• First flight: 2025-10-26
• Height: 8 m
• Diameter: 4.4 m
• Payload up: 5,850 kg

History

The maiden flight is scheduled for 2025.

All spacecraft · Japan Aerospace Exploration Agency