Story perspectives

Japan’s H3 Rocket Launches Six Satellites, Paving Future Missions

6/13/2026

Summary

Story summary

Japan launched the H3 rocket from Tanegashima on June 11, reaching its target orbit.
The launch used the “30 configuration,” three LE-9 liquid-fuel engines and no solid boosters, marking the first all-liquid domestic launch since December 2025.
Six university and research satellites—including Umitsubame, Shiraito, and BRO-22—were deployed and successfully separated.
JAXA said the success opens the HTV-X cargo flight, the 2026 MMX sample-return mission, and a goal of six-to-eight H3 launches annually.

History

Historical Context

In February 2001 Mitsubishi Heavy Industries launched the H-IIA from Tanegashima, placing the 1,300-kg MTSAT-1 satellite into orbit and proving Japan’s domestically built liquid-propellant stage, a capability first achieved with the 1994 H-II. After JAXA’s 2003 merger unified the program, the all-liquid design underpins today’s H3 rocket, targeting six-to-eight flights per year.

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Story summary

Japan launched the H3 rocket from Tanegashima on June 11, reaching its target orbit.
The launch used the “30 configuration,” three LE-9 liquid-fuel engines and no solid boosters, marking the first all-liquid domestic launch since December 2025.
Six university and research satellites—including Umitsubame, Shiraito, and BRO-22—were deployed and successfully separated.
JAXA said the success opens the HTV-X cargo flight, the 2026 MMX sample-return mission, and a goal of six-to-eight H3 launches annually.

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