Japan's H3 rocket fails to place QZS‑5 navigation satellite into intended orbit

Japan's H3 rocket experienced a second‑stage anomaly and failed to insert the Michibiki‑5 (QZS‑5) navigation satellite into its planned orbit, JAXA said. The loss — the H3's second failure in the vehicle's early launch history — has prompted a special investigation task force.

Discovered 2025-12-21T21:13:08.036271-08:00 | 2025-12-21T21:13:08.036271-08:00

Briefing

What Hype is tracking

  • The mission loss removed a government navigation asset (Michibiki‑5/QZS‑5) that had been scheduled for deployment on the H3's Flight 8 on Dec. 7, affecting the QZSS constellation rollout: https://hype.aero/?story=7616a465-74c1-4bbc-a3c8-9e46da6ad679

  • A second‑stage anomaly — the H3's reported second failure in seven launches — has immediate implications for launcher reliability and contingency planning across missions that depend on H3 performance, including planned HTV‑X ISS logistics flights: https://hype.aero/?story=875ed5e6-8310-47fb-a529-1a3935a1595d

Reported By

Space Daily Yomiuri Japan News actualidadaeroespacial.com challenges.fr Wings dailygalaxy.com
Sources Tracked
27
First Seen
2025-12-21T21:13:08.036271-08:00
Latest Update
2025-12-28T20:23:52.612849-08:00
Coverage
Space

Sources

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