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Michibiki 5
Launch Failure
Liftoff Time (GMT)
01:51:30
Monday December 22, 2025
Watch Replay
Official Livestream
Mission Details
Launch Notes
2nd stage liquid hydrogen tank pressure abnormally start decreasing after fairing separation, leading up to 2nd stage 1st burn 27 seconds longer than planned & engine shutting down 1 second into 2nd burn. Payload stranded in LEO and re-entered shortly after.
Michibiki 5
(QZS-5)
QZSS (Quasi Zenith Satellite System) is a Japanese satellite navigation system operating from inclined, elliptical geosynchronous orbits to achieve optimal high-elevation visibility in urban canyons and mountainous areas, as well as from geostationary orbits. The navigation system objective is to broadcast GPS-interoperable and augmentation signals as well as original Japanese (QZSS) signals from a seven-spacecraft constellation.
Manufacturer: Mitsubishi Electric Corporation
Operator: Japan Cabinet Office
Geostationary Transfer Orbit
1 Payload
4,800 kilograms
Launch Site
NE
SE
Launching
East
Stats
H3
7th
Mission
3rd
Mission of 2025
2025
314th
Orbital launch attempt