this post was submitted on 16 Dec 2025
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🇯🇵 [JAXA / MHI] Michibiki 5 launch thread (sh.itjust.works)
submitted 10 months ago* (last edited 10 months ago) by threelonmusketeers@sh.itjust.works to c/spaceflight@sh.itjust.works
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| Scheduled for (UTC) | 2025-12-22 01:51 | |

|

| | Scheduled for (local) | 2025-12-22 10:51 (JST) | | Launch site | LA-Y2, Tanegashima Space Center, Japan. | | Launch vehicle | H3-22S | | Launch provider | Mitsubushi Heavy Industries / JAXA | | Mission success criteria | Successful launch and deployment of Michibiki 5 into Geostationary Transfer Orbit |

Livestreams

| Stream | Link | |

|

| | JAXA webcast (English) |  | | JAXA webcast (Japanese) |https://youtube.com/watch?v=p9WlvRyJaW0 (scrub) | | The Launch Pad | https://youtube.com/watch?v=BgOowvKVD7U (scrub) |

Stats

☑️ 3rd H3 launch this year, 7th overall

Payload info (NextSpaceflight)

Michibiki 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.

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[–] threelonmusketeers@sh.itjust.works 0 points 10 months ago* (last edited 10 months ago)

https://global.jaxa.jp/press/2025/12/20251222-2_e.html

the second stage engine’s second ignition failed to start normally and shut down prematurely

Dang. Not the best way for H3 to round out the year.