Mitsubishi Heavy IndustriesH3-22Yoshinobu Launch Complex LP-2, Tanegashima Space Center, Japan
H3-22 | Michibiki 7 (QZS-7)
Countdown
No countdown — this launch time is not yet known to the minute.August 10, 2026 · 19:23 UTCAdd to calendar

Image: JAXA
Mitsubishi Heavy Industries's 58th launch · 2nd this year · humanity's 7,362nd orbital launch attempt
The launch vehicle successfully inserted its payload(s) into the target orbit(s).
Window: Aug 10, 19:23 – Aug 10, 20:23 UTC
Flight preview
Michibiki 7 (QZS-7)
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. The navigation system objective is to broadcast GPS-interoperable and augmentation signals as well as original Japanese (QZSS) signals from a three-spacecraft constellation. The navigation system objective is to broadcast GPS-interoperable and augmentation signals as well as original Japanese (QZSS) signals from a three-spacecraft constellation in inclined, elliptical geosynchronous orbits.
Navigation · Geostationary Transfer Orbit (GTO)
Booster
No booster details available.
Watch
- 準天頂衛星システム「みちびき7号機」/H3ロケット9号機打上げライブ中継 — JAXA | 宇宙航空研究開発機構
- 2026.8.11 3:30~ H3ロケット9号機 「みちびき7号機」打上げ H3 Rocket F9 QZS-7 Launch — NVS
Flight timeline
- T−0Liftoff
- T+1M56SSRB Separation
- T+3M44SFairing Separation
- T+4M59SMECO
- T+5M7SStage 2 Separation
- T+5M20SSES-1
- T+12M53SSECO-1
- T+24M28SSES-2
- T+28M50SSECO-2
- T+29M10SPayload Separation
Updates
Launch success.
Cosmic_Penguin · 8/10/2026 · source
Spacecraft separation.
Cosmic_Penguin · 8/10/2026 · source
Liftoff.
Cosmic_Penguin · 8/10/2026 · source
Official Webcast by JAXA | 宇宙航空研究開発機構 has started
LL2 · 8/10/2026 · source
Refined launch window.
Cosmic_Penguin · 8/9/2026 · source
Delayed to NET August 10 UTC due to launch site weather.
Cosmic_Penguin · 8/8/2026 · source
Rescheduled for NET August 9 UTC.
Cosmic_Penguin · 8/7/2026 · source
Delayed due to launch site weather (effects of Typhoon Dolphin).
Cosmic_Penguin · 8/3/2026 · source
NET August 6 UTC.
Cosmic_Penguin · 6/15/2026 · source
Delayed to TBD due to previous H3 launch failure.
Cosmic_Penguin · 1/7/2026 · source
News

U.S. Space Force adds second surveillance sensor to Japanese constellation
The Aug. 10 launch of QZS-7 completes bilateral program to host U.S. sensors aboard Japanese navigation satellites

H3 launches navigation satellite
A Japanese H3 rocket successfully launched a navigation satellite Aug. 10, more than seven months after a similar launch ended in failure.

Launch Preview: Chinese failure opens busy international launch salvo
The week of Aug. 10 opened with an extraordinary Monday, four launches across three countries…
Pad — Yoshinobu Launch Complex LP-2
Local pad time: Aug 11, 4:23 AM GMT+9
18 launches from this pad · 99 from Tanegashima Space Center, Japan
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