GOSAT-GW (Ibuki GW)
H-IIA 202, Japan Aerospace Exploration Agency
Yoshinobu Launch Complex LP-1, Tanegashima Space Center, Japan
Launch time
Window opens
Sat 28 Jun, 18:33:03 CEST
16:33:03 UTC
The rocket put its payload into the planned orbit.
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How sure is this date?
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Launch record updated by LL2
Feed checkedMission
GOSAT-GW (Ibuki GW) on H-IIA 202. Sat 28 Jun 2025, 16:33:03 UTC. Reported outcome: Success. Launch site: Yoshinobu Launch Complex LP-1. Source: Launch Library 2.
GOSAT-GW (Greenhouse Gases Observing Satellite Greenhouse gases and Water cycle), also known as Ibuki GW and formerly known as GOSAT 3, is JAXA's next generation satellite to monitor the greenhosue gases like carbon dioxide in the Earth's atmosphere. It is the follow on to the GOSAT 2 (Ibuki 2) and GCOM-W (Shizuku) missions. GOSAT-GW will have two missions: greenhouse gases observation for Japan's Ministry of the Environment and the National Institute for Environmental Studies (NIES), and water-cycle observation for JAXA. By developing the GOSAT-GW satellite, Mitsubishi Electric will contribute to measures for preventing disasters attributed to global warming and climate change, and to advance scientific and technological methods that enable more accurate prediction of climate change. In December 2013, Mitsubishi Electric (MELCO) was selected as the prime contractor for the spacecraft and the instruments.
- Mission type
- Earth Science
- Orbit
- Sun-Synchronous Orbit
Launch timeline
No timeline has been provided by the source.
Slip history
Changes recorded by Space Right Now
No changes since we started tracking on .
Source updates from Launch Library 2 (10)
Announcements supplied by LL2 may predate our tracking. They are separate from changes observed by Space Right Now.
- LL2 update
Launch success.
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Spacecraft separation.
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Liftoff.
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Rescheduled for June 28 UTC.
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Launch delayed due to 2nd stage electrical system problem; new launch date TBD.
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GO for launch.
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NET June 23 UTC/early morning June 24 JST.
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NET June 2025.
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NET Q2 due to satellite testing delays.
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Tweaked approximate launch date per launch manifest (P.129 of source).
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Launch pad
Yoshinobu Launch Complex LP-1
Tanegashima Space Center, Japan (JP)
Coordinates: 30.400813, 130.977748
View launch pad on a map