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H-IIA 202 | GOSAT-GW (Ibuki GW)
H-IIA 202 | GOSAT-GW (Ibuki GW) launched on Sat, Jun 28, 2025, 04:33 PM UTC — a Japan Aerospace Exploration Agency mission.
Launch SuccessfulJapan Aerospace Exploration Agency
Lifted offNET Jun 2025
NET Sat, Jun 28, 2025, 04:33 PM UTC
Live coverage
Watch the webcasts
2 streams available — switch between the provider’s feed, X and others.
Mission profile
The flight at a glance
H-IIAVehicle
Japan Aerospace Exploration AgencyProvider
Yoshinobu Launch Complex LP-1Pad
Tanegashima Space Center, JapanLocation
Earth ScienceMission type
Sun-Synchronous OrbitOrbit
Flight simulation
Ascent to orbit
A representative gravity-turn climb for H-IIA to Sun-Synchronous Orbit. Illustrative model — not this mission’s live telemetry.
Mission timeT+0:00
Altitude0.0 km
Velocity0.00 km/s
PhaseLiftoff
T+0:00 / 8:50
SimulatedRepresentative H-IIA ascent profile — illustrative model, not this mission’s live telemetry.
The mission
GOSAT-GW (Ibuki GW)
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.
Around this launch
Related news
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Good to know
Frequently asked
What time does H-IIA 202 | GOSAT-GW (Ibuki GW) launch?
H-IIA 202 | GOSAT-GW (Ibuki GW) is scheduled to lift off Sat, Jun 28, 2025, 04:33 PM UTC.
Where can I watch H-IIA 202 | GOSAT-GW (Ibuki GW)?
Watch the official live webcast embedded on this page — it goes live shortly before liftoff.
Who is launching H-IIA 202 | GOSAT-GW (Ibuki GW)?
H-IIA 202 | GOSAT-GW (Ibuki GW) is an Japan Aerospace Exploration Agency mission flying on a H-IIA.
Where does H-IIA 202 | GOSAT-GW (Ibuki GW) launch from?
It lifts off from Yoshinobu Launch Complex LP-1, Tanegashima Space Center, Japan.