JAPAN AEROSPACE EXPLORATION AGENCY

H-IIA 202 | GOSAT-GW (Ibuki GW)

SUCCESSJun 28, 2025 at 16:33 UTCH-IIA →
PADYoshinobu Launch Complex LP-1
SITETanegashima Space Center, Japan →
ORBITSun-Synchronous Orbit
TYPEEarth Science

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.

VEHICLE
H-IIA
MISSION
GOSAT-GW (Ibuki GW)
MISSION TYPE
Earth Science
TARGET ORBIT
Sun-Synchronous Orbit
COUNTRY
JPN
CONFIRMED
LAUNCH LIBRARY 2 PRIMARY
API ID: 87d3fde4-e6f6-4e8b-bc9a-d5c28915acb3
Reported date: Jun 28, 2025 at 16:33 UTC
Last synced: 4 hours ago
This launch date and time are confirmed by the launch provider. Countdown is active.
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MANUFACTURER
Mitsubishi Heavy Industries
VARIANT
202
FLIGHTS
35
SUCCESSES
35
SUCCESS RATE
100%

H-IIA (H2A) is an active expendable launch system operated by Mitsubishi Heavy Industries (MHI) for the Japan Aerospace Exploration Agency. The liquid-fueled H-IIA rockets have been used to launch satellites into geostationary orbit, to launch a lunar orbiting spacecraft, and to launch Akatsuki, which studied the planet Venus. Launches occur at the Tanegashima Space Center.

When is the H-IIA 202 | GOSAT-GW (Ibuki GW) launch?
The H-IIA 202 | GOSAT-GW (Ibuki GW) is scheduled for Saturday, June 28, 2025 at 4:33 PM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: SUCCESS.
What rocket is being used for GOSAT-GW (Ibuki GW)?
The H-IIA 202 | GOSAT-GW (Ibuki GW) mission uses the H-IIA rocket, manufactured by Mitsubishi Heavy Industries. The H-IIA has flown 35 times with a 100% success rate.
Where is the H-IIA 202 | GOSAT-GW (Ibuki GW) launching from?
The launch takes place from Yoshinobu Launch Complex LP-1 at Tanegashima Space Center, Japan.
What orbit is GOSAT-GW (Ibuki GW) going to?
The GOSAT-GW (Ibuki GW) mission is targeting Sun-Synchronous Orbit.
Who is launching GOSAT-GW (Ibuki GW)?
The H-IIA 202 | GOSAT-GW (Ibuki GW) is operated by Japan Aerospace Exploration Agency.
Can I watch the H-IIA 202 | GOSAT-GW (Ibuki GW) launch live?
Yes. Visit the launch detail page on Space Launch Live for embedded YouTube webcasts, replay videos, and links to live coverage from SpaceX, NASA, NASASpaceflight, and other channels.
Mar 25, 2026 00:41 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 25, 2026 00:41 UTC
Launch date set: Jun 28, 2025 at 16:33 UTC
NET (No Earlier Than) confirmed by Japan Aerospace Exploration Agency
Mar 25, 2026 00:41 UTC
Launch completed successfully
Updated via Launch Library 2
Last data sync: 4 hours ago
Launch Library 24 hours ago
Launch ID: 87d3fde4-e6f6-4e8b-bc9a-d5c28915acb3
Open-Meteo Weather5 hours ago
Pad weather at 30.4, 130.98
YouTube Video Search2 weeks ago
2 videos discovered