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Launch Successful

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

June 28, 2025 at 4:33 PM UTC

Tanegashima Space Center, Japan

H-IIA 202 | GOSAT-GW (Ibuki GW) launch image
Mission imagery · H-IIA 202

Launch details

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June 28, 2025 at 4:33 PM UTC

Status: Launch Successful · Live feed refreshes every 30 seconds

Yoshinobu Launch Complex LP-1

Tanegashima Space Center, Japan · 30.4008, 130.9778

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Rocket
H-IIA 202
Launch site
Yoshinobu Launch Complex LP-1

Tanegashima Space Center, Japan

Launch probability
Not published
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June 28, 2025 at 4:33 PM UTC
Window closes
June 28, 2025 at 4:52 PM UTC
Feed updated
June 29, 2025 at 2:13 AM UTC

Mission description

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 media

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Launch of “IBUKI GW”(GOSAT-GW) aboard H-IIA Launch Vehicle No.50

Full video record
Vehicle

H-IIA 202

H-II · 202

Height

53 m

Diameter

4 m

LEO capacity

10,000 kg

Successful launches

35

Launch complex

Yoshinobu Launch Complex LP-1

Tanegashima Space Center, Japan

The Tanegashima Space Center is the largest rocket-launch complex in Japan. It is located on the southeastern tip of Tanegashima, an island located south of Kyushu, an island and region and Japan. It was established in 1969 when the National Space Development Agency of Japan (NASDA) was formed, and is now run by JAXA. The activities that take place at TNSC include assembly, testing, launching, and tracking satellites, as well as rocket engine firing tests.

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Mission updates

Launch success.

June 28, 2025 at 6:49 PM UTC · Cosmic_Penguin

Spacecraft separation.

June 28, 2025 at 4:55 PM UTC · Cosmic_Penguin

Liftoff.

June 28, 2025 at 4:33 PM UTC · Cosmic_Penguin

Rescheduled for June 28 UTC.

June 24, 2025 at 5:10 AM UTC · Cosmic_Penguin

Launch delayed due to 2nd stage electrical system problem; new launch date TBD.

June 19, 2025 at 8:26 AM UTC · Cosmic_Penguin