GOSAT-GW

Launch Success

Liftoff Time (GMT)

16:33:03

Saturday June 28, 2025

Watch Replay

Official Livestream

Mission Details

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Track Payloads

Launch Notes

Final launch of the H-IIA launch vehicle, and of the whole H-II series.

GOSAT-GW

(Ibuki GW)

Wiki

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 greenhouse 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 2 instruments: * Total Anthropogenic and Natural emissions mapping SpectrOmeter-3 (TANSO-3), for observing concentrations of greenhouse gases, such as carbon dioxide and methane, over a wide area and with high precision for improved estimation accuracy of greenhouse gas emissions * Advanced Microwave Scanning Radiometer 3 (AMSR-3), which will estimate the geophysical quantity of Earth's water on land, sea-surface, and in the atmosphere.

Manufacturer: Mitsubishi Electric

Operator: JAXA

Sun-Synchronous Orbit

1 Payload

2,600 kilograms

Rocket

Retired
H-IIA 202

Active 2001 to 2025

Mitsubishi Heavy Industries logo

Agency

MHI

Price

$90.00 million

Rocket

Height: 53m

Payload to Orbit

LEO: 10,000 kg

GTO: 4,100 kg

Fairing

Diameter: 4.07m

Height: 12m

Stages

2

Strap-ons

2

Launch Site

General Trajectory

SE

SW

Launching

South

LA-Y1

Tanegashima Space Center, Japan

Fastest Turnaround

25 days 4 hours

Stats

H-IIA


50th

Mission

1st

Mission of 2025

Mitsubishi Heavy Industries


1st

Mission of 2025

2025


144th

Orbital launch attempt