Final launch of an H-IIA rocket.

| Scheduled for (UTC) | 2025-06-28 16:33:03 | |

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| | Scheduled for (local) | 2025-06-29 01:33:03 (JST) | | Launch site | LA-Y1, Tanegashima Space Center, Japan | | Launch vehicle | H-IIA 202 | | Launch provider | Mitsubushi Heavy Industries / JAXA | | Mission success criteria | Successful launch and deployment of GOSAT-GW into Sun-Synchronous Orbit |

Livestreams

| Stream | Link | |

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| | JAXA | https://youtube.com/watch?v=5tRdzj_7OwQ | | The Launch Pad | https://youtube.com/watch?v=_icWwadCMIM |

Stats

☑️ 1st launch from LA-Y1 this year

☑️ 1st H-IIA launch this year, 50th and final overall

Payload info (NextSpaceflight)

GOSAT-GW (Greenhouse Gases Observing Satellite Greenhouse gases and Water cycle), 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.