Japan launches navigation satellite on nation's 1st mission of 2025 (video)

Japan launched a navigation satellite early Sunday morning (Feb. 2), the nation's first liftoff of 2025.

An H3 rocket launched the Michibiki 6 spacecraft from Tanegashima Space Center on Sunday at 3:30 a.m. EST (0830 GMT; 5:30 p.m. local Japan time).

The H3 successfully sent the 10,800-pound (4,900-kilogram) Michibiki 6 to geostationary transfer orbit, deploying it there 29 minutes after launch as planned.

A Japanese H3 rocket launches the Michibiki 6 navigation satellite from Tanegashima Space Center on Feb. 2, 2025.

A Japanese H3 rocket launches the Michibiki 6 navigation satellite from Tanegashima Space Center on Feb. 2, 2025. (Image credit: JAXA)

After the satellite makes its way to its final orbit and finishes its checkout phase, it will become the fifth member of Japan's Quasi-Zenith Satellite System (QZSS), which became operational in November 2018.

"This system is compatible with GPS satellites and can be utilized with them in an integrated fashion. In this way, the satellite positioning service environment was advanced dramatically," Japanese officials wrote in a description of the QZSS project.

"QZSW can be used even in the Asia-Oceania regions with longitudes close to Japan, so its usage will be expanded to other countries in these regions as well," they added.

Related: Japan launches military communications satellite on 4th flight of H3 rocket (video)

Sunday's liftoff was the fifth ever for the two-stage H3, which was developed by the Japan Aerospace Exploration Agency (JAXA) and Mitsubishi Heavy Industries to replace Japan's workhorse H-2A rocket.

The H3 failed on its debut mission in March 2023, resulting in the loss of an Earth-observing satellite, but its four most recent flights have been successful.

Editor's note: This story was updated at 4 a.m. ET on Feb. 2 with news of successful launch and satellite deployment.

Join our Space Forums to keep talking space on the latest missions, night sky and more! And if you have a news tip, correction or comment, let us know at: community@space.com.

Mike Wall
Senior Space Writer

Michael Wall is a Senior Space Writer with Space.com and joined the team in 2010. He primarily covers exoplanets, spaceflight and military space, but has been known to dabble in the space art beat. His book about the search for alien life, "Out There," was published on Nov. 13, 2018. Before becoming a science writer, Michael worked as a herpetologist and wildlife biologist. He has a Ph.D. in evolutionary biology from the University of Sydney, Australia, a bachelor's degree from the University of Arizona, and a graduate certificate in science writing from the University of California, Santa Cruz. To find out what his latest project is, you can follow Michael on Twitter.