Monday's failure is the second for Japan's new flagship rocket after its botched 2023 debut flight and six successful flights.
The Japan Aerospace Exploration Agency said the H3 rocket carrying the Michibiki 5 satellite took off from the Tanegashima Space Centre on a southwestern Japanese island as part of Japan's plans to have a more precise location positioning system of its own.
The rocket's second-stage engine burn unexpectedly had a premature cutoff and a subsequent separation of the satellite from the rocket could not be confirmed, Masashi Okada, a JAXA executive and launch director, told a news conference.
Whether the satellite was released into space or where it ended up is unknown.
JAXA is investigating the data to determine the cause and other details, Okada said.
Jun Kondo, an official at the Ministry of Education, Culture, Sports, Science and Technology, told reporters the failure was "extremely regrettable" and that the government set up a task force to investigate the cause and take necessary measures as soon as possible to "regain credibility."
Monday's failure is a setback for Japan's new flagship that replaced the earlier mainstay H-2A which had near-perfect success record. It also delays Japan's satellite launch plans, including one to have a more independent geolocation system for smartphones, maritime navigation and drones without relying on the US GPS system.
The H3 rocket is designed to be more cost-competitive in the global space market. Japan sees a stable, commercially competitive space transport capability as key to its space program and national security.
with Reuters
