New Delhi, Oct. 27 -- Japan's space agency successfully launched Sunday its most powerful flagship H3 rocket, carrying a newly developed unmanned cargo spacecraft for its first mission to deliver supplies to the International Space Station.

The Japan Aerospace Exploration Agency said the HTV-X1 spacecraft successfully lifted off atop the No. 7 H3 rocket from Japan's Tanegashima Space Center in the country's south and confirmed it entered targeted orbit 14 minutes after liftoff.

The spacecraft was separated and placed into a planned orbit, JAXA said. If everything goes smoothly, it is expected to arrive at the ISS in a few days to deliver supplies. Japanese astronaut Kimiya Yui, currently at the ISS, is set to catch the craft with a robo...