Space · launch vehicle
Mu-4S
ISAS
RETIRED
At a glance
Launches
4
Success rate
75%
3 ok · 1 failed
Payload to LEO
180 kg
Payload to GTO
—
Manufacturer
Institute of Space and Astronautical ScienceStatus
RetiredFirst flight
25 Sept 1970Reusable
NoHeight
23.6 mDiameter
1.41 mLaunch mass
43 tLiftoff thrust
1,932 kNStages
5Launch cost
—Booster landings
—Links
WikipediaAbout
The Mu, also known as M, was a series of Japanese solid-fuelled carrier rockets, which were launched from Uchinoura between 1966 and 2006. Originally developed by Japan's Institute of Space and Astronautical Science, Mu rockets were later operated by Japan Aerospace Exploration Agency following ISAS becoming part of it.
Source The Space Devs — Launch Library 2
Last checked 29 Sept 2026