Mu-4S
Mu family
· built by Institute of Space and Astronautical Science
· maiden flight 1970-09-25
Profile data last updated: 2026-08-29T15:37:07.354998+00:00 | 7531-10-17
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.
Specifications
23.6 mLength
1.41 mDiameter
43 tLaunch mass
5Stages
1932 kNLiftoff thrust
Payload Capacity
180 kgTo LEO
Lifetime Launch Record
As reported by Launch Library 2 across this rocket's entire history, not just the launches tracked on this site.
4Total launches
3Successful
1Failed
0Upcoming
Launches Tracked on This Site
4In our archive
75.0%Success rate
Sep 25, 1970 05:00 UTCEarliest tracked
Aug 19, 1972 02:40 UTCMost recent
| Mission | Date | Status |
|---|---|---|
| Mu-4S | Denpa | Aug 19, 1972 02:40 UTC | Success |
| Mu-4S | Shinsei | Sep 28, 1971 04:00 UTC | Success |
| Mu-4S | Tansei-1 | Feb 16, 1971 04:00 UTC | Success |
| Mu-4S | MS-F1 | Sep 25, 1970 05:00 UTC | Failure |