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M-3SII Launch Vehicle

M-3SII was the fourth-generation Mu-series solid launch vehicle developed by Japan's Institute of Space and Astronautical Science. The three-stage rocket could add a kick stage for escape missions and launched Japan's first interplanetary probes along with major X-ray, auroral, lunar, and solar observatories.

M-3SII Launch Vehicle
NARITA Masahiro (Naritama) · The exact stored asset is 1280x960 with SHA-256 3150eee63c1d2c02c95bb548ef3e98f6aebfdf533f45fcc0181cd606b0269230. It byte-matches the current Wikimedia Commons file M-3SII exhibition model.jpg. The Commons record identifies NARITA Masahiro (Naritama) as the author and grants Creative Commons Attribution-ShareAlike 3.0 International, with the GNU Free Documentation License 1.2 or later also offered: https://commons.wikimedia.org/wiki/File:M-3SII_exhibition_model.jpg and https://creativecommons.org/licenses/by-sa/3.0/. Reuse is permitted under CC BY-SA 3.0 with attribution, a license link, and indication of changes if modified. The asset depicts the ISAS/JAXA Sagamihara Campus M-3SII full-scale exhibition model; this asset-level credit does not imply JAXA endorsement or assert that every placement depicts a distinct M-series variant. · Source
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Identity

Aliases
Mu-3SIIM-3S2M-3S IIM-3SⅡロケット
Family Name
M-3SII
Full Name
M-3SII Launch Vehicle
Status
retired
Type
rocket

Details

Description
M-3SII was the fourth-generation Mu-series solid launch vehicle developed by Japan's Institute of Space and Astronautical Science. The three-stage rocket could add a kick stage for escape missions and launched Japan's first interplanetary probes along with major X-ray, auroral, lunar, and solar observatories.
Dimensions
Diameter M
1.41
Height M
27.8
First Flight Year
1,985
Last Flight Year
1,995
Parent Vehicle Family
Rocket Specs
Liftoff Mass Kg
61,000
Payload Capacity Kg
Leo
770
Reusability
expendable
Stages Count
3
Strap On Boosters Count
2

Links

Assets & Meta

Creation Time
July 13, 2026 at 11:55:09 UTC
Updated Time
July 19, 2026 at 12:27:39 UTC

Other

Search Name
M-3SII Launch Vehicle Mu-3SII M-3S2 M-3S II M-3SⅡロケット