INSTITUTE OF SPACE AND ASTRONAUTICAL SCIENCE
Mu-3S-II | Suisei
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Aug 18, 1985 at 23:33 UTC
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MISSION OVERVIEW
Japaneset halley comet flyby mission
LAUNCH DETAILS
VEHICLE
Mu-3S-IIMISSION
Suisei
MISSION TYPE
Robotic Exploration
TARGET ORBIT
Asteroid
LAUNCH PAD
Mu CenterLAUNCH SITE
Uchinoura Space Center, JapanCOUNTRY
JPN
LAUNCH TIME VERIFICATION
CONFIRMEDPrecision: Minute
LAUNCH LIBRARY 2 PRIMARY
API ID: 4978e56c-5487-47ed-af93-2ec52a583de2
Reported date: Aug 18, 1985 at 23:33 UTC
Last synced: 5 minutes ago
This launch date and time are confirmed by the launch provider. Countdown is active.
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PAD WEATHER
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VEHICLE — Mu-3S-II →
MANUFACTURER
Institute of Space and Astronautical Science
VARIANT
S-II
FLIGHTS
8
SUCCESSES
7
SUCCESS RATE
87.5%
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.
FREQUENTLY ASKED QUESTIONS
When is the Mu-3S-II | Suisei launch?
The Mu-3S-II | Suisei is scheduled for Sunday, August 18, 1985 at 11:33 PM UTC. This is the NET (No Earlier Than) time and may be subject to change. Current status: SUCCESS.
What rocket is being used for Suisei?
The Mu-3S-II | Suisei mission uses the Mu-3S-II rocket, manufactured by Institute of Space and Astronautical Science. The Mu-3S-II has flown 8 times with a 87.5% success rate.
Where is the Mu-3S-II | Suisei launching from?
The launch takes place from Mu Center at Uchinoura Space Center, Japan.
What orbit is Suisei going to?
The Suisei mission is targeting Asteroid.
Who is launching Suisei?
The Mu-3S-II | Suisei is operated by Institute of Space and Astronautical Science.
Can I watch the Mu-3S-II | Suisei launch live?
Yes. Visit the launch detail page on Space Launch Live for embedded YouTube webcasts, replay videos, and links to live coverage from SpaceX, NASA, NASASpaceflight, and other channels.
LAUNCH TIMELINE
Mar 29, 2026 23:45 UTC
Launch added to tracker
Imported from Launch Library 2 API
Mar 29, 2026 23:45 UTC
Launch date set: Aug 18, 1985 at 23:33 UTC
NET (No Earlier Than) confirmed by Institute of Space and Astronautical Science
Mar 29, 2026 23:45 UTC
Launch completed successfully
Updated via Launch Library 2
LIVE DATA SOURCES
Last data sync: 5 minutes ago
●Launch Library 25 minutes ago
Launch ID: 4978e56c-5487-47ed-af93-2ec52a583de2
●Open-Meteo Weather2 days ago
Pad weather at 31.25, 131.08
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Mission Profile
Suisei was a Mu-3S-II mission operated by Institute of Space and Astronautical Science that lifted off from Mu Center, Uchinoura Space Center, Japan on August 18, 1985. The flight carried its payload on a robotic exploration mission to Asteroid. The launch was a success.