Institute of Space and Astronautical Science

At a glance

Launches

32

Success rate

75%

24 ok · 8 failed

Current streak

1

consecutive successes

Booster landings

—

none attempted

Type

Government

Country

Japan

Founded

—

Administrator

—

Abbreviation

ISAS

Links

Website · Wikipedia

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About

ISAS is a Japanese national research organization of astrophysics using rockets, astronomical satellites and interplanetary probes which played a major role in Japan's space development.

Built by ISAS

Vehicles

6 FLOWN

Rank	Vehicle	Launches	Payload to LEO	First flight
01	Mu-3S-II	8 launches	800 kg	1985
02	Lambda 4S	5 launches	26 kg	1966
03	Mu-4S	4 launches	180 kg	1970
04	Mu-3C	4 launches	195 kg	1974
05	Mu-3S	4 launches	300 kg	1980
06	Mu-3H	3 launches	300 kg	1977

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Source The Space Devs — Launch Library 2 Last checked 29 Sept 2026

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