Institute of Space and Astronautical ScienceLaunch SuccessfulTest Flight

Ohsumi 5

Name: Lambda 4S | Ohsumi 5
Start: 1970-02-11T04:25:00Z
Location: KS Center, Uchinoura Space Center, Japan

Lambda 4S

Launched Wed, Feb 11 · 4:25 AM UTC1970-02-11 04:25 UTCKS Center, Uchinoura Space Center, Japan

Reached orbit

Follow Institute of Space and Astronautical Science in the app Institute of Space and Astronautical Science updates

Success

Reached Low Earth Orbit

Worldwide

13th

orbital launch attempt in 1970

Institute of Space and Astronautical Science

1st

launch this year

KS Center

1st

launch from this pad this year

Pad turnaround

142 d 2 h

since the pad's previous launch

Mission

Ohsumi was a series of five small satellites built to become the first Japanese satellite on orbit.

Launch Provider

Institute of Space and Astronautical Science

Government · Japan

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.

Launches

Successful

75%

Upcoming

scheduled

FliesLambda

All Institute of Space and Astronautical Science launches Website Wikipedia

Lambda 4S

Vehicle history

Height

16.5m

Diameter

0.7m

To low Earth orbit

26kg

Space Launch Now for iOS and Android

Notifications before every launch you follow, live countdowns on your home screen and watch, and webcasts as they start.

See what's in the app

Scan to open on your phone

[data-page-skeleton]{display:none}body{display:flex;flex-direction:column}body>footer{order:2}body>main{padding-bottom:0}body:has(>div[hidden][id^="S:"]>[data-data-unavailable]) header[data-site-header]{background:var(--canvas);border-color:var(--rule);color:var(--ink)}body:has(>div[hidden][id^="S:"]>[data-data-unavailable]) [data-header-scrim]{display:none}body>div[hidden][id^="S:"]>[data-data-unavailable]{max-width:calc(var(--container-content) + 2 * var(--s-5));padding:var(--s-9) var(--s-5) 0}body>div[hidden][id^="S:"]:last-of-type{padding-bottom:var(--s-9)}body:has(>div[id^="S:"] [data-app-promo])>div[hidden][id^="S:"]:last-of-type{padding-bottom:0}@layer base{body>div[hidden][id^="S:"]{display:block!important;order:1}}

Institute of Space and Astronautical ScienceLaunch SuccessfulTest Flight

Ohsumi 5

Lambda 4S

Launched Wed, Feb 11 · 4:25 AM UTC1970-02-11 04:25 UTCKS Center, Uchinoura Space Center, Japan

Reached orbit

Follow Institute of Space and Astronautical Science in the app Institute of Space and Astronautical Science updates

Success

Reached Low Earth Orbit

Worldwide

13th

orbital launch attempt in 1970

Institute of Space and Astronautical Science

1st

launch this year

KS Center

1st

launch from this pad this year

Pad turnaround

142 d 2 h

since the pad's previous launch

Mission

Ohsumi was a series of five small satellites built to become the first Japanese satellite on orbit.

Launch Provider

Institute of Space and Astronautical Science

Government · Japan

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.

Launches

Successful

75%

Upcoming

scheduled

FliesLambda

All Institute of Space and Astronautical Science launches Website Wikipedia

Lambda 4S

Vehicle history

Height

16.5m

Diameter

0.7m

To low Earth orbit

26kg

Next From Uchinoura Space Center

Uchinoura Space Center schedule

NET2026

JV-LOTUSat-1JAXA · Epsilon S · Mu Center, Uchinoura Space Center, JapanSun-Synchronous OrbitTo be determinedNET 2026 Nov—NET

SOLAR-CJAXA · Epsilon S · Mu Center, Uchinoura Space Center, JapanSun-Synchronous OrbitTo be determinedNET November 2028

Space Launch Now for iOS and Android

Notifications before every launch you follow, live countdowns on your home screen and watch, and webcasts as they start.

See what's in the app

Scan to open on your phone

Ohsumi 5

Mission

Institute of Space and Astronautical Science

Lambda 4S

Never Miss a Launch.

Ohsumi 5

Mission

Institute of Space and Astronautical Science

Lambda 4S

Next From Uchinoura Space Center

Never Miss a Launch.

Next From Uchinoura Space Center