Institute of Space and Astronautical ScienceLambda 4SKS Center, Uchinoura Space Center, Japan
Ohsumi 5
Launched
February 11, 1970
Image: Momotarou2012
Summary
Ohsumi 5 launched on an Institute of Space and Astronautical Science Lambda 4S from KS Center, Uchinoura Space Center, Japan on February 11, 1970. It was Institute of Space and Astronautical Science's 5th launch, 1st this year and humanity's 1,059th orbital launch attempt. It was the 5th Lambda 4S flight and the 1st this year. The payload was bound for low Earth orbit (LEO). It reached a 357 × 5,147 km orbit inclined 31.1°. One object from this launch is catalogued.
- Watch
- No webcast on record.
- Booster
- No booster details on record.
- Mission
- Test Flight · Low Earth Orbit (LEO)
- Milestone
- 5th Lambda 4S flight · 1st this yearInstitute of Space and Astronautical Science's 5th launch1st this yearhumanity's 1,059th orbital launch attempt13th orbital launch attempt this year
Flight preview
Orbit: as tracked
Ohsumi · NORAD 4330 · 1970-011 · Space-Track
Show the numbers for orbit elements
- Object
- OSUMI (LAMBDA-4S)
- Object ID
- 1970-011A
- Epoch
- 1970-02-11 13:36:50 UTC
- Mean motion
- 9.96286251 rev/day
- Eccentricity
- 0.26249
- Inclination
- 31.0692°
- Ascending node
- 244.339°
- Arg. of perigee
- 116.6172°
- Mean anomaly
- 272.6268°
- Element set
- 999
- Rev at epoch
- 4
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: LEO. Ascent drawn from padside's representative profile.
Catalogued objects
1 catalogued: 1 payload; none still in orbit
- Ohsumi · NORAD 4330 · re-entered August 1, 2003
Data from J. McDowell, planet4589.org
About this launch
Ohsumi was a series of five small satellites built to become the first Japanese satellite on orbit.
Pad

KS Center, Uchinoura Space Center, Japan
5th launch from KS Center, 1st this year · 5th from Uchinoura Space Center, Japan
7 launches from this pad · 43 from Uchinoura Space Center, Japan
142 days after the previous launch from this pad
Questions
When did Ohsumi 5 launch?
Ohsumi 5 launched on February 11, 1970. The time is known to the hour, not the minute.
Where can I watch Ohsumi 5?
No webcast is on record for this launch.
What rocket launched Ohsumi 5?
Lambda 4S, flown by Institute of Space and Astronautical Science. Lambda 4S spec sheet
Where did Ohsumi 5 launch from?
KS Center, Uchinoura Space Center, Japan.
What orbit did Ohsumi 5 reach?
It reached a 357 × 5,147 km orbit inclined 31.1°.
How many satellites did Ohsumi 5 launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).
