Institute of Space and Astronautical ScienceMu-3HMu Center, Uchinoura Space Center, Japan
Jikiken
Launched
September 16, 1978
Summary
Jikiken launched on an Institute of Space and Astronautical Science Mu-3H from Mu Center, Uchinoura Space Center, Japan on September 16, 1978. It was Institute of Space and Astronautical Science's 15th launch, 2nd this year and humanity's 2,135th orbital launch attempt. It was the 3rd Mu-3H flight and the 2nd this year. The payload was bound for Elliptical Orbit (Elliptical). The tracked orbit of Jikiken, one of 3 catalogued objects, from September 20, 1978, was 235 × 30,058 km inclined 31.1°. 3 objects from this launch are catalogued, one of them a payload.
- Watch
- No webcast on record.
- Booster
- No booster details on record.
- Mission
- Earth Science · Elliptical Orbit (Elliptical)
- Milestone
- 3rd Mu-3H flight · 2nd this yearInstitute of Space and Astronautical Science's 15th launch2nd this yearhumanity's 2,135th orbital launch attempt90th orbital launch attempt this year
Flight preview
Orbit: as tracked
Jikiken · NORAD 11027 · 1978-087 · Space-Track · tracking 1 of 3 objects
Show the numbers for orbit elements
- Object
- JIKIKEN (EXOS-B)
- Object ID
- 1978-087A
- Epoch
- 1978-09-20 00:00:00 UTC
- Mean motion
- 2.75049064 rev/day
- Eccentricity
- 0.69299
- Inclination
- 31.0982°
- Ascending node
- 107.1009°
- Arg. of perigee
- 101.7827°
- Mean anomaly
- 240.4404°
- Element set
- 999
- Rev at epoch
- 5
- B*
- 0
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: Elliptical. Ascent drawn from padside's representative profile.
Catalogued objects
3 catalogued: 1 payload, 2 components; 2 still in orbit
- Jikiken · NORAD 11027 · re-entered April 22, 2018
Data from J. McDowell, planet4589.org
About this launch
Japanese magnetospheric research satellite
Pad

Mu Center, Uchinoura Space Center, Japan
10th launch from Mu Center, 2nd this year · 15th from Uchinoura Space Center, Japan
36 launches from this pad · 43 from Uchinoura Space Center, Japan
223 days after the previous launch from this pad
Questions
When did Jikiken launch?
Jikiken launched on September 16, 1978. The time is known to the hour, not the minute.
Where can I watch Jikiken?
No webcast is on record for this launch.
What rocket launched Jikiken?
Mu-3H, flown by Institute of Space and Astronautical Science. Mu-3H spec sheet
Where did Jikiken launch from?
Mu Center, Uchinoura Space Center, Japan.
What orbit did Jikiken reach?
The tracked orbit of Jikiken, one of 3 catalogued objects, from September 20, 1978, was 235 × 30,058 km inclined 31.1°.
How many satellites did Jikiken launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).