Institute of Space and Astronautical ScienceMu-3S-IIMu Center, Uchinoura Space Center, Japan
Akebono
Launched
February 21, 1989
Summary
Akebono launched on an Institute of Space and Astronautical Science Mu-3S-II from Mu Center, Uchinoura Space Center, Japan on February 21, 1989. It was Institute of Space and Astronautical Science's 24th launch, 1st this year and humanity's 3,390th orbital launch attempt. It was the 4th Mu-3S-II flight and the 1st this year. The payload was bound for Elliptical Orbit (Elliptical). Akebono, one of 14 catalogued objects, reached a 283 × 10,481 km orbit inclined 75.1°. 14 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
- 4th Mu-3S-II flight · 1st this yearInstitute of Space and Astronautical Science's 24th launch1st this yearhumanity's 3,390th orbital launch attempt16th orbital launch attempt this year
Flight preview
Orbit: as tracked
Akebono · NORAD 19822 · 1989-016 · Space-Track · tracking 1 of 14 objects
Show the numbers for orbit elements
- Object
- EXOS D (AKEBONO)
- Object ID
- 1989-016A
- Epoch
- 1989-02-22 15:55:09 UTC
- Mean motion
- 6.81348804 rev/day
- Eccentricity
- 0.4338518
- Inclination
- 75.0973°
- Ascending node
- 105.6974°
- Arg. of perigee
- 157.8179°
- Mean anomaly
- 226.4237°
- Element set
- 999
- Rev at epoch
- 5
- B*
- 0.0040156
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
14 catalogued: 1 payload, 1 rocket stage, 12 components; none still in orbit
- Akebono · NORAD 19822 · re-entered November 26, 2024
M-3S2-4 Stage 3 · re-entered April 4, 1989
Data from J. McDowell, planet4589.org
About this launch
Japanese upper atmosphere research satellite
Pad

Mu Center, Uchinoura Space Center, Japan
19th launch from Mu Center, 1st this year · 24th from Uchinoura Space Center, Japan
36 launches from this pad · 43 from Uchinoura Space Center, Japan
about 2 years after the previous launch from this pad
Questions
When did Akebono launch?
Akebono launched on February 21, 1989. The time is known to the hour, not the minute.
Where can I watch Akebono?
No webcast is on record for this launch.
What rocket launched Akebono?
Mu-3S-II, flown by Institute of Space and Astronautical Science. Mu-3S-II spec sheet
Where did Akebono launch from?
Mu Center, Uchinoura Space Center, Japan.
What orbit did Akebono reach?
Akebono, one of 14 catalogued objects, reached a 283 × 10,481 km orbit inclined 75.1°.
How many satellites did Akebono launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).