Institute of Space and Astronautical ScienceMu-4SMu Center, Uchinoura Space Center, Japan
Denpa
Launched
August 19, 1972
Summary
Denpa launched on an Institute of Space and Astronautical Science Mu-4S from Mu Center, Uchinoura Space Center, Japan on August 19, 1972. It was Institute of Space and Astronautical Science's 9th launch, 1st this year and humanity's 1,376th orbital launch attempt. It was the 4th Mu-4S flight and the 1st this year. The payload was bound for Elliptical Orbit (Elliptical). Denpa, one of 2 catalogued objects, reached a 246 × 6,333 km orbit inclined 31.0°. 2 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-4S flight · 1st this yearInstitute of Space and Astronautical Science's 9th launch1st this yearhumanity's 1,376th orbital launch attempt70th orbital launch attempt this year
Flight preview
Orbit: as tracked
Denpa · NORAD 6152 · 1972-064 · Space-Track · tracking 1 of 2 objects
Show the numbers for orbit elements
- Object
- DENPA (REXS)
- Object ID
- 1972-064A
- Epoch
- 1972-08-20 20:08:56 UTC
- Mean motion
- 9.143285 rev/day
- Eccentricity
- 0.3150191
- Inclination
- 31.0276°
- Ascending node
- 41.6193°
- Arg. of perigee
- 127.6298°
- Mean anomaly
- 265.3974°
- Element set
- 999
- Rev at epoch
- 18
- 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
2 catalogued: 1 payload, 1 rocket stage; none still in orbit
- Denpa · NORAD 6152 · re-entered May 19, 1980
M-4S-4 Stage 4 · re-entered April 28, 1981
Data from J. McDowell, planet4589.org
About this launch
Japanses ionospheric research satellite
Pad

Mu Center, Uchinoura Space Center, Japan
4th launch from Mu Center, 1st this year · 9th from Uchinoura Space Center, Japan
36 launches from this pad · 43 from Uchinoura Space Center, Japan
325 days after the previous launch from this pad
Questions
When did Denpa launch?
Denpa launched on August 19, 1972. The time is known to the hour, not the minute.
Where can I watch Denpa?
No webcast is on record for this launch.
What rocket launched Denpa?
Mu-4S, flown by Institute of Space and Astronautical Science. Mu-4S spec sheet
Where did Denpa launch from?
Mu Center, Uchinoura Space Center, Japan.
What orbit did Denpa reach?
Denpa, one of 2 catalogued objects, reached a 246 × 6,333 km orbit inclined 31.0°.
How many satellites did Denpa launch?
1 payload from this launch is catalogued, no longer in orbit (Data from J. McDowell, planet4589.org).