| Name of the satellite | EXOS-A |
|---|---|
| Other name(s) | Kyokko 10664 |
| COSPAR designation | 78-014A |
| Project(s) Manager(s) of the satellite | Kunio Hirao |
| Institute of the project(s) manager(s) | ISAS |
| Country or Space Agency | JPN |
| Link(s) to Web site(s) | http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1978-014A |
| Launch date (dd-mm-yyyy) | 04-02-1978 |
| Termination date (dd-mm-yyyy) | ????? |
| Lifetime of the satellite (month) | ????? |
| Type of the orbits | MEO |
| (Initial) Perigee (km) | 642 |
| (Initial) Apogee (km / Re) | 3977 / 0.6 |
| Orbital period (min / hour) | 134 / 2.2 |
| Spin rate (rpm) | ????? |
| Eccentricity | 0.19188 |
| Inclination (°) | 65.4 |
| Observed regions | Observe the aurora borealis, study aurora-related phenomena, and study the ionosphere and magnetosphere |
| Observed waves | ????? |
| Name of the experiment | Electrostatic Plasma Wave Measurement |