| Name of the satellite | IMP-J |
|---|---|
| Other name(s) | Explorer 50 IMP 8 06893 |
| COSPAR designation | 73-078A |
| Project(s) Manager(s) of the satellite | Paul J. Pashby (retired) |
| Institute of the project(s) manager(s) | NASA-GSFC |
| Country or Space Agency | USA |
| Link(s) to Web site(s) | http://nssdc.gsfc.nasa.gov/database/MasterCatalog?sc=1973-078A
http://nssdc.gsfc.nasa.gov/space/imp-8.html http://www-spof.gsfc.nasa.gov/istp/collaborating/imp8.html |
| Launch date (dd-mm-yyyy) | 26-10-1973 |
| Termination date (dd-mm-yyyy) | ***** |
| Lifetime of the satellite (month) | ***** |
| Type of the orbits | VHO |
| (Initial) Perigee (km) | 140950 |
| (Initial) Apogee (km / Re) | 288500 / 45.2 |
| Orbital period (min / hour) | 17280 / 288 |
| Spin rate (rpm) | 23 |
| Eccentricity | 0.34 |
| Inclination (°) | 28.7 |
| Observed regions | Earth's magnetotail and magnetosheath and of the near-Earth solar wind, magnetospheric boundary regions |
| Observed waves | ULF and VLF waves |
| Name of the first experiment | Magnetic Field Experiment |
| Name of the second experiment | Electrostatic Fields |
| Name of the third experiment | Electrostatic Waves and Radio Noise |