Photo: NOAA Photo Library · Public domain (US government)
About this launch
Explorer 21 (IMP 2) was a solar-cell and chemical-battery powered spacecraft instrumented for interplanetary and distant magnetospheric studies of energetic particles, cosmic rays, magnetic fields, and plasmas.
More about this launch
Flight profileThe climb, seen from the side · 3D replay on the globe
Launch window and padCape Canaveral SFS, FL, USA
- Site
- Cape Canaveral SFS, FL, USA
Rocket and boosterThor Delta C
- Vehicle
- Thor Delta C
Thor Delta C: specs, record and next flights → US Air Force: all its launches →
MissionAstrophysics · Elliptical
Astrophysics · Elliptical
What it put in orbit1 catalogued object
| Object | Type | Orbit | Globe |
|---|---|---|---|
| EXPLORER 21 (IMP-2) 1964-060A | Payload | re-entered 1966-01-30 |
COSPAR ID 1964-060. Orbits from the CelesTrak satellite catalogue (perigee × apogee, inclination).
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