Status
Launch Successful
The launch vehicle successfully inserted its payload(s) into the target orbit(s).
Description
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.
Details
Type
Astrophysics
Orbit
Elliptical Orbit (Elliptical)
Location
Unknown
Date
Sun, Oct 4, 1964, 03:45
Weather
Pro