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Explorer 35



Explorer 35 was a spin-stabilized spacecraft instrumented for interplanetary studies, at lunar distances, of the interplanetary plasma, magnetic field, energetic particles, and solar X rays. It was launched into an elliptical lunar orbit. The spin axis direction was nearly perpendicular to the ecliptic plane, and the spin rate was 25.6 rpm. Mission objectives were achieved. After successful operation for 6 years, the spacecraft was turned off on June 24, 1973. The orbit would have naturally decayed afer this point, resulting in an impact on the Moon at an unknown time and location.

Alternate Names

  • Anchored IMP 2
  • AIMP-E
  • AIMP 2
  • 02884
  • Explorer35
  • IMP-E

Facts in Brief

Launch Date: 1967-07-19
Launch Vehicle: Delta
Launch Site: Cape Canaveral, United States
Mass: 230 kg

Funding Agency

  • NASA-Office of Space Science Applications (United States)


  • Planetary Science
  • Space Physics
  • Solar Physics

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
Dr. Alois W. SchardtGeneral ContactNASA Headquarters
Mr. John J. BrahmGeneral ContactNASA Goddard Space Flight Center
Mr. Jerome BarskyGeneral ContactNASA Goddard Space Flight Center
Mr. Frank W. GaetanoGeneral ContactNASA Headquarters
Mr. Paul L. HeffnerGeneral ContactNASA Goddard Space Flight Center
Mr. Paul G. MarcotteProject ManagerNASA Goddard Space Flight Center
Dr. Norman F. NessProject ScientistNASA Goddard Space Flight
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