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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.

Alternate Names

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

Facts in Brief

Launch Date: 1967-07-19
Launch Vehicle: Delta
Launch Site: Cape Canaveral, United States
Mass: 230.0 kg

Funding Agency

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


  • Planetary Science
  • Solar Physics
  • Space Physics

Additional Information

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



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