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IMP-F

NSSDCA/COSPAR ID: 1967-051A

Description

This spacecraft was placed into a high-inclination, highly eccentric earth orbit. The apogee point was located near the ecliptic plane and had an initial local time of about 1900 h. The spacecraft was spin-stabilized and had an initial spin period of 2.6 s. The spin vector was approximately perpendicular to the ecliptic plane. Like the earlier IMPs, this spacecraft was instrumented to study interplanetary magnetic fields, energetic particles, and plasma. The spacecraft optical aspect system failed on 04 March 1969. Otherwise, useful data were acquired until just before spacecraft reentry, which occurred on 03 May 1969.

Alternate Names

  • IMP 4
  • Explorer 34
  • 02817

Facts in Brief

Launch Date: 1967-05-24
Launch Vehicle: Delta
Launch Site: Vandenberg AFB, United States
Mass: 163.0 kg

Funding Agency

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

Discipline

  • Space Physics

Additional Information

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

 

Personnel

NameRoleOriginal AffiliationE-mail
Dr. Frank B. McDonaldProject ScientistNASA Goddard Space Flight Center 
Mr. Paul ButlerProject ManagerNASA Goddard Space Flight Center 
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