Explorer 28

Interplanetary Monitoring Probe, also called IMP 03

General

Designation	01388 / 65042A
Launch date	29 May 1965
Country of origin	United States
Mission	Scientific: magnetosphere study
Perigee/Apogee	229/261206 km
Inclination	30.5°
Period	8419.7 min
Launch vehicle	Thor Delta #31

Decay

4 Jul 1968

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