Explorer 50

Interplanetary Monitoring Probe, also called IMP 8 or IMP J

General

Designation	06893 / 73078A
Launch date	26 Oct 1973
Country of origin	United States
Mission	Scientific: magnetosphere study
Perigee/Apogee	141185/288857 km mid-1996: 189024/247267 km
Inclination	28.7°
Period	17279 min mid-1996: 17646 min
Launch vehicle	Thor Delta #97

Out of service	Oct 2001
Cause	Fund saving. 6 of the 12 instruments were still operational

Telemetry: 137.98 & 136.8 MHz (32 kbps)
Command: 148.98 MHz

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V0.144 - Converted on Sun, 03 Mar 2024 18:29:57 GMT - Updated quarterly