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Explorer 50

Interplanetary Monitoring Probe, also called IMP 8 or IMP J


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

End of life

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

External resources

sat-index articles


Technical data

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

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