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Explorer 04


Designation 00009 / 58005A
Launch date 26 Jul 1958
Country of origin United States
Mission Scientific: ionosphere study
Perigee/Apogee 257/1352 km
Inclination 50.2°
Period 100.9 min
Launch vehicle Jupiter C
Launch site Cape Canaveral

End of life

Decay 23 Oct 1959

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