Explorer 04

General

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

Decay

23 Oct 1959

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