Polaris Intelligence
Information
Organizations
Products
Spacecraft
Missions
Constellations
Launch Vehicles
Locations
Explorer IV
retired
Admin Edit
Orbit: LEO
Launched 7/26/1958
Technical Specifications
Verified technical details
Dry Mass
12 kg
Total Mass
17 kg
Power
Unknown
Design Life
Unknown
Stakeholders
Operator
U.S. Army
Manufacturer
NASA Jet Propulsion Laboratory
Launch Mission
Explorer 4
7/26/1958