Key statistics
Satellite EXPLORER 4 at a glance.
Uptime
454
Days in orbit
Revolutions
N/A
Per day
Orbit
LEO
Low Earth Orbit
Inclination
N/A
Latest
Satellite identification and parameters
Extended collection of information and parameters for EXPLORER 4.
Object identification
Object name: EXPLORER 4
International designator: 1958-005A
Object number (NORAD): 9
Object ID (CCSDS): 9
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
Orbital parameters
Decay date: Oct. 23, 1959
Inclination: 50.25 deg
Period: 92.81 minutes
Apoapsis: 585.0 km
Periapsis: 239.0 km
Two-line elements (TLE)
No TLE available, as this satellite has decayed and is no longer in orbit.
Live tracking on map
Satellite EXPLORER 4 has decayed and is no longer in orbit. No tracking available.
Associated space launch
An American satellite in order to study the Van Allen radiation belts and the effects of nuclear explosions upon these belts.
EXPLORER 4 was lifted into orbit during the mission ‘Juno-I | Explorer 4’, on board a Juno-I space rocket.
The launch took place on July 26, 1958, 3 p.m. from Launch Complex 5.
For more information about the launch, click the button.
Juno-I | Explorer 4
Agency: N/A
Status: Launch Successful
Launch date: July 26, 1958, 3 p.m. UTC
Rocket: Juno-I
Launch pad: Launch Complex 5
Location: Cape Canaveral SFS, FL, USA
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