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Explorer 4

American research satellite launched in 1958.

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Wikipedia | Explorer 4

Statements about Explorer 4

Image

Start Point

Cape Canaveral Launch Complex 5

Significant Event

Rocket Launch
 (7/26/1958)
Location
:
Cape Canaveral Launch Complex 5
Point in Time
: 7/26/1958

Instance Of

Research Satellite

Mass

25.5 kilogram

Semi-Major Axis of an Orbit

7,616.2 kilometre

Orbital Eccentricity

0.128

Orbital Inclination

50.3 degree

Orbital Period

110.2 minute

Apoapsis

2,213 kilometre

Periapsis

263 kilometre

Parent Astronomical Body

Earth
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