Explorer 4
Sign in to saveAmerican research satellite launched in 1958
Wikidata facts
- Mass
- 25.5
- Orbital period
- 110.2
- Image
- Explorer4 instruments.png
Show 8 more facts
- Commons category
- Explorer 4
- UTC date of spacecraft launch
- 1958-07-26
- time of object orbit decay
- 1959-10-23
- semi-major axis of an orbit
- 7616.2
- orbital eccentricity
- 0.127936
- orbital inclination
- 50.3
- apoapsis
- 2213
- periapsis
- 263
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