Explorer 4
Explorer 4 was an American satellite launched on July 26, 1958. It was instrumented by Dr. James van Allen's group. The Department of Defense's Advanced Research Projects Agency had initially planned two satellites for the purposes of studying the Van Allen radiation belts and the effects of nuclear explosions upon these belts (and the Earth's magnetosphere in general), however Explorer 4 was the only such satellite launched as the other, Explorer 5, suffered launch failure.
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Explorer 4
Explorer 4 was an American satellite launched on July 26, 1958. It was instrumented by Dr. James van Allen's group. The Department of Defense's Advanced Research Projects Agency had initially planned two satellites for the purposes of studying the Van Allen radiation belts and the effects of nuclear explosions upon these belts (and the Earth's magnetosphere in general), however Explorer 4 was the only such satellite launched as the other, Explorer 5, suffered launch failure.
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Explorer 4 war ein Satellit de ...... ktober 1959 in die Atmosphäre.
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Explorer 4 was an American sat ...... e terrestrial radiation belts.
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Explorer 4 – amerykański satel ...... ywca pasów radiacyjnych Ziemi.
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L'Explorer 4 fu un satellite s ...... a molto simile all'Explorer 1.
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O Explorer 4 (também conhecido ...... Army Ballistic Missile Agency.
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«Эксплорер-4» (англ. Explorer- ...... ощения бортовых аккумуляторов.
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エクスプローラー4号（英: Explorer 4、Satel ...... いる。衛星は、454日後の1959年9月3日に軌道減衰した。
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Wikipage page ID
Wikipage revision ID
671,093,043
decay date
1959-10-23
Harvard designation
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last contact
1958-10-05
launch date
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mission duration
6134400.0
mission type
name
operator
orbit arg periapsis
orbit eccentricity
1.279360055923462e-1
orbit epoch
orbit inclination
5.029999923706055e+1
orbit mean anomaly
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orbit RAAN
orbit reference
orbit regime
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Explorer 4 war ein Satellit de ...... ffentlichkeit geheim gehalten.
@de
Explorer 4 was an American sat ...... er 5, suffered launch failure.
@en
Explorer 4 – amerykański satel ...... ywca pasów radiacyjnych Ziemi.
@pl
L'Explorer 4 fu un satellite s ...... a molto simile all'Explorer 1.
@it
O Explorer 4 (também conhecido ...... Army Ballistic Missile Agency.
@pt
«Эксплорер-4» (англ. Explorer- ...... ощения бортовых аккумуляторов.
@ru
エクスプローラー4号（英: Explorer 4、Satel ...... いる。衛星は、454日後の1959年9月3日に軌道減衰した。
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label
Explorer 4
@de
Explorer 4
@en
Explorer 4
@it
Explorer 4
@pl
Explorer 4
@pt
Эксплорер-4
@ru
エクスプローラー4号
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