Kepler's Second Law

Steven Dutch, Natural and Applied Sciences,University of Wisconsin - Green Bay
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Kepler's Second Law states that the line from the sun to a planet sweeps out equal areas in equal times. The diagram below illustrates the law. Input the eccentricity of the orbit (small values are nearly circular orbits, large values are very elongated). The ellipse will be divided into sectors of equal area.

Kepler's Second Law is a direct consequence of the conservation of angular momentum.

Semi-major Axis (< 350 recommended): Eccentricity (0 < e < 1):
Longitude of Perihelion: Number of divisions:

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Created 29 November 2010, Last Update 08 July 2014

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