Comet Moving about the Sun
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This Demonstration gives you an impression of a comet moving about the Sun according to Newton's and Kepler's laws. According to these laws, the orbit should be hyperbolic, parabolic, or elliptic (a circular orbit is a limiting case of this last). Furthermore, the area swept out by the radius-vector per unit of time will be constant, as is shown here.
Contributed by: Erik Stig Larsen (March 2011)
Open content licensed under CC BY-NC-SA
"Comet Moving about the Sun"
Wolfram Demonstrations Project
Published: March 7 2011