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One question about Parabolic and Hyperbolic trajectory.

  1. Dec 12, 2009 #1
    In the Parabolic and Hyperbolic trajectory.Is the sun in the focus point of parabola and hyperbola?
  2. jcsd
  3. Dec 13, 2009 #2


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    Hi IPhO' 2008! :smile:
    Yup! :biggrin:
  4. Dec 15, 2009 #3
    To be more precise, the focus is at the center of mass (CM) of the two objects. If the body on a parabolic/hyperbolic trajectory had a mass comparable to that of the sun, the CM might be outside the surface of the sun.

    It might interest you that the CM of the Sun-Jupiter system is outside the surface of the sun by about .12 solar radii = 83,500 km.
  5. Dec 17, 2009 #4
    Thank you.
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