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Finding the eccentricity of Earth's orbit

  1. Jan 11, 2006 #1
    Given the mass of the sun, the gravitational constant, the period of Earth's orbit, and the semi-major axis of Earth's orbit, is it possible to find the eccentricity of the orbit? If yes, how?
     
  2. jcsd
  3. Jan 11, 2006 #2

    Tom Mattson

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    Kindly post your own thoughts on the matter, as per the Physics Forums Guidelines, which you agreed to.
     
  4. Jan 11, 2006 #3
    I'm really not sure if it can be done. If it can I don't know how. I guess that maybe it can't be done, since there appears to be no way to find to foci.

    This is not actually a homework question by the way.
     
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