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Stellar Wobbles

  1. Feb 26, 2005 #1
    A little question: as a planet (such as jupiter) orbits the sun, both the planet, and the sun orbit the same point of the centre of mass. how do you calculate where that centre of mass is?
    (2 body problem only)


  2. jcsd
  3. Feb 26, 2005 #2


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    The two moment-arms should be equal, so massJuptiter * DistanceJupiter-COM = MassSun * DistanceSun-COM.
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