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Question about the orbiting plane of the moon

  1. Sep 24, 2008 #1
    I know that the moon orbits the earth in a plane that inclines about 5 degrees with the earth orbting plane (around the sun). My question is does the moon orbiting plane wobble or it hold still? If it wobbles, what is the period?
     
    Last edited: Sep 24, 2008
  2. jcsd
  3. Sep 24, 2008 #2

    Janus

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    It wobbles, or more properly, undergoes precession, with a period of 18.6 years.
     
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