Does the moon's orbital plane wobble, and what is its period?

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

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