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18-July-2009, 12:17 AM
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The moon's orbit precesses in the ecliptic plane, so the nodes move continuously, regressing once around the sky every 18.6 years.
So, yes, when the moon passes through its ascending node on the ecliptic, it's in a different place on each successive month. It doesn't go farther from the ecliptic each time, since the inclination of its orbit is reasonably constant. Grant Hutchison 
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