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The orbit of the Moon is nearly a perfect circle, but ...
The '''orbits''' of [[planet]]s observable in [[Kepler]]'s times were very circular. [[Comet]]s, on the other hand, have highly [[eccentric]] orbits with only one [[focal point]] inside the [[Sun]].
The orbits of planets observable in Kepler's times were very circular. Comets, on the other hand, have highly eccentric [[orbit]]s with only one focal point inside the sun.
The orbit of the [[Moon]] is nearly a perfect circle, but due to its high relative weight the center of its orbit is actually closer to the Earth's surface than to than it is to the exact center of the Earth.