I suppose that makes sense... if something is in an orbit that's flattened down until it's only slightly off from being a straight line in and out, then any ver

I suppose that makes sense... if something is in an orbit that's flattened down until it's only slightly off from being a straight line in and out, then any very slight perturbations could really affect how close it comes to the sun on the next pass. The sun moves too a little bit, due to the pull of the planets. Maybe it's enough to make a difference?