Small gravitational perturbations can produce really big orbit shifts over time. The solar system is a quasi-stable system at present, but it can become chaotic at pretty much any time...
I'll just bet that the Earth is not the only wobbly planet. In fact, I'll bet they ALL wobble. How much do they all wobble? A LOT! That's how much! We're in trouble, real big trouble. I for one cannot wait for democrats to be destroyed. They'll be sorry, then!