It's STILL laughed at, at least in the astronomical circles I run in. I don't know what you're looking at, but it's not Eris (unless you've got a private telescope that puts Palomar to shame.) I've got a buddy with a $50,000+ 22 incl reflector with computer controlled tracking and aiming and he can't see any of these objects, including Pluto. Plus, due to the distances involved, there would be no angular momentum that you could discern without photographic comparison.

What makes you think what you're seeing is Eris?