NASA Announces 10th Planet - It Too To Be Named JVN?

[Chase]

If it were up to me I'd give it a more entertaining name than the kind they usually give to celestial bodies. I'd have some fun with it, I'd call it something like... The Planet Formerly Known as X.

[mechanicalbrain]

I wonder if most of its size comes from it being in the asteroid belt (picking up dust). Please tell me if I'm wrong but isn't that the theory on how the moon was formed. Asteroid hits earth, knocks debris into space then debris forms into large celestial body. Or is this going to be technically a large asteroid like Pluto?