Re: Planet?
About the clearing requirement, from the CalTech article:
Unlike the class of smaller objects now known as dwarf planets, Planet Nine gravitationally dominates its neighborhood of the solar system. In fact, it dominates a region larger than any of the other known planets—a fact that Brown says makes it "the most planet-y of the planets in the whole solar system."
Case closed I suppose.
Biting the hand that feeds IT
