Another day, another big object beyond Pluto. And this time the finders call it a planet, about one and a half times the size of Pluto, which makes it´s diameter about 3400 kilometers. It´s orbit lays beyond what is now though to be the boundary of the Edgeworth-Kuiper belt. It´s currently 97 AU(1 AU = 149,7 million kilometers) from the Sun, never coming closer than a 67 AU. More.