The planet is at least 1.5 times the size of Pluto. This will, of course, rekindle the debate over whether bodies like it and Pluto are even planets at all. I find myself to be somewhat sentimentalist about all this. Pluto has been historically considered a planet, so it should remain so. This new object is bigger than Pluto and orbits the sun, so in my humble non-expert opinion, it should also be considered a planet. I'd love to hear what other think though.