Mike Brown of Caltech, Chad Trujillo of Gemini and David Rabinowitz of Yale
Orbit of 2003 UB313
Approximate relative orbital sizes (top) and relative diameters (below). Note that it appears UB 313 passes inside Pluto's orbit, but this is due to the fact that UB 313s orbit is tilted significantly more than Pluto's orbit relative to the plane of the solar system (UB 313s orbit is tilted almost 45° and Pluto's is about 17°).
