Ultima Thule is a trans-Neptunian object located in the Kuiper belt. It is a contact binary, with estimated dimensions of 31 by 19 km (20 by 10 mi), consisting of a larger body (“Ultima”) three times the volume of the smaller (“Thule”). With an orbital period of 298 years and a low inclination and eccentricity, it is classified as a classical Kuiper belt object. Due to its...







