(55565) 2002 AW197
(55565) 2002 AW197 is a classical trans-Neptunian object from the Kuiper belt. It has a diameter of at least 700 kilometers ( i. e 430 miles). It is the largest unnamed object in the Solar System and the largest planetoid without a moon. It was discovered at Palomar Observatory in 2002. It has a rotation period of 8.8 hours.