(225088) 2007 OR 10
(225088) 2007 OR10 is a very large trans-Neptunian object. It is the largest body in the Solar System without a name, estimated to be between Haumea and Sedna in size. Its mass has never been measured, and its diameter is not well known. It has not been formally recognized as a dwarf planet by the IAU, although some astronomers consider it to be one and others consider it likely to be one.