Space.com Hi, Ho! ‘Snow White’ the Dwarf Planet Has Its Own Moon 18 May 2017 fborgosano Leave a comment Share: The dwarf planet 2007 OR10, informally known as “Snow White,” has a moon that’s between 150 miles and 250 miles (240 to 400 kilometers) wide, a new study reveals. from Space.com bit.ly/2rwiZoJ Share: