A → Kuiper belt object discovered in 2004.
It has a large satellite named Vanth. Orcus is similar to → Quaoar
in size and may be classified as a → dwarf planet.
Named for the ancient Roman god of the underworld, identified with the Greek Pluto, or Hades.
The name was chosen because it shares a similar size, orbit, and orbital inclination
to that of Pluto.
© 2005-2020 by M. Heydari-Malayeri