90482 Orcus given the designation S/2005 (90482) 1 before later being named "Vanth". It orbits Orcus in a nearly face-on circular orbit with an eccentricity of about 0.007, and an orbital period of 9.54 days. Vanth orbits only from Orcus and is too close to Orcus for ground-based spectroscopy to determine the surface composition of the satellite. Mike Brown suspects that like the Pluto–Charon system, Orcus and Vanth are tidally locked. Vanth does not resemble known collisional satellites because its spectrum is very different from that of its primary, and it may be a captured KBO. Vanth could also have originated as
Orcus (Dungeons & Dragons) Baphomet, allowing Yeenoghu to invade and plunder the plane of Baphomet; Orcus then forced Baphomet into imprisonment, to guard an open platform from intruders until he fulfils all of the conditions that Orcus has decreed. The first edition "Monster Manual II" described the realms of Orcus: "Orcus' manifold layers are populated with skeletal monsters, various sorts of zombies, huecuvae, shadows, sheet phantoms, vampires, and death knights." The first edition "Manual of the Planes" describes the layer of the Abyss ruled by Orcus: "The dwelling of Orcus is a great palace made of bones, rising out of ground bone meal. His