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) H1-4 "Bloodstone" series of adventures, by Douglas Niles and Michael Dobson. His involvement was only hinted at in H1 "Bloodstone Pass" (1985) through the activities of his high priest. In H2 "The Mines of Bloodstone" (1986), minions of Orcus are involved in a number of activities and plots, and the authors hint on page 7 that "Orcus has special reasons for being interested in Bloodstone Pass", promising that more will be revealed in module H3. On page 21, it is revealed that evil duergar have built a temple to Orcus underground, involving a series of planar gates through which he