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) 4th Edition for Dummies" describes Orcus as "the most monstrous evil in the game". Orcus was first presented in the "Eldritch Wizardry" supplement in 1976, by Gary Gygax and Brian Blume, for the original (white box) "Dungeons & Dragons" game. Although the book states that there are several such demon Princes, only Orcus and Demogorgon are detailed, "two of the greatest of these exceptional demon lords". Game statistics for Orcus appear on page 27, while a description of Orcus appears on page 35 with an accompanying illustration, and a description for his "Wand of Orcus" appears on page 42 under