Orcus from Anglo-Saxon, a word meaning demon, usually supposed to be derived from the Latin Orcus—Hell. But I doubt this, though the matter is too involved to set out here. From this use, countless other fantasy games and works of fiction have borrowed the concept of the orc. The name "Orcus" appears in the "Dungeons & Dragons" role-playing game as Orcus, Prince of the Undead. Orcus appears as a character in Christopher Moore's "A Dirty Job". The Kuiper belt object 90482 Orcus is named after Orcus. This was because Orcus was sometimes considered to be another name for Pluto, and also
90482 Orcus relatively large satellite (Vanth, see below) may change them considerably. The absolute magnitude of Vanth is estimated at 4.88, which means that it is about 11 times fainter than Orcus itself. If the albedos of both bodies are the same at 0.23 then the size of Orcus is about , and the size of Vanth is about . The ALMA submillimeter measurements taken in 2016 showed that Vanth has a relatively large size of with albedo of about 8% while Orcus' has a slightly smaller size of 910 km. Using a stellar occultation by Vanth in 2017, Vanth's diameter has