Dīs Pater the Sabine god Soranus. In southern Germany and the Balkans, Dīs Pater had a Celtic goddess, Aericura, as a consort. Dīs Pater was rarely associated with foreign deities in the shortened form of his name, "Dis". Dīs Pater Dīs Pater (pronounced ) was a Roman god of the underworld. Dis was originally associated with fertile agricultural land and mineral wealth, and since those minerals came from underground, he was later equated with the chthonic deities Pluto (Hades) and Orcus. "Dīs Pater" was commonly shortened to simply Dīs and this name has since become an alternative name for the underworld or
90482 Orcus with the normal object naming procedures. Vanth was found at 0.25 arcsec from Orcus with magnitude difference of . Estimates made in 2009 by Mike Brown show that the apparent magnitude of Vanth is which is magnitudes fainter than Orcus. Assuming equal albedos this would mean a diameter of 280 km, or 2.9 times smaller than the primary. However, the dissimilar colors of Orcus (neutral) and Vanth (red) suggest that Vanth could have an albedo a factor of two lower than Orcus. Should Vanth have an albedo of only 0.12, Vanth could be as large as 380 km with Orcus