90482 Orcus This means that Orcus is currently viewed pole-on, which could explain the near absence of any rotational modulation of its brightness. If, however, the primary is tidally locked with the satellite, the rotational period will coincide with the 9.7-day orbital period of Vanth. This minor planet was named after one of the Roman gods of the underworld, Orcus. While Pluto was the ruler of the underworld, Orcus was a punisher of the damned. The approved naming citation was published by the Minor Planet Center on 26 November 2004 (). Under the guidelines of the International Astronomical Union's (IAU) naming conventions,
Tomb of Orcus "during the magistracy of Velu Hulchnie", found elsewhere in the tomb). According to this interpretation, the phrase would translate: Le[ive] erected this monument for posterity [during the magistracy] of Larth Hulchnie and Marce Caliathe. "Marce" is probably a cognate or preform of "Marcus". "Hulchnie" is generally interpreted as the Roman gens "Fulcinius", and "Larth" is believed to be akin to the Greek name "Laertēs"; some have suggested that "Larth Hulchnie" means "Hulchnie, son of Larth". Tomb of Orcus The Tomb of Orcus (), sometimes called the Tomb of Murina (), is a 4th-century BC Etruscan hypogeum (burial chamber) in Tarquinia,