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,
Names of the days of the week - see понедельник Thing (Assembly), of which god Tyr/Ziu was the patron. Mid-week "or" Middle The day between two fasts "(An Dé idir dhá aoin, contracted to An Déardaoin)" (Christianity) The Fast or Fasting Day (Christianity) Good Friday or Preparation (Christianity) "Shabbat" (Jewish Sabbath) Names of the days of the week The names of the days of the week in many languages are derived from the names of the classical planets in Hellenistic astrology, which were in turn named after contemporary deities, a system introduced by the Roman Empire during Late Antiquity. In some other languages, the days are named