90482 Orcus Etruscan equivalent of the Roman Pluto, and later became an alternate name for Pluto. The surface of Orcus is relatively bright with albedo reaching 23%, grey in color and water-rich. The ice is predominantly in crystalline form, which may be related to past cryovolcanic activity. Other compounds like methane or ammonia may also be present. The existence of a satellite allowed astronomers to determine the mass of the system, which is approximately equal to that of the Saturnian moon Tethys. The ratio of masses of Orcus and Vanth is uncertain, possibly anywhere from 1:33 to 1:12. The diameter of Orcus
Names of God in Islam God point to a mystical "Most Supreme and Superior Name" ("ismu l-ʾAʿẓam" (). This "Greatest Name of God" is said to be "the one which if He is called (prayed to) by it, He will answer." According to a "hadith" narrated by Abdullah ibn Masud, some of the names of God have also been hidden from mankind. More than 1000 names of God are listed in the Jawshan Kabir ( - literally "the Great Cuirass") invocations. The Arabic names of God are used to form theophoric given names commonly used in Muslim cultures throughout the world, including non-Arabic speaking societies.