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 59. Mystic philosopher Ibn Arabi surmised that the 99 names are "outward signs of the universe's inner mysteries". There is no universal agreement among Muslims as to what exactly counts as a name of God, and what does not. Additionally, while some names are only in the Quran, and others are only in the hadith, there are some names which appear in both. Different sources give different lists of the 99 names. The following list is based on the one found in the "Jamiʿ at-Tirmidhi" (9th century). Other hadith, such as those of al-Bukhari, Sahih Muslim, Ibn Majah, al-Hakim al-Tirmidhi