Altarf, also known as al-Tarf (Arabic for "the tip") and as ß-Cancri, is a star in the constellation Cancer. Arabic can mean: From or related to Arabia From or related to the Arabs The Arabic language; see also Arabic grammar The Arabic alphabet, used for expressing the languages of Arabic, Persian, Malay ( Jawi), Kurdish, Panjabi, Pashto, Sindhi and Urdu, among others. ... The Pleiades star cluster A star is any massive gaseous body in outer space, just like the Sun. ... A constellation is a group of stars visibly related to each other in a particular configuration. ... In astronomy and astrology, Cancer (♋), Latin for crab, is one of the twelve constellations of the zodiac. ...

Altarf has spectral class K2, and, at a stellar magnitude of +3,8, is the brightest star in that constellation. It is approximately 230 light-years from Earth. In astronomy the term spectral class refers to classifying objects according to their spectral lines, which indicate an objects chemical composition. ... K2 , the second highest mountain in the world (official name in China: Qogir; Chinese: 乔戈里峰, Pinyin: Qiáogēlǐ Fēng; also known as Mount Godwin-Austen, Lambha Pahar, Chogori, Kechu or Dapsang) is located in the Karakoram, part of the Himalaya range, in the Taxkorgan Tajik Autonomous County, Xinjiang (China), at the... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ...

Coordinates (equinox 2000) Right ascension 8h16m30s, declination: +9°11'6 "