Bear is derived from the Celtic word for "bear", "artos". In ancient Greece, archaic cult of Artemis in bear form survived into Classical times at Brauron, where young Athenian girls passed an initiation right as "arktai" "she bears". For Artemis and one of her nymphs as a she-bear, see the myth of Callisto. The constellations of Ursa Major and Ursa Minor, the great and little bears, are named for their supposed resemblance to bears, from the time of Ptolemy. The nearby star Arcturus means "guardian of the bear", as if it were watching the two constellations. Ursa Major has been associated
Ursa Major Moving Group group appear to have a common age of about 500 million years. The core of the moving group consists of 14 stars, of which 13 are in the Ursa Major constellation and the other is in the neighboring constellation of Canes Venatici. The following are members of the moving group closest to its center. These stars are all in Ursa Major except where indicated. There is also a "stream" of stars which are likely members of the Ursa Major Moving Group, scattered more widely across the sky (from Cepheus to Triangulum Australe). The bright, nearby star Sirius was long believed