Ursa Major is the name of a constellation comprising stars from the head and forelegs of Ursa Major; "pucwan" (ပုဇွန်) is a general term for a crustacean, such as prawn, shrimp, crab, lobster, etc. In Roman mythology, Jupiter (the king of the gods) lusts after a young woman named Callisto, a nymph of Diana. Juno, Jupiter's jealous wife, discovers that Callisto has a son named Arcas, and believes it is by Jupiter. Juno then transforms the beautiful Callisto into a bear so she no longer attracts Jupiter. Callisto, while in bear form, later encounters her son Arcas. Arcas almost shoots the bear,
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