There is no Ursa minor.

Beauty. In Greek mythology, Ursa major is the mother of Ursa minor, and Ursa major was once Zeus' favorite woman, with unparalleled beauty. However, Sheila was jealous the other day and separated her mother from her son, forbidding them to meet. Zeus turned them into constellations, but at the request of Sheila, the other planets can rest, but Ursa minor and Ursa major are not allowed to fall.

The result is now Ursa minor and Ursa major.