I am a nymph beloved of Zeus and hated bby hera hera changed her into a bear and Zeus then placed her in the sky as the constellation ursa major what moon am i?

You are Callisto, a nymph associated with the constellation Ursa Major. In mythology, Hera transformed you into a bear out of jealousy, and later Zeus placed you in the sky. The moon associated with you is Callisto, one of Jupiter's largest moons.