15 Ursae Majoris

15 Ursae Majoris (15 UMa) is a star in the constellation Ursa Major. Its apparent magnitude is 4.50.

15 UMi is Metallic-lined star, meaning it has unusually strong absorption lines of metals in its spectrum. Classification of the spectrum is difficult due to the peculiarities. An MK classification of 15 UMi using the Calcium K line is A3 V, but using metallic spectral lines it can appear as a cooler and more luminous star. Spectral lines in the blue region give a classification of F5 Ib, while in the violet region the lines suggest F5 III/IV.