30Tau CMa

30Tau CMa is a O-type (Blue) star located in the constellation Canis Major. It carries the designation 30Tau CMa.

At a distance of roughly 2,992 light-years, 30Tau CMa is a distant star lying deep within the Milky Way galaxy.

30Tau CMa is classified as a spectral class O star (O-type (Blue)) on the Harvard spectral classification system.

With an apparent magnitude of +4.37, 30Tau CMa sits near the limit of naked-eye visibility. It can be glimpsed without optical aid under dark skies, but binoculars will make observation much easier. Observers will note its blue hue, which corresponds to a B-V color index of -0.132.