Mu Normae

Mu Normae is a blue supergiant star of spectral type O9.71ab in the constellation Norma. It is one of the most luminous stars known. Uncertainties in its distance mean it could be up to a million times as luminous and 60 times as massive as the Sun, though is more likely to have around 500,000 times its luminosity and 40 times its mass.. It is suspected of being an Alpha Cygni variable, which are named after the similar star Deneb. Being a blue supergiant, it is likely to become a red supergiant in a few million years and eventually a type-II supernova.

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