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Mu Columbae
Star
Mu Columbae is a star in the constellation of Columba. It is one of the few O-class stars that are visible to the unaided eye. The star is known to lie approximately 1,900 light years from the Solar System. This is a relatively fast rotating star... Wikipedia
Temperature: 33,400�300 K
Luminosity: 43,650+4,210; −3,840 L☉
Apparent magnitude (V): 5.18