Alpha CentauriAl·pha Cen·tau·ri
a binary star, the brightest star in the constellation Centaurus: magnitude, –0.01: it is the nearest of the stars that are visible to the naked eye, except for the sun
A multiple star in Centaurus, 4.4 light years from Earth, whose three components form the brightest object in the constellation and the third brightest star in the night sky.
- (astronomy) The brightest star in the southern constellation of Centaurus. It is actually a binary star with Proxima Centauri as a third component.
From α (brightest) + Centauri ("of the constellation Centaurus")