Thanks to this star, the constellation is unmistakable, as the bluish Vega is the fifth brightest star in the sky (0.04 mag). Together with the stars Deneb in Cygnus and Altair in Aquila, Vega forms the Summer Triangle. Its distance from Earth is estimated to be 25 light-years, and it outshines our Sun by a factor of 40, with an absolute magnitude of +0.5. Two faint companions do not form part of the physical system.