A brilliant star in the constellation Auriga.
Capella is a multiple star system containing at least 9 stars. This bright system is in the Northern Hemisphere, 45 degrees from Polaris (the northern pole star); it is in the constellation Auriga. The two brightest stars in Capella are a binary star system. They are both yellow (like our Sun) with masses 2.6 times and 2.7 times that of the Sun. One is 9 times as large as the Sun, the other is 12 times as large. Each gives off roughy 78 times the light as the Sun. These two stars are about 43 light years from Earth.
Capella (α Aur / α Aurigae / Alpha Aurigae) is the brightest star in the constellation Auriga and sixth brightest star in the sky. Although it appears as a single point to the naked eye, Capella is actually a bright close binary pair of stars along side a second, fainter binary.