A constellation of the northern sky, representing a charioteer. Its brightest star is Capella (Alpha Aurigae). Auriga contains three 6th-magnitude open clusters, M36, M37, and M38. Epsilon Aurigae is a long-period eclipsing binary. Zeta Aurigae is another eclipsing binary, varying between magnitudes 3.7 and 4.0 with a period of 972 days; it is the prototype of the Zeta Aurigae stars.