Auriga (constellation)

Auriga (the charioteer) is a northern constellation. It was one of the 48 constellations listed by Ptolemy, and counts is one of the 88 modern constellations. Its brightest star is Capella, which is associated with the mythological she-goat Amalthea. The three stars Epsilon, Zeta and Eta Aurigae are called the "Kids".

Notable features

Two peculiar binary stars, ε Aurigae and ζ Aurigae. ε Aurigae is one of the strangest binary stars. The orbital period is about 27 years, with an eclipse duration of about 18 months. The visible companion is a yellowish (F-class)supergiant. The type of the other star is not known. ζ Aurigae has a period of 970 days, the primary is a (K-class)supergiant and the secondary is a (B-class) main sequence star. Both these systems present a rare stage of binary evolution, as the components are in a short and active evolotionary stage.