Omicron Aurigae is an astrometric binary star system in the northern constellation of Auriga. Its name is a Bayer designation that is Latinized from ÿ Aurigae, and abbreviated Omicron Aur or ÿ Aur. With an apparent visual magnitude of 5.47, it is faintly visible to the naked eye. Based upon an annual parallax shift of , it is approximately distant from Earth. It is drifting closer to the Sun with a radial velocity of âÂÂ8 km/s. The star is a member of the Ursa Major stream of co-moving stars.
The visible component is a chemically peculiar star with a stellar classification of ; meaning this is an A-type star with a spectrum that shows anomalously high abundances of chromium (Cr) and europium (Eu). A magnetic field has been detected and it is a source of X-ray emission with a luminosity of: log L<sub>x</sub> = 29.1. The star has 1.9 times the mass of the Sun and 3.2 times the Sun's radius. It is spinning with a projected rotational velocity of 35 km/s and is radiating 50 times the Sun's luminosity from its photosphere at an effective temperature of 8,300 K.