Omega Aurigae
Omega Aurigae is a double star in the northern constellation of Auriga. Its name is a Bayer designation that is Latinized from ω Aurigae, and abbreviated Omega Aur or ω Aur. This star has a combined apparent visual magnitude of 4.95, which is bright enough to be seen with the naked eye. The distance to this system, as determined using parallax measurements, is approximately. It is receding from the Sun with a radial velocity of +8 km/s. The system is a member of the Columba group of co-moving stars.
The primary component is an A-type main sequence star with a stellar classification of A1 V. It is 317 million years old with a high rate of spin, showing a projected rotational velocity of 107 km/s. The star has 2.3 times the mass of the Sun and double the Sun's radius. It is radiating 27 times the Sun's luminosity from its photosphere at an effective temperature of 9,230 K. The object displays an infrared excess, suggesting an orbiting debris disk with a temperature of 20 K at a mean radius of from the host star.
There is a magnitude 8.18 companion at an angular separation of along a position angle of 4.30°. This corresponds to a physical separation of. The system is an X-ray source with a luminosity of.