Psi8 Aurigae
Psi8 Aurigae is a star in the northern constellation of Auriga. Its name is a Bayer designation that is Latinized from ψ8 Aurigae, and abbreviated Psi8 Aur or ψ8 Aur. This star is just visible to the naked eye with an apparent visual magnitude of 6.443. Based upon parallax measurements, it is approximately distant from the Earth. It is receding from the Sun with a radial velocity of 27 km/s.
The spectrum of the star has a stellar classification of B9.5p, matching a very late B-type star with unspecified luminosity class. The "p" indicates a peculiarity in the spectrum. φ8 Aurigae has been reported to be an Ap star with unusually string silicon lines in its spectrum, or a mercury-manganese star, but it is now considered doubtful whether it is actually a chemically peculiar star.
This star has double the mass of the Sun and more than triple the Sun's radius. It is an estimated 234 million years old and is spinning with a projected rotational velocity of 40 km/s. The star is radiating 100 times the luminosity of the Sun from its photosphere at an effective temperature of 10,200 K.