43 Persei

43 Persei is a binary star system in the northern constellation Perseus. It is visible to the naked eye as a dim, yellow-white hued star with an apparent visual magnitude of 5.28. The system is located around 38.46 pc distant from the Sun, based on parallax.

This is a double-lined spectroscopic binary with an orbital period of 30.4 days and an eccentricity of 0.6. The primary component is an F-type main-sequence star with a stellar classification of F5V, a star that is fusing its core hydrogen. It has 1.54 times the mass of the Sun, 2.4 times the Sun's radius, and is spinning with a projected rotational velocity of 17 km/s. The star shines 10.8 times brighter than the Sun at an effective temperature of 6609 K.

There are distant companions B (separation 75.5" and magnitude 10.66), C (separation 85.6" and magnitude 12.18), and D (separation 68" and magnitude 13.43).