6 Persei

6 Persei is a binary star system in the northern constellation of Andromeda. It is faintly visible to the naked eye with an apparent visual magnitude of 5.29. The system is located 182 light years from Earth, as determined from its annual parallax shift of $41.82$. It is moving further away with a heliocentric radial velocity of +42 km/s. The system has a relatively high rate of proper motion, traversing the celestial sphere at the rate of $1.25$.

This is a single-lined spectroscopic binary with an orbital period of 1576.23 days and an eccentricity of 0.88. The a sin i value for the primary is $1,576.23 days$, where a is the semimajor axis and i is the orbital inclination. The inclination is estimated to be 104°.

The visible component is an evolved giant star with a stellar classification of G8.5 IIIb Fe-2, where the suffix notation indicates an underabundance of iron in the spectrum. It has 1.5 times the mass of the Sun and has expanded to 7 times the Sun's radius. The star is radiating 26 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,920 K. It has a magnitude 10.49 visual companion at an angular separation of $0.883$ along a position angle of 57°, as of 2004.