42 Persei

42 Persei is a star in the constellation Perseus. Its apparent magnitude is 5.11. Located around 82.30 parsecs (268.4 ly) distant, it is a blue-white main-sequence star of spectral type A3V, a star that is fusing its core hydrogen.

It is an rotating ellipsoidal variable, ranging from magnitude 5.18 to 5.05. It is a spectroscopic binary with a period of 1.76535 days and an eccentricity of 0.056, implying a round orbit. The companion star is likely to be a dim red dwarf.