30 Persei is a binary star[3] system in the northern constellation Perseus. It is faintly visible to the naked eye with an apparent visual magnitude of 5.49.[2] Based upon an annual parallax shift of 4.46±0.39 mas,[1] is located roughly 730 light years from the Sun. It is a member of the Perseus OB3 association, which includes the Alpha Persei Cluster.[8]
This is a single-lined spectroscopic binary star system with an orbital period of 36.5 days and an eccentricity of roughly 0.3. The visible component is a B-type main-sequence star with a stellar classification of B7 V.[3] It is spinning rapidly with a projected rotational velocity of 212 km/s.[5] The star has 4.2[5] times the mass of the Sun and is radiating around 611[5] times the Sun's luminosity from its photosphere at an effective temperature of 9,908 K.[6]
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