Pi_Persei
Pi Persei
Star in the constellation Perseus
π Persei, Latinized as Pi Persei, is a single[11] star in the northern constellation of Perseus. It has the traditional name Gorgonea Secunda /ɡɔːrɡəˈniːə sɪˈkʌndə/, the second of three Gorgons in the mythology of the hero Perseus.[12] This star has a white hue and is faintly visible to the naked eye with an apparent visual magnitude of +4.7.[2] It is located at a distance of approximately 303 light years from the Sun based on parallax,[1] and is moving further away with a radial velocity of +14 km/s.[4]
This object is an A-type main-sequence star with a stellar classification of A2Vn,[3] where the 'n' suffix indicates broad (nebulous) lines due to rapid rotation. It is spinning with a projected rotational velocity of 186 km/s,[8] which is creating an equatorial bulge that is 6% wider than the polar radius.[13] The star is 272[6] million years old with double the mass of the Sun.[6] It has 4.8[7] times the Sun's radius and is radiating 170[8] times the luminosity of the Sun from its photosphere at an effective temperature of 9,290 K.[8]