3 Andromedae
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3 Andromedae, abbreviated 3 And, is a single[10] star in the northern constellation of Andromeda. 3 Andromedae is the Flamsteed designation. It is visible to the naked eye with an apparent visual magnitude of 4.64.[2] The distance to this star, as determined from an annual parallax shift of Script error: No such module "val".,[1] is 181 light years. It is moving closer to the Earth with a heliocentric radial velocity of −35 km/s,[11] and has a relatively large proper motion, traversing the celestial sphere at Script error: No such module "val".·yr−1.[12]
This is an evolved giant star with a stellar classification of K0 IIIb,[4] where the 'b' suffix indicated a lower luminosity giant. It is a red clump star,[3] which means it is generating energy through helium fusion at its core. This star has an estimated 1.7[5] times the mass of the Sun (Template:Solar mass), and, at the age of 2.3[5] billion years, has expanded to 10 times the Sun's radius (Template:Solar radius).[6] It is radiating 49[5] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,668 K.[5]
References
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