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Star in the constellation Perseus
55 Perseiis a single,[9]blue-white huedstarin the northernconstellationPerseus.It is faintly visible to the naked eye under good seeing conditions, having anapparent visual magnitudeof 5.73.[2]Based upon an annualparallax shiftof8.50±0.38mas[4]as seen from Earth's orbit, the star is located about 380light yearsfrom the Sun. At that distance, the visual magnitude is diminished by anextinctionof 0.39[5]due tointerstellar dust.
This is aB-type main-sequence starwith astellar classificationof B8 V;[2]a massive star that is generating energy throughhydrogen fusionat itscore.It has 3.44[6]times themass of the Sunand about 3[7]times theSun's radius.The star is about 197[5]million years old and is spinning rapidly with aprojected rotational velocityof 288 km/s.[6]It is radiating roughly 193[6]times theSun's luminosityfrom itsphotosphereat aneffective temperatureof 12,246 K.[6]
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- ^"55 Per".SIMBAD.Centre de données astronomiques de Strasbourg.Retrieved2018-03-08.
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