50 Persei
{{Short description|Star in the constellation Perseus}}
{{Starbox begin}}
{{Starbox image
| image = 250px
| caption = A light curve for V582 Persei, plotted from Hipparcos data
}}
{{Starbox observe
| epoch = J2000.0
| constell = Perseus
| dec = {{DEC|+38|02|23.0488}}
}}
{{Starbox character
| variable = RS CVn and BY Dra
}}
{{Starbox astrometry
| parallax = 47.63
| p_error = 0.26
}}
{{Starbox detail
| radius =
| luminosity =
}}
{{Starbox catalog
| names = 50 Per, BD+37°882, FK5 2297, GJ 9145, HD 25998, HIP 19335, V582 Persei, HR 1278, SAO 57006.
}}
{{Starbox reference
|Simbad=50+Per
}}
{{Starbox end}}
50 Persei is a star in the constellation Perseus. Its apparent magnitude is 5.52, which is bright enough to be seen with the naked eye. Located around {{convert|21.00|pc|ly}} distant, it is a White main-sequence star of spectral type F7V, a star that is currently fusing its core hydrogen. In 1998 the star was named a candidate Gamma Doradus variable with a period of 3.05 days, which would means it displays variations in luminosity due to non-radial pulsations in the photosphere. Subsequently, it was classified as a RS Canum Venaticorum and BY Draconis variable by an automated program.
This is probably a binary system with an unseen companion. It is physically associated with the likely binary system HIP 19255, with the two pairs orbiting each other over a time scale of around a million years. The components of HIP 19255 have an angular separation of 3.87″ and the two components orbit each other every 590 years. 50 Persei may share a gravitational association with Capella, even though the two are separated by nearly 15° − equivalent to a distance of {{Convert|5.9|pc|ly|abbr=on|lk=off|order=flip}}.
50 Persei is emitting an infrared excess at a wavelength of 70 μm, suggesting the presence of a circumstellar debris disk. The disk has a temperature of {{Val|96|5|u=K}}.
References
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| title=* 50 Per
| access-date=2016-07-22 }}
}}
{{Stars of Perseus}}
{{DEFAULTSORT:50 Persei}}
Category:Perseus (constellation)
Category:F-type main-sequence stars
Category:RS Canum Venaticorum variables