3 Persei
{{Short description|Star in the constellation Perseus}}
{{Starbox begin
| name = 3 Persei
}}
{{Starbox observe
| epoch = J2000
| constell = Perseus
| dec = {{DEC|+49|12|15.6705}}
}}
{{Starbox character
| b-v =
| u-b =
| variable =
}}
{{Starbox astrometry
| radial_v = {{Val|−0.67|0.17}}
| parallax = 12.6940
| p_error = 0.0671
}}
{{Starbox detail
| mass = {{Val|1.41|0.17}}
| radius = {{Val|8.27|0.55}}
| luminosity = {{Val|37.2|7.5|6.3}}
| gravity = {{Val|2.72|0.09}}
| temperature = {{Val|4757|25|fmt=commas}}
| metal_fe = {{Val|−0.15|0.05}}
| rotational_velocity = {{Val|1.85|0.45}}
| rotation =
| age_gyr = {{Val|2.91|0.98}}
}}
{{Starbox catalog
| names = {{odlist | F=3 Per | BD=+48°576 | FK5= | HD=11949 | HIP=9222 | HR=568 | SAO=37665 }}
}}
{{Starbox reference
| Simbad = 3+Per
}}
{{Starbox end}}
3 Persei is a single, orange-hued star in the northern constellation of Perseus. It is dimly visible to the naked eye under good viewing conditions, having an apparent visual magnitude of 5.70 The star is located around {{convert|78.8|pc|ly|adj=ri0}} distant, based upon an annual parallax shift of {{Val|12.7|ul=mas}}.
This star has a stellar classification of K0 IV, suggesting it is a K-type subgiant – an evolved star that has used up its core hydrogen and is evolving to become a red giant. However, da Silva et al. (2015) categorized it as a giant star proper. At the age of around three billion years, it has an estimated 1.4 times the mass of the Sun and has expanded to move than 8 times the Sun's radius. It is radiating roughly 37 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 4,757 K.
References
{{reflist|refs=
{{cite simbad | title=3 Per | access-date=2018-03-08 }}
{{cite Gaia DR3|357623445496975872}}
| title=XHIP: An extended hipparcos compilation
| last1=Anderson | first1=E. | last2=Francis | first2=Ch.
| journal=Astronomy Letters
| volume=38 | issue=5 | pages=331 | year=2012
| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015
| arxiv=1108.4971 | s2cid=119257644 | postscript=. }}
| display-authors=1 | last1=Da Silva | first1=Ronaldo
| last2=Milone | first2=André de C. | last3=Rocha-Pinto | first3=Helio J.
| title=Homogeneous abundance analysis of FGK dwarf, subgiant, and giant stars with and without giant planets
| journal=Astronomy & Astrophysics | postscript=.
| volume=580 | pages=A24 | year=2015
| bibcode=2015A&A...580A..24D | doi=10.1051/0004-6361/201525770 | arxiv=1505.01726 | s2cid=119216425 }}
| last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A.
| title=A catalogue of multiplicity among bright stellar systems
| journal=Monthly Notices of the Royal Astronomical Society
| volume=389 | issue=2 | pages=869–879 | date=September 2008
| doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | bibcode=2008MNRAS.389..869E
| arxiv=0806.2878 | s2cid=14878976 | postscript=. }}
| last1=de Bruijne | first1=J. H. J. | last2=Eilers | first2=A.-C.
| title=Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project
| journal=Astronomy & Astrophysics
| volume=546 | id=A61 | pages=14 | date=October 2012
| doi=10.1051/0004-6361/201219219 | bibcode=2012A&A...546A..61D
| arxiv=1208.3048 | s2cid=59451347 | postscript=. }}
| last1=Cowley | first1=A. P. | last2=Bidelman | first2=W. P.
| title=MK spectral types for some F and G stars
| journal=Publications of the Astronomical Society of the Pacific
| volume=91 | pages=83–86 | date=February 1979
| doi=10.1086/130446 | bibcode=1979PASP...91...83C | doi-access=free }}
| title=Stellar parameters and chemical abundances of 223 evolved stars with and without planets
| last1=Jofré | first1=E. | last2=Petrucci | first2=R.
| last3=Saffe | first3=C. | last4=Saker | first4=L.
| last5=de la Villarmois | first5=E. Artur | last6=Chavero | first6=C.
| last7=Gómez | first7=M. | last8=Mauas | first8=P. J. D.
| journal=Astronomy & Astrophysics | display-authors=1
| volume=574 | id=A50 | pages=46 | date=February 2015
| doi=10.1051/0004-6361/201424474 | bibcode=2015A&A...574A..50J
| arxiv=1410.6422 | s2cid=53666931 | postscript=. }}
}}
{{Stars of Perseus}}
{{DEFAULTSORT:3 Persei}}
Category:Perseus (constellation)