64 Aurigae
{{Short description|Star in the constellation Auriga}}
{{Starbox begin}}
{{Starbox observe
| epoch = J2000
| constell = Auriga
| dec = {{DEC|+40|53|00.2248}}
}}
{{Starbox character
| b-v = {{Val|0.181|0.005}}
| u-b =
| variable =
}}
{{Starbox astrometry
| radial_v = {{Val|−10.0|4.3}}
| parallax = 10.4466
| p_error = 0.1116
}}
{{Starbox detail
| source =
| radius =
| temperature = {{Val|8014|272|fmt=commas}}
| metal_fe =
}}
{{Starbox catalog
| names = {{odlist | F=64 Aur | BD=+41°1630 | FK5=276 | HD=56221 | HIP=35341 | HR=2753 | SAO=41679 }}
}}
{{Starbox reference
| Simbad = 63+Aur
}}
{{Starbox end}}
64 Aurigae is a single star located 312 light years away from the Sun in the northern constellation of Auriga. It is visible to the naked eye as a dim, white-hued star with an apparent magnitude of 5.87. The star is moving closer to the Earth with a heliocentric radial velocity of −10, and may come to within {{Convert|51.11|pc|ly|0|abbr=off|disp=out|lk=on}} in around 5.3 million years. It is a member of the Sirius supercluster.
This object is an ordinary A-type main-sequence star with a stellar classification of 5 Vn, where the 'n' notation is used to indicate "nebulous" lines in the spectrum caused by rapid rotation. It is 291 million years old with a projected rotational velocity of 212 km/s. The star has 1.67 times the mass of the Sun and is radiating 27 times the Sun's luminosity from its photosphere at an effective temperature of 8,014 K.
It was also known to be part of a much bigger constellation named Telescopium Herschelii before it was unrecognized by the International Astronomical Union (IAU).
References
{{Reflist|refs=
{{cite DR2|948509515477490560}}
{{cite simbad | title=63 Aur | access-date=2019-05-24 }}
| title=XHIP: An extended hipparcos compilation
| last1=Anderson | first1=E. | last2=Francis | first2=Ch.
| journal=Astronomy Letters | postscript=.
| volume=38 | issue=5 | pages=331 | year=2012
| bibcode=2012AstL...38..331A | arxiv=1108.4971
| doi=10.1134/S1063773712050015 | s2cid=119257644 }}
{{citation | display-authors=1
| last1=Cowley | first1=A. | last2=Cowley | first2=C.
| last3=Jaschek | first3=M. | last4=Jaschek | first4=C.
| title=A study of the bright A stars. I. A catalogue of spectral classifications
| journal=Astronomical Journal | postscript=.
| volume=74 | pages=375–406 | date=April 1969
| doi=10.1086/110819 | bibcode=1969AJ.....74..375C }}
| last1=David | first1=Trevor J. | last2=Hillenbrand | first2=Lynne A.
| title=The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets
| journal=The Astrophysical Journal
| volume=804 | issue=2 | pages=146 | year=2015
| bibcode=2015ApJ...804..146D | doi=10.1088/0004-637X/804/2/146
| arxiv=1501.03154 | s2cid=33401607 | postscript=. }}
| last1=Zorec | first1=J. | last2=Royer | first2=F.
| last3=Asplund | first3=Martin | last4=Cassisi
| first4=Santi | last5=Ramirez | first5=Ivan
| last6=Melendez | first6=Jorge | last7=Bensby
| first7=Thomas | last8=Feltzing | first8=Sofia
| title=Rotational velocities of A-type stars. IV. Evolution of rotational velocities
| journal=Astronomy and Astrophysics
| volume=537 | pages=A120 | year=2012
| bibcode=2012A&A...537A.120Z | arxiv=1201.2052
| doi=10.1051/0004-6361/201117691 | s2cid=55586789 | postscript=. }}
| 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 | postscript=.
| bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | s2cid=14878976 }}
| title=The Sirius supercluster
| last1=Palous | first1=J. | last2=Hauck | first2=B.
| journal=Astronomy and Astrophysics
| volume=162 | pages=54–61 | date=July 1986
| bibcode=1986A&A...162...54P | postscript=. }}
}}
{{Stars of Auriga}}
{{DEFAULTSORT:64 Aurigae}}
Category:A-type main-sequence stars