HD 114837

{{Short description|Binary star system in the constellation Centaurus}} {{Starbox begin}} {{Starbox image | image = {{Location mark |image=Centaurus constellation map.svg|alt=|float=center|width=280 |label=|position=right |mark=Red circle.svg|mark_width=10|mark_link=HD 114837 |x=560|y=818 }} | caption = Location of HD 114837 (circled in red) }} {{Starbox observe | epoch = J2000 | constell = [[Centaurus]]<ref name=Anderson2012/> | ra = {{RA|13|14|15.14474}}<ref name=GaiaDR3/> | dec = {{DEC|−59|06|11.6540}}<ref name=GaiaDR3/> | appmag_v = 4.90<ref name=Anderson2012/> + 10.2<ref name=Chini2014/> }} {{Starbox character | type = [[main sequence]]<ref name=GaiaDR3/> | class = {{nowrap|F6 V Fe-0.4}}<ref name=Gray2006/> | b-v = {{Val|0.489|0.020}}<ref name=Anderson2012/> | u-b = }} {{Starbox astrometry | radial_v = {{Val|−64.0|0.3}}<ref name=deBruijne2012/> | prop_mo_ra = −248.678<ref name=GaiaDR3/> | prop_mo_dec = −153.176<ref name=GaiaDR3/> | parallax = 54.8247 | p_error = 0.0809 | parallax_footnote = <ref name=GaiaDR3/> | absmag_v = 3.73<ref name=AmmlerVonEiff2012/> }} {{Starbox detail | source = | component1 = HD 114837 A | mass = 1.14<ref name=fuhrmann2017/> | radius = 1.3<ref name=Cadars2001/> | luminosity = 3.12<ref name=Anderson2012/> | gravity = 4.21<ref name=Casagrande2011/> | temperature = {{Val|6346|80|fmt=commas}}<ref name=Casagrande2011/> | metal_fe = −0.27<ref name=Casagrande2011/> | rotational_velocity = {{Val|8.8|3.0}}<ref name=AmmlerVonEiff2012/> | age_gyr = 3.40<ref name=Casagrande2011/> }} {{Starbox catalog | names = {{odlist | CD=-58°4940 | FK5= | GJ=503 | HD=114837 | HIP=64583 | HR=4989 | SAO=240666 | WDS=J13143-5906A }}<ref name=SIMBAD/> }} {{Starbox reference | Simbad = HD+114837 }} {{Starbox end}}

'''HD 114837''' is a suspected [[binary star]]<ref name=fuhrmann2017/><ref name=Chini2014/> system in the southern [[constellation]] of [[Centaurus (constellation)|Centaurus]]. The brighter star is faintly visible to the naked eye with an [[apparent visual magnitude]] of 4.90.<ref name=Anderson2012/> It has a magnitude 10.2 candidate [[common proper motion]] companion at an [[angular separation]] of {{Val|4.2|ul=arcsecond}}, as of 2014.<ref name=Chini2014/> The distance to this system, based on an annual [[stellar parallax|parallax shift]] of {{Val|54.825|ul=arcsecond}} as seen from Earth's orbit,<ref name=GaiaDR3/> is 59.5 [[light year]]s. It is moving closer with a heliocentric [[radial velocity]] of −64 km/s,<ref name=deBruijne2012/> and will approach to within {{Convert|6.679|pc|ly|order=flip|abbr=on|sigfig=3|disp=out}} in around 240,600 years.<ref name=BailerJones2015/>

The primary component is an [[F-type main-sequence star]] with a [[stellar classification]] of {{nowrap|F6 V Fe-0.4}},<ref name=Gray2006/> showing a mild underabundance of iron in its [[stellar spectrum|spectrum]]. It is about 3.4<ref name=Casagrande2011/> billion years old with 1.14<ref name=fuhrmann2017/> times the [[mass of the Sun]] and about 1.3<ref name=Cadars2001/> times the Sun's radius. This star is radiating 3.12<ref name=Anderson2012/> times the [[Sun's luminosity]] from its [[photosphere]] at an [[effective temperature]] of 6,346 K.<ref name=Casagrande2011/>

==References== <references> <ref name=SIMBAD>{{cite simbad | title=HD 114837 | access-date=2018-07-05 }}</ref>

<ref name=Gray2006>{{citation | display-authors=1 | last1=Gray | first1=R. O. | last2=Corbally | first2=C. J. | last3=Garrison | first3=R. F. | last4=McFadden | first4=M. T. | last5=Bubar | first5=E. J. | last6=McGahee | first6=C. E. | last7=O'Donoghue | first7=A. A. | last8=Knox | first8=E. R. | title=Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample | journal=[[The Astronomical Journal]] | volume=132 | issue=1 | pages=161–170 | date=July 2006 | doi=10.1086/504637 | bibcode=2006AJ....132..161G | arxiv=astro-ph/0603770 | s2cid=119476992 | postscript=. }}</ref>

<ref name=deBruijne2012>{{citation | 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=. }}</ref>

<ref name=BailerJones2015>{{citation | last1=Bailer-Jones | first1=C. A. L. | title=Close encounters of the stellar kind | journal=Astronomy & Astrophysics | volume=575 | id=A35 | pages=13 | date=March 2015 | doi=10.1051/0004-6361/201425221 | bibcode=2015A&A...575A..35B | postscript=. | arxiv=1412.3648 | s2cid=59039482 }}</ref>

<ref name=fuhrmann2017>{{citation | last1=Fuhrmann |first1=K. | last2=Chini | first2=R. | last3=Kaderhandt | first3=L. | last4=Chen | first4=Z. | title=Multiplicity among Solar-type Stars | journal=The Astrophysical Journal | postscript=. | volume=836 | pages=139 | year=2017 |issue=1 | bibcode=2017ApJ...836..139F | doi=10.3847/1538-4357/836/1/139 | doi-access=free }}</ref>

<ref name=Chini2014>{{citation | display-authors=1 | last1=Chini | first1=R. | last2=Fuhrmann | first2=K. | last3=Barr | first3=A. | last4=Pozo | first4=F. | last5=Westhues | first5=C. | last6=Hodapp | first6=K. | title=New visual companions of solar-type stars within 25 pc | journal=Monthly Notices of the Royal Astronomical Society | volume=437 | issue=1 | pages=879–886 | date=January 2014 | doi=10.1093/mnras/stt1953 | doi-access=free | bibcode=2014MNRAS.437..879C | arxiv=1310.2684 | postscript=. }}</ref>

<ref name=AmmlerVonEiff2012>{{citation | last1=Ammler-von Eiff | first1=Matthias | last2=Reiners | first2=Ansgar | title=New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars? | journal=Astronomy & Astrophysics | arxiv=1204.2459 | volume=542 | page=A116 | date=June 2012 | postscript=. | doi=10.1051/0004-6361/201118724 | bibcode=2012A&A...542A.116A | s2cid=53666672 }}</ref>

<ref name=Casagrande2011>{{citation | display-authors=1 | last1=Casagrande | first1=L. | last2=Schönrich | first2=R. | last3=Asplund | first3=M. | last4=Cassisi | first4=S. | last5=Ramírez | first5=I. | last6=Meléndez | first6=J. | last7=Bensby | first7=T. | last8=Feltzing | first8=S. | title=New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey | journal=Astronomy and Astrophysics | volume=530 | page=A138 | date=June 2011 | doi=10.1051/0004-6361/201016276 | bibcode=2011A&A...530A.138C | arxiv=1103.4651 | s2cid=56118016 | postscript=. }}</ref>

<ref name=Cadars2001>{{citation | last1=Pasinetti Fracassini | first1=L. E. | last2=Pastori | first2=L. | last3=Covino | first3=S. | last4=Pozzi | first4=A. | title=Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition | journal=Astronomy and Astrophysics | volume=367 | issue=2 | pages=521–524 | date=February 2001 | bibcode=2001A&A...367..521P | doi=10.1051/0004-6361:20000451 | arxiv=astro-ph/0012289 | s2cid=425754 | postscript=. }}</ref> </references>

{{DEFAULTSORT:HD 114837}} [[Category:F-type main-sequence stars]] [[Category:Gould objects|Centauri, 191]] [[Category:Centaurus]] [[Category:Durchmusterung objects|CD-58 04940]] [[Category:Gliese and GJ objects|0503]] [[Category:Henry Draper Catalogue objects|114837]] [[Category:Hipparcos objects|064583]] [[Category:Bright Star Catalogue objects|4989]]