{{Short description|Star in the constellation Centaurus}} {{Starbox begin | name = HD 114729 }} {{Starbox observe | epoch=J2000 | constell=[[Centaurus]]<ref name=Anderson2012/> | ra={{RA|13|12|44.259}}<ref name=GaiaDR3/> | dec={{DEC|-31|52|24.06}}<ref name=GaiaDR3/> | appmag_v=6.68<ref name=Anderson2012/> }} {{Starbox character | type = [[main sequence]]<ref name="Butler2003"/> | class = G0 V<ref name="Gray2006"/> | b-v = {{Val|0.591|0.008}}<ref name=Anderson2012/> | u-b = }} {{Starbox astrometry | radial_v = 26.3378{{±|0.0187}}<ref name=Soubiran_et_al_2018/> | prop_mo_ra = −199.927 | prop_mo_dec = −308.130 | pm_footnote = <ref name=GaiaDR3/> | parallax = 26.3378 | p_error = 0.0187 | parallax_footnote = <ref name=GaiaDR3/> | absmag_v = 3.89<ref name=Anderson2012/> }} {{Starbox detail | source = <ref name="Bonfanti2016"/> | component1 = HD 114729 A | mass = {{Val|0.97|0.01}} | radius = {{Val|1.44|0.03}} | luminosity = {{Val|2.33|0.02}} | gravity = {{Val|4.10|0.02}} | temperature = {{Val|5939|58|fmt=commas}} | metal_fe = −0.220<ref name=open/> | age_gyr = {{Val|9.30|0.60}} | component2 = HD 114729 B | mass2 = {{Val|0.253|0.011}}<ref name=Mugrauer2005/> }} {{Starbox catalog | names = {{odlist | CD=−31°10156 | HD=114729 | HIP=64459 | SAO=204237 | WDS=J13127-3152A }}<ref name=SIMBAD/> }} {{Starbox reference | Simbad = HD+114729 | EPE = | ARICNS = }} {{Starbox end}}
'''HD 114729''' is a Sun-like [[star]] with an orbiting [[exoplanet]] in the southern [[constellation]] of [[Centaurus]]. Based on [[stellar parallax|parallax]] measurements, it is located at a distance of 124 [[light years]] from the Sun. It is near the lower limit of visibility to the naked eye, having an [[apparent visual magnitude]] of 6.68<ref name=Anderson2012/> The system is drifting further away with a heliocentric [[radial velocity]] of 26.3 km/s.<ref name=Soubiran_et_al_2018/> The system has a relatively high [[proper motion]], traversing the [[celestial sphere]] at an [[angular rate]] of {{val|0.373|ul=arcsecond}}·yr<sup>−1</sup>.<ref name=Luyten1995/>
The [[stellar spectrum|spectrum]] of HD 114729 presents as an ordinary [[G-type main-sequence star]], a yellow dwarf, with a [[stellar classification]] of G0 V.<ref name="Gray2006"/> It has a negligible level of [[magnetic activity]], making it [[chromosphere|chromosperically]] quiet.<ref name="Butler2003"/> The star has about the same mass as the Sun, but the radius has expanded to 44% greater than the Sun's girth. It is radiating more than double the luminosity of the Sun from its [[photosphere]] at an [[effective temperature]] of 5,939 K. The size and luminosity suggest a much greater age than the Sun; perhaps around nine billion years.<ref name="Bonfanti2016"/>
HD 114729 has a co-moving companion designated HD 114729 B, with the latter having 25.3% of the [[solar mass|Sun's mass]] and a [[projected separation]] of {{Val|282|10|ul=AU}}.<ref name=Mugrauer2005/>
==Planetary system== In 2003 the [[California and Carnegie Planet Search]] team announced the discovery of a [[planet]] orbiting the star.<ref name="Butler2003"/> This planet orbits twice as far away from the star as Earth to the Sun and orbits very eccentrically. It has [[mass]] at least 95% (0.840) that of [[Jupiter]] and thus a minimum of 267 times the mass of [[Earth]].
{{OrbitboxPlanet begin | table_ref = <ref name="Butler2006"/> }} {{OrbitboxPlanet | exoplanet = [[HD 114729 b|b]] | mass = {{val|p=>|0.95|0.10}} | period = {{val|1114|15}} | semimajor = {{val|2.11|0.12}} | eccentricity = {{val|0.167|0.055}} }} {{Orbitbox end}}
== See also == * [[List of extrasolar planets]]
==References== <references> <ref name=SIMBAD>{{cite simbad | title=HD 114729 | access-date=2018-06-25 }}</ref>
<ref name=GaiaDR3>{{Cite Gaia DR3|6180035765135232128}}</ref>
<ref name=Mugrauer2005>{{cite journal | title=Four new wide binaries among exoplanet host stars | last1=Mugrauer | first1=M. | last2=Neuhäuser | first2=R. | last3=Seifahrt | first3=A. | last4=Mazeh | first4=T. | last5=Guenther | first5=E. | display-authors=1 | journal=Astronomy and Astrophysics | volume=440 | issue=3 | pages=1051−1060 | date=September 2005 | doi=10.1051/0004-6361:20042297 | bibcode=2005A&A...440.1051M | arxiv=astro-ph/0507101 | s2cid=14065040 }}</ref>
<ref name=Anderson2012>{{cite XHIP|64459}}</ref>
<ref name="Gray2006">{{cite journal | title=Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample | 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. | display-authors=1 | 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}}</ref>
<ref name="Bonfanti2016">{{cite journal | title=Age consistency between exoplanet hosts and field stars | display-authors=1 | last1=Bonfanti | first1=A. | last2=Ortolani | first2=S. | last3=Nascimbeni | first3=V. | journal=Astronomy & Astrophysics | year=2016 | volume=585 | pages=A5 | arxiv=1511.01744 | bibcode=2016A&A...585A...5B | doi=10.1051/0004-6361/201527297 | s2cid=53971692 }}</ref>
<ref name="Butler2003">{{cite journal | title=Seven New Keck Planets Orbiting G and K Dwarfs | last1=Butler | first1=R. Paul | last2=Marcy | first2=Geoffrey W. | last3=Vogt | first3=Steven S. | last4=Fischer | first4=Debra A. | last5=Henry | first5=Gregory W. | last6=Laughlin | first6=Gregory | last7=Wright | first7=Jason T. | display-authors=1 | journal=The Astrophysical Journal | date=2003 | volume=582 | issue=1 | pages=455–466 | doi=10.1086/344570 | bibcode=2003ApJ...582..455B | citeseerx=10.1.1.7.6988 | s2cid=17608922 }}</ref>
<ref name="Butler2006">{{cite journal | title=Catalog of Nearby Exoplanets | last1=Butler | first1=R. P. | last2=Wright | first2=J. T. | last3=Marcy | first3=G. W. | last4=Fischer | first4=D. A. | last5=Vogt | first5=S. S. | last6=Tinney | first6=C. G. | last7=Jones | first7=H. R. A. | last8=Carter | first8=B. D. | last9=Johnson | first9=J. A. | display-authors=1 | journal=The Astrophysical Journal | volume=646 | issue=1 | pages=505–522 | date=2006 | doi=10.1086/504701 | bibcode=2006ApJ...646..505B | arxiv=astro-ph/0607493 | hdl=2299/1103 | s2cid=119067572 }}</ref>
<ref name=open>{{cite journal | title=HD 114729 | display-authors=1 | last1=Barry | first1=Don C. | last2=Cromwell | first2=Richard H. | last3=Hege | first3=E. Keith | journal=Open Oxoplanet Catalogue | volume=315 | date=2016 | page=264 | doi=10.1086/165131 | bibcode=1987ApJ...315..264B }}</ref>
<ref name=Soubiran_et_al_2018>{{cite journal | title=Gaia Data Release 2. The catalogue of radial velocity standard stars | last1=Soubiran | first1=C. | last2=Jasniewicz | first2=G. | last3=Chemin | first3=L. | last4=Zurbach | first4=C. | last5=Brouillet | first5=N. | last6=Panuzzo | first6=P. | last7=Sartoretti | first7=P. | last8=Katz | first8=D. | last9=Le Campion | first9=J. -F. | last10=Marchal | first10=O. | last11=Hestroffer | first11=D. | last12=Thévenin | first12=F. | last13=Crifo | first13=F. | last14=Udry | first14=S. | last15=Cropper | first15=M. | last16=Seabroke | first16=G. | last17=Viala | first17=Y. | last18=Benson | first18=K. | last19=Blomme | first19=R. | last20=Jean-Antoine | first20=A. | last21=Huckle | first21=H. | last22=Smith | first22=M. | last23=Baker | first23=S. G. | last24=Damerdji | first24=Y. | last25=Dolding | first25=C. | last26=Frémat | first26=Y. | last27=Gosset | first27=E. | last28=Guerrier | first28=A. | last29=Guy | first29=L. P. | last30=Haigron | first30=R. | display-authors=1 | journal=Astronomy and Astrophysics | volume=616 | pages=A7 | year=2018 | bibcode=2018A&A...616A...7S | arxiv=1804.09370 | doi=10.1051/0004-6361/201832795 | s2cid=52952408 }}</ref>
<ref name=Luyten1995>{{cite journal | title=NLTT Catalogue (Luyten, 1979) | last=Luyten | first=W. J. | journal=VizieR Online Data Catalog | date=June 1995 | bibcode=1995yCat.1098....0L }}</ref> </references>
==External links== * {{cite encyclopedia |url=http://exoplanet.eu/star.php?st=HD+114729 |archive-url=https://web.archive.org/web/20071106054210/http://exoplanet.eu/star.php?st=HD+114729 |url-status=dead |archive-date=November 6, 2007 |encyclopedia=[[Extrasolar Planets Encyclopaedia]] |title=HD 114729 }}
{{Sky|13|12|44.2575|-|31|52|24.056|114.1}} {{Stars of Centaurus}}
{{DEFAULTSORT:HD 114729}} <!-- Properties --> [[Category:G-type main-sequence stars]] [[Category:Planetary systems with one confirmed planet]] <!-- Location/catalogues --> [[Category:Centaurus]] [[Category:Durchmusterung objects]] [[Category:Henry Draper Catalogue objects|114729]] [[Category:Hipparcos objects|064459]]