{{Short description|Star in the constellation Centaurus}} {{hatnote|This article is about v Centauri. Not to be confused with [[ν Centauri|ν (nu) Centauri]]. For the variable star, see [[V Centauri]].}} {{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 125288 |x=360|y=765 }} | caption = Location of v Centauri (circled in red) }} {{Starbox observe | epoch = J2000.0 | constell = [[Centaurus]]<ref name=Anderson2012/> | ra = {{RA|14|20|19.54267}}<ref name=DR3/> | dec = {{DEC|−56|23|11.3838}}<ref name=DR3/> | appmag_v = 4.30<ref name=Anderson2012/> }} {{Starbox character | type = Supergiant<ref name=fraser2010/> | class = B5Ib/II<ref name=houk1979/> or B6Ib<ref name=Apellániz2018/> | b-v = {{Val|0.082|0.003}}<ref name=Anderson2012/> | u-b = | variable = }} {{Starbox astrometry | radial_v = {{Val|4.2|2.7}}<ref name=Anderson2012/> | prop_mo_ra = −9.437 | prop_mo_dec = −7.543 | pm_footnote = <ref name=DR3/> | parallax = 2.2511 | p_error = 0.1972 | parallax_footnote = <ref name=DR3/> | dist_pc = {{val|390|40}} | dist_ly = {{val|1270|130|fmt=commas}} | dist_footnote = <ref name=quantitative/> | absmag_v = −3.56<ref name=Anderson2012/> }} {{Starbox detail | source = <ref name=quantitative/> | mass = {{val|9.3|0.3}} | radius = {{val|21|2}} | metal_fe = | luminosity = {{val|12600|3200|2600|fmt=commas}} | gravity = {{val|2.77|0.05}} | temperature = {{val|13700|300|fmt=commas}} | rotational_velocity = {{val|23|4}} | age_myr = {{val|28.84|3.52|3.14}} }} {{Starbox catalog | names = {{odlist | B=v Cen | CP=−55°5984 | FK5=529 | HD=125288 | HIP=70069 | HR=5358 | SAO=241641 | GC=19318 }}<ref name=SIMBAD/> }} {{Starbox reference | Simbad = HD+125288 }} {{Starbox end}}
'''HD 125288''' is a single<ref name=Eggleton2008/> [[star]] in the southern [[constellation]] of [[Centaurus (constellation)|Centaurus]]. It has the [[Bayer designation]] '''v Centauri''' (lower case V); while ''HD 125288'' is the star's identifier in the ''[[Henry Draper catalogue]]''. The object has a blue-white hue and is faintly visible to the naked eye with an [[apparent visual magnitude]] of 4.30.<ref name=Anderson2012/> Based on [[astronomical spectroscopy|spectroscopic]] measurements, it is located at a distance of approximately 1,270 [[light year]]s from Earth.<ref name=quantitative/> This is a candidate [[runaway star]] that is moving to the west and falling back into the [[Galactic plane]].<ref name=Apellániz2018/> It has an [[absolute magnitude]] of −3.56.<ref name=Anderson2012/>
This massive [[B-type star|B-type]] [[supergiant star]]<ref name=fraser2010/> has a [[stellar classification]] of B5Ib/II<ref name=houk1979/> or B6Ib.<ref name=Apellániz2018/> It is around 29 million years old and has 9 times the [[mass of the Sun]]. The star has expanded to 21 times the [[solar radius|girth of the Sun]] and is spinning with a [[projected rotational velocity]] of 23 km/s. It is radiating 12,600 times the [[luminosity of the Sun]] from its [[photosphere]] at an [[effective temperature]] of 13,700 K.<ref name=quantitative/>
In 2016, an asterism including HD 125288 (SAO 241641) was unofficially identified in honor of [[David Bowie]].<ref name=HuffingtonPost2016/><ref name=GuysBlog2016/>
== References == {{Reflist|refs=
<ref name=quantitative>{{Citation |last=Weßmayer |first=D. |last2=Przybilla |first2=N. |last3=Butler |first3=K. |date=2022-12-01 |title=Quantitative spectroscopy of B-type supergiants |arxiv=2208.02692 |bibcode= 2022A&A...668A..92W |journal=[[Astronomy & Astrophysics]] |language=en |volume=668 |pages=A92 |doi=10.1051/0004-6361/202243973 |issn=0004-6361}}</ref>
<ref name=SIMBAD>{{cite simbad | title=HD 125288 | access-date=2020-02-03 }}</ref>
<ref name=DR3>{{Cite DR3|5892368991819163136}}</ref>
<ref name=fraser2010>{{cite journal | display-authors=1 | last1=Fraser | first1=M. | last2=Dufton | first2=P. L. | last3=Hunter | first3=I. | last4=Ryans | first4=R. S. I. | title=Atmospheric parameters and rotational velocities for a sample of Galactic B-type supergiants | journal=Monthly Notices of the Royal Astronomical Society | volume=404 | issue=3 | pages=1306 | year=2010 | bibcode=2010MNRAS.404.1306F | arxiv=1001.3337 | doi=10.1111/j.1365-2966.2010.16392.x | doi-access=free | s2cid=118674151 }}</ref>
<ref name=Anderson2012>{{cite XHIP|70069}}</ref>
<ref name=houk1979>{{cite book | last1=Houk | first1=Nancy | last2=Cowley | first2=A. P. | title=Michigan catalogue of two-dimensional spectral types for the HD stars | location=Ann Arbor, Michigan | publisher=Dept. of Astronomy, University of Michigan | year=1979 | volume=1 | bibcode=1978mcts.book.....H }}</ref>
<ref name=Eggleton2008>{{cite journal | 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 | bibcode=2008MNRAS.389..869E | arxiv=0806.2878 | doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | s2cid=14878976 }}</ref>
<ref name=Apellániz2018>{{cite journal | title=Search for Galactic runaway stars using Gaia Data Release 1 and HIPPARCOS proper motions | last1=Maíz Apellániz | first1=J. | last2=Pantaleoni González | first2=M. | last3=Barbá | first3=R. H. | last4=Simón-Díaz | first4=S. | last5=Negueruela | first5=I. | last6=Lennon | first6=D. J. | last7=Sota | first7=A. | last8=Trigueros Páez | first8=E. | display-authors=1 | journal=Astronomy & Astrophysics | volume=616 | id=A149 | pages=20 | date=August 2018 | arxiv=1804.06915 | bibcode=2018A&A...616A.149M | doi=10.1051/0004-6361/201832787 | s2cid=55004808 }}</ref>
<ref name=HuffingtonPost2016>{{Cite web | title=David Bowie Honored With Lightning Bolt-Shaped Constellation | url=http://www.huffingtonpost.com/entry/david-bowie-constellation_us_569c93abe4b0778f46f9d9dc | website=The Huffington Post | date=18 January 2016 | access-date=2016-01-18 }}</ref>
<ref name=GuysBlog2016>{{Cite web | title=Constellation Bowie? I don't think so | url=http://universalworkshop.com/guysblog/2016/01/18/constellation-bowie-i-dont-think-so/ | website=Guy's weblog | access-date=2016-01-18 | language=en-US | date=2016-01-18 }}</ref>
}}
{{Stars of Centaurus}}
{{DEFAULTSORT:Hd 125288}} [[Category:B-type supergiants]] [[Category:Centaurus]] [[Category:Bayer objects|Centauri, v]] [[Category:Durchmusterung objects|PD-55 05984]] [[Category:Henry Draper Catalogue objects|125288]] [[Category:Hipparcos objects|070069]] [[Category:Bright Star Catalogue objects|5358]] [[Category:Runaway stars]]