{{Short description|Star in the constellation Centaurus}} {{about-confuse|J Centauri|HD 102776{{!}}j 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=J Centauri |x=535|y=858 }} | caption = Location of J Centauri (circled in red) }} {{Starbox observe | epoch=[[J2000.0]] | constell=[[Centaurus]]<ref name=xhip/> | ra={{RA|13|22|37.9331}}<ref name=dr3/> | dec={{DEC|-60|59|18.170}}<ref name=dr3/> | appmag_v=+4.505<ref name="SIMBAD"/> }} {{Starbox character | type = [[main sequence]]<ref name=dr3/> | class=B3V<ref>{{cite journal | author1=Hiltner, W. A. |author2=Garrison, R. F. |author3=Schild, R. E. | title=MK Spectral Types for Bright Southern OB Stars | journal=[[The Astrophysical Journal]] | volume=157 | pages=313 |date=July 1969 | doi=10.1086/150069 | bibcode=1969ApJ...157..313H | doi-access=free}}</ref> | b-v=−0.13<ref name="pasp81">{{cite journal | last=Landolt | first=Arlo U. |date=August 1969 | title=UBV Observations of Selected Double Systems, II | journal=Publications of the Astronomical Society of the Pacific | volume=81 | issue=481 | pages=443–446 | doi=10.1086/128801 | bibcode=1969PASP...81..443L| doi-access=free }}</ref> | u-b=−0.62<ref name="pasp81"/> | variable= }} {{Starbox astrometry | radial_v=+6.0<ref>{{cite journal | author1=Jilinski, E. |author2=Daflon, S. |author3=Cunha, K. |author4=de La Reza, R. | title=Radial velocity measurements of B stars in the Scorpius–Centaurus association | journal=Astronomy and Astrophysics | volume=448 | issue=3 |date=March 2006 | pages=1001–1006 | doi=10.1051/0004-6361:20041614 | bibcode=2006A&A...448.1001J|arxiv = astro-ph/0601643 |s2cid=17818058 }}</ref> | prop_mo_ra=−29.518<ref name=dr3/> | prop_mo_dec=−21.698<ref name=dr3/> | parallax=8.8824 | p_error=0.1293 | parallax_footnote=<ref name=dr3>{{cite Gaia DR3|5869474548409857024}}</ref> | absmag_v=−0.66<ref name=xhip>{{cite XHIP|65271}}</ref> }} {{Starbox detail | mass=4.1<ref name=dr3/><ref name=quintana2025/> | radius=3.6<ref name=dr3/> | luminosity=265<ref name=quintana2025/> | gravity=3.97<ref name=dr3/> | temperature=24,757<ref name=quintana2025>{{cite journal |bibcode=2025MNRAS.538.1367Q |title=A census of OB stars within 1 KPC and the star formation and core collapse supernova rates of the Milky Way |last1=Quintana |first1=Alexis L. |last2=Wright |first2=Nicholas J. |last3=Martínez García |first3=Juan |journal=Monthly Notices of the Royal Astronomical Society |date=2025 |volume=538 |issue=3 |page=1367 |doi=10.1093/mnras/staf083 |doi-access=free |arxiv=2503.08286 }}</ref> | metal= | rotational_velocity=223<ref name="apj133">{{cite journal | author=Wolff, S. C. |display-authors=etal | title=Rotational Velocities for B0-B3 Stars in Seven Young Clusters: Further Study of the Relationship between Rotation Speed and Density in Star-Forming Regions | journal=[[The Astronomical Journal]] | volume=133 | pages=1092–1103 | date=2007 | doi=10.1086/511002 | bibcode=2007AJ....133.1092W|arxiv = astro-ph/0702133 | issue=3 |s2cid=119074863 }}</ref> | age_myr=15.4<ref>{{cite journal |bibcode=2023A&A...678A..93G |title=Multiples among B stars in the Scorpius-Centaurus association |last1=Gratton |first1=R. |last2=Squicciarini |first2=V. |last3=Nascimbeni |first3=V. |last4=Janson |first4=M. |last5=Reffert |first5=S. |last6=Meyer |first6=M. |last7=Delorme |first7=P. |last8=Mamajek |first8=E. E. |last9=Bonavita |first9=M. |last10=Desidera |first10=S. |last11=Mesa |first11=D. |last12=Rigliaco |first12=E. |last13=d'Orazi |first13=V. |last14=Vigan |first14=A. |last15=Lazzoni |first15=C. |last16=Chauvin |first16=G. |last17=Langlois |first17=M. |journal=Astronomy and Astrophysics |date=2023 |volume=678 |pages=A93 |doi=10.1051/0004-6361/202346806 |arxiv=2308.09962 }}</ref> }} {{Starbox catalog | names=[[Harvard Revised catalogue|HR]] 5035, [[Henry Draper Catalogue|HD]] 116087, [[Cordoba Durchmusterung|CD]]−60°4640, [[Fifth Fundamental Catalogue|FK5]] 1347, [[Hipparcos catalogue|HIP]] 65271, [[Smithsonian Astrophysical Observatory catalogue|SAO]] 252284, GC 18087, CCDM J13226-6059<ref name="SIMBAD">{{cite web | title=CCDM J13226-6059AB -- Double or multiple star | work=SIMBAD | publisher=[[Centre de Données astronomiques de Strasbourg]] | url=http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=CCDM+J13226-6059AB | access-date=2009-09-08 }}</ref> }} {{Starbox reference | Simbad=HD+116087 }} {{Starbox end}} '''J Centauri''' (J Cen) is a [[star]] in the [[constellation]] [[Centaurus]]. Its mean [[apparent magnitude]] is 4.5, making it easily visible to the [[naked eye]]. It is approximately 350 [[light year]]s from [[Earth]].

J Centauri is a [[stellar classification|spectral class]] B3V [[main sequence]] star with a [[solar luminosity|luminosity]] 265 times that of the Sun. The temperature of the star's [[photosphere]] is nearly 25,000&nbsp;K. The [[stellar rotation|rotation velocity]] at the equator is at least 223&nbsp;km/s.<ref name="apj133"/> It is believed to be a binary star system.<ref>{{cite journal | author1=Shatsky, N. |author2=Tokovinin, A. | date=2002 | title=The mass ratio distribution of B-type visual binaries in the Sco OB2 association | journal=Astronomy and Astrophysics | volume=382 | pages=92–103 | doi=10.1051/0004-6361:20011542 | bibcode=2002A&A...382...92S|arxiv = astro-ph/0109456 |s2cid=16697655 }}</ref>

This star may be a member of the [[Scorpius–Centaurus association|Scorpio-Centaurus]] [[Stellar association|OB association]] (Sco OB2). This is one of the nearest regions of recent star formation.<ref>{{cite journal|author=Lub, J.|author2=de Geus, E. J.|author3=van de Grift, E.|date=October 1990|title=Walraven photometry of nearby southern OB associations|journal=Astronomy and Astrophysics Supplement Series|volume=85|issue=2|pages=915–970|bibcode=1990A&AS...85..915D}}</ref>

==References== {{reflist}}

{{Stars of Centaurus}}

{{DEFAULTSORT:J Centauri}} [[Category:Bayer objects|Centauri, J]] [[Category:B-type main-sequence stars]] [[Category:Centaurus]] [[Category:Bright Star Catalogue objects|5035]] [[Category:Henry Draper Catalogue objects|116087]] [[Category:Hipparcos objects|065271]] [[Category:Durchmusterung objects|PD-60 04627]]