YoulaAzkarrula at 11:10, 6 February 2026

2026-02-06T11:10:19Z

← Older revision		Revision as of 11:10, 6 February 2026
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	\| notes =		\| notes =
	}}		}}


			{{Starbox begin
			\| name = Alpha Centauri AB{{efn\|Proxima Centauri is gravitationally bound to the {{nobr\|α Centauri}} system, but for practical and historical reasons it is described in detail in [[Proxima Centauri\|its own article]].}}
			}}
			{{Starbox image
			\| image = [[File:The sky around Alpha Centauri and Proxima Centauri (eso1629i).jpg\|300px\|alt=One bright star against a dense background of fainter stars, with one of the fainter stars circled and annotated.]]
			\| caption = {{longitem\|Alpha Centauri AB (left) forms a triple star system with [[Proxima Centauri]] (below, south of, {{nobr\|α Centauri AB}}). <br/>(See [[:File:The sky around Alpha Centauri and Proxima Centauri (annotated) (eso1629f).jpg\|labelled version]])\|style=font-size: 1em; padding: 4px 0;}}
			}}
			{{Starbox observe 2s
			\| epoch = [[J2000.0]]
			\| constell = [[Centaurus]]
			\| component1 = {{nobr\|α Centauri A}} (Rigil Kentaurus)
			\| ra1 = {{RA\|14\|39\|36.49400}}<ref name=hipparcos>{{cite journal \|last1=Van Leeuwen \|first1=F. \|year=2007 \|title=Validation of the new Hipparcos reduction \|journal=Astronomy and Astrophysics \|volume=474 \|issue=2 \|pages=653–664 \|doi=10.1051/0004-6361:20078357 \|arxiv=0708.1752 \|bibcode=2007A&A...474..653V \|s2cid=18759600}}</ref>
			\| dec1 = {{DEC\|−60\|50\|02.3737}}<ref name=hipparcos/>
			\| appmag_v1 = +0.01<ref name=ducati>{{cite report \|last1=Ducati \|first1=J. R. \|year=2002 \|title=Catalogue of Stellar Photometry in Johnson's 11 color system \|series=CDS/ADC Collection of Electronic Catalogues \|volume=2237 \|department = VizieR Online Data Catalog \|bibcode=2002yCat.2237....0D }}</ref>
			\| component2 = {{nobr\|α Centauri B}} (Toliman)
			\| ra2 = {{RA\|14\|39\|35.06311}}<ref name=hipparcos/>
			\| dec2 = {{DEC\|−60\|50\|15.0992}}<ref name=hipparcos/>
			\| appmag_v2 = +1.33<ref name=ducati/>
			}}
			{{Starbox character
			\| engvar = en-UK
			\| component = A
			\| class = G2V<ref name=torres2006>{{cite journal \|last1=Torres \|first1=C.A.O. \|last2=Quast\|first2=G.R. \|last3=da Silva \|first3=L. \|last4=de la Reza \|first4=R. \|last5=Melo \|first5=C.H.F. \|last6=Sterzik \|first6=M. \|year=2006 \|title=Search for associations containing young stars (SACY) \|journal=[[Astronomy and Astrophysics]] \|volume=460 \|issue=3 \|pages=695–708 \|issn=0004-6361 \|doi=10.1051/0004-6361:20065602 \|arxiv=astro-ph/0609258 \|bibcode=2006A&A...460..695T \|s2cid=16080025}}</ref>
			\| b-v = +0.71<ref name=ducati/>
			\| u-b =
			\| component2 = B
			\| class2 = K1V<ref name=torres2006/>
			\| b-v2 = +0.88<ref name=ducati/>
			\| u-b2 =
			}}
			{{Starbox astrometry
			\| component1 = A
			\| radial_v = {{val\|−21.4\|0.76}}<ref name=valenti2005>{{cite journal \|last1=Valenti \|first1=Jeff A. \|last2=Fischer \|first2=Debra A. \|year=2005 \|title=Spectroscopic properties of cool stars (SPOCS) I. 1040 F, G, and K dwarfs from Keck, Lick, and AAT planet search programs \|journal=The Astrophysical Journal Supplement Series \|volume=159 \|issue=1 \|pages=141–166 \|issn=0067-0049 \|doi=10.1086/430500 \|doi-access=free \|bibcode=2005ApJS..159..141V }}</ref>
			\| prop_mo_ra = −3679.25<ref name=hipparcos/>
			\| prop_mo_dec = +473.67<ref name=hipparcos/>
			\| parallax = 750.81
			\| p_error = 0.38
			\| parallax_footnote = <ref name=Akeson2021>{{cite journal \|last1=Akeson \|first1=Rachel \|last2=Beichman \|first2=Charles \|last3=Kervella \|first3=Pierre \|last4=Fomalont \|first4=Edward \|last5=Benedict \|first5=G. Fritz \|date=20 April 2021 \|title=Precision millimeter astrometry of the {{nobr\|α Centauri AB}} system \|journal= [[The Astronomical Journal]] \|volume=162 \|issue=1 \|page=14 \|s2cid=233307418 \|doi-access=free \|doi=10.3847/1538-3881/abfaff \|bibcode=2021AJ....162...14A \|arxiv=2104.10086 }}</ref>
			\| absmag_v = 4.38<ref name=Wiegert/>
			\| component2 = B
			\| radial_v2 = {{val\|−18.6\|1.64}}<ref name=valenti2005/>
			\| prop_mo_ra2 = −3614.39<ref name=hipparcos/>
			\| prop_mo_dec2 = +802.98<ref name=hipparcos/>
			\| parallax2 = 750.81
			\| p_error2 = 0.38
			\| parallax_footnote2 = <ref name=Akeson2021/>
			\| absmag_v2 = 5.71<ref name=Wiegert/>
			}}
			{{Starbox orbit
			\| primary = A
			\| name = B
			\| period = {{val\|79.762\|0.019}}
			\| axis = {{val\|17.493\|0.0096}}
			\| axis_unitless = 23.299 [[Astronomical unit\|AU]]{{efn\|Semi-major axis in AU {{=}} {{sfrac\|semimajor axis in seconds\| parallax}} {{=}} {{sfrac\|17.493″\|0.75081}} {{=}} 23.299 AU; as the eccentricity is 0.52, the distance fluctuates between 48% and 152% of that, roughly from 11 AU to 35 AU.}}
			\| eccentricity = {{val\|0.51947\|0.00015}}
			\| inclination = {{val\|79.243\|0.0089}}
			\| node = {{val\|205.073\|0.025}}
			\| periastron = {{val\|1875.66\|0.012}}
			\| periarg = {{val\|231.519\|0.027}}
			\| reference = <ref name=Akeson2021/>
			}}
			{{Starbox detail
			\| component1 = {{nobr\|α Centauri A}}
			\| mass = {{Val\|1.0788\|0.0029}}<ref name=Akeson2021/>
			\| radius = {{Val\|1.2175\|0.0055}}<ref name=Akeson2021/>
			\| gravity = 4.30<ref name=aaa449>{{cite journal \|last1=Gilli \|first1=G. \|last2=Israelian \|first2=G. \|last3=Ecuvillon \|first3=A. \|last4=Santos \|first4=N.C. \|last5=Mayor \|first5=M. \|year=2006 \|title=Abundances of refractory elements in the atmospheres of stars with extrasolar planets \|journal=[[Astronomy and Astrophysics]] \|volume=449 \|issue=2 \|pages=723–736 \|id=libcode 2005astro.ph.12219G \|doi=10.1051/0004-6361:20053850 \|arxiv=astro-ph/0512219 \|bibcode=2006A&A...449..723G \|s2cid=13039037}}</ref>
			\| luminosity = {{Val\|1.5059\|0.0019}}<ref name=Akeson2021/>
			\| temperature = {{val\|5804\|13\|fmt=commas}}<ref name="soubiran">{{Cite journal \|last1=Soubiran \|first1=C. \|last2=Creevey \|first2=O. L. \|last3=Lagarde \|first3=N. \|last4=Brouillet \|first4=N. \|last5=Jofré \|first5=P. \|last6=Casamiquela \|first6=L. \|last7=Heiter \|first7=U. \|last8=Aguilera-Gómez \|first8=C. \|last9=Vitali \|first9=S. \|last10=Worley \|first10=C. \|last11=de Brito Silva \|first11=D. \|date=2024-02-01 \|title=Gaia FGK benchmark stars: Fundamental Teff and log g of the third version \|bibcode=2024A&A...682A.145S \|journal=Astronomy and Astrophysics \|volume=682 \|pages=A145 \|doi=10.1051/0004-6361/202347136 \|arxiv=2310.11302 \|issn=0004-6361}} [https://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/A%2BA/682/A145&Plx=%3E500 Alpha Centauri's database entry] at [[VizieR]].</ref>
			\| metal_fe = {{val\|0.20\|0.01}}<ref name=soubiran/>
			\| rotational_velocity = {{val\|2.7\|0.7}}<ref name=aaa470>{{cite journal \|last1=Bazot \|first1=M. \|display-authors=etal \|year=2007 \|title=Asteroseismology of {{nobr\|α Centauri A.}} Evidence of rotational splitting \|journal=[[Astronomy and Astrophysics]] \|volume=470 \|issue=1 \|pages=295–302 \|doi=10.1051/0004-6361:20065694 \|bibcode=2007A&A...470..295B \|arxiv=0706.1682 \|s2cid=118785894 }}</ref>
			\| rotation = {{val\|28.3\|0.5\|ul=days}}<ref name=Huber2020>{{cite journal \|last1=Huber \|first1=Daniel \|last2=Zwintz \|first2=Konstanze \|collaboration=the BRITE team \|date=July 2020 \|title=Solar-like oscillations: Lessons learned & first results from TESS \|journal=Stars and Their Variability Observed from Space \|page=457 \|bibcode=2020svos.conf..457H \|arxiv=2007.02170 }}</ref>
			\| age_gyr = {{val\|5.26\|0.95}}<ref name=joyce/>
			\| component2 = {{nobr\|α Centauri B}}
			\| mass2 = {{Val\|0.9092\|0.0025}}<ref name=Akeson2021/>
			\| radius2 = {{Val\|0.8591\|0.0036}}<ref name=Akeson2021/>
			\| gravity2 = 4.37<ref name=aaa449/>
			\| luminosity2 = {{Val\|0.4981\|0.0007}}<ref name=Akeson2021/>
			\| temperature2 = {{val\|5207\|12\|fmt=commas}}<ref name=soubiran/>
			\| metal_fe2 = {{val\|0.24\|0.01}}<ref name=soubiran/>
			\| rotational_velocity2 = {{val\|1.1\|0.8}}<ref name=raassen2003>{{cite journal \|last1=Raassen \|first1=A.J.J. \|last2=Ness \|first2=J.-U. \|last3=Mewe \|first3=R. \|last4=van der Meer \|first4=R.L.J. \|last5=Burwitz \|first5=V. \|last6=Kaastran \|first6=J.S. \|year=2003 \|title=Chandra-LETGS X-ray observation of {{nobr\|α Centauri:}} A nearby (G2V + K1V) binary system \|journal=[[Astronomy & Astrophysics]] \|volume=400 \|issue=2 \|pages=671–678 \|bibcode=2003A&A...400..671R \|doi=10.1051/0004-6361:20021899 \|doi-access=free}}</ref>
			\| rotation2 = {{val\|36.7\|0.3\|ul=days}}<!-- <ref name=dewarf2010>{{cite journal \|last1=De Warf \|first1=L. \|last2=Datin \|first2=K. \|last3=Guinan \|first3=E. \|title=X-ray, FUV, and UV observations of {{nobr\|α Centauri B:}} Determination of long-term magnetic activity cycle and rotation period \|journal=[[The Astrophysical Journal]] \|volume=722 \|issue=1 \|year=2010 \|pages=343–357 \|doi=10.1088/0004-637X/722/1/343 \|arxiv=1009.1652 \|bibcode=2010ApJ...722..343D \|s2cid=118635144 }}</ref> --><ref name=Dumusque2014>{{cite journal \|last1=Dumusque \|first1=Xavier \|date=December 2014 \|title=Deriving Stellar Inclination of Slow Rotators Using Stellar Activity \|journal=[[The Astrophysical Journal]] \|volume=796 \|issue=2 \|page=133 \|doi=10.1088/0004-637X/796/2/133 \|arxiv=1409.3593 \|bibcode=2014ApJ...796..133D\|s2cid=119184190 }}</ref>
			\| age_gyr2 = {{val\|5.26\|0.95}}<ref name=joyce>{{cite journal \|last1=Joyce \|first1=M. \|last2=Chaboyer \|first2=B. \|year=2018 \|title=Classically and asteroseismically constrained 1D stellar evolution models of {{nobr\|α Centauri A}} and B using empirical mixing length calibrations \|journal=[[The Astrophysical Journal]] \|volume=864 \|issue=1 \|page=99 \|arxiv=1806.07567 \|bibcode=2018ApJ...864...99J \|doi=10.3847/1538-4357/aad464 \|doi-access=free \|s2cid=119482849 }}</ref>
			}}
			{{Starbox catalog
			\| names = {{odlist \| B=α Cen \| CCDM=J14396-6050 \| CD=-60°5293 \| CPD=-60°5483 \| FK5=538 \| GC=19728 \| GJ=559 \| SAO=252838}}
			\| component1 = α Cen A
			\| names1 = {{odlist \| name=Rigil Kentaurus, Rigil Kent \| B=α<sup>1</sup> Cen \| HD=128620 \| HIP=71683 \| HR=5459 \| LHS=50 \| PLX=3309}}
			\| component2 = α Cen B
			\| names2 = {{odlist \| name=Toliman \| B=α<sup>2</sup> Cen \| HD=128621 \| HIP=71681 \| HR=5460 \| LHS=51}}
			}}
			{{Starbox reference
			\| Simbad = alpha+centauri\|sn = AB
			\| Simbad2 = TYC+9007-5849-1\|sn2 = A
			\| Simbad3 = TYC+9007-5848-1\|sn3 = B
			\| NSTED = HR_5459
			\| ARICNS = 01151
			}}
			{{Starbox end}}

YoulaAzkarrula at 11:02, 6 February 2026

2026-02-06T11:02:33Z

← Older revision		Revision as of 11:02, 6 February 2026
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	Try for some template		Try for some template

			{{Infobox constellation
			\| name = ᬓᬮᬲᬸᬗ᭄ᬲᬂ (kala sungsang)
			\| native = ᬓᬮᬲᬸᬗ᭄ᬲᬂ
			\| translation = an upside-down demon
			\| pronounce = kala sungsang
			\| IPA = [ˈka.lə ˈsuŋ.saŋ]
			\| culture = Balinese
			\| RA = 208.6711622 to 228.8756784
			\| dec = 13.72841686 to 40.39056857
			\| areatotal = 295.17
			\| numbermainstars = 46
			\| numberbfstars = 21
			\| numberstarsplanets =
			\| numberbrightstars = 3
			\| numbernearbystars =
			\| brighteststarname = Arcturus
			\| starmagnitude = -0.05
			\| neareststarname =
			\| stardistance =
			\| numbermessierobjects =
			\| meteorshowers =
			\| bordering = Boo
			\| notes =
			}}

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2026-02-06T11:01:17Z

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YoulaAzkarrula at 11:10, 6 February 2026

YoulaAzkarrula at 11:02, 6 February 2026

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