HD 102776: Difference between revisions

j Centauri
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Centaurus
Right ascension	11h 49m 41.05745s
Declination	−63° 47′ 18.4299″
Apparent magnitude (V)	4.30 (+4.30 - 4.39)
Characteristics
Spectral type	B3V
U−B color index	−0.59
B−V color index	−0.15
Variable type	γ Cas
Astrometry
Radial velocity (Rv)	+29.0±4.1 km/s
Proper motion (μ)	RA: -20.76 ± 0.56 mas/yr ; Dec.: 4.30 ± 0.48 mas/yr
Parallax (π)	5.4391 ± 0.4369 mas
Distance	600 ± 50 ly ; (180 ± 10 pc)
Absolute magnitude (MV)	−1.98
Details
Mass	5.955 M☉; 7.2±0.1 M☉
Radius	5.00±0.10 R☉
Luminosity	1,342 L☉
Surface gravity (log g)	3.20±0.03 cgs
Temperature	20,000±200 K
Rotational velocity (v sin i)	200±4 km/s
Age	31.6±0.6 Myr
Other designations
	j Cen, NSV 5357, CPD−63°1988, FK5 2944, GC 16201, HD 102776, HIP 57669, HR 4537, SAO 251602
Database references
SIMBAD	data

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HD 102776, also known by its Bayer designation j Centauri, is a suspected astrometric binary^[9] star system in the southern constellation of Centaurus. It has a blue-white hue and is faintly visible to the naked eye with a typical apparent visual magnitude of 4.30.^[2] The distance to this star is approximately 600 light years based on parallax, and it is drifting further away with a radial velocity of ~29 km/s.^[2] It is a member of the Lower Centaurus Crux subgroup of the Sco OB2 association.^[10] HD 102776 has a relatively large peculiar velocity of 31.1 km/s and is a candidate runaway star that was ejected from its association, most likely by a supernova explosion.^[11]

The stellar classification of the visible component is B3V,^[4] matching a B-type main-sequence star. It is around 32^[7] million years old and is spinning rapidly with estimates of its projected rotational velocity ranging from 200^[8] up to 270 kms, giving it an equatorial bulge that is up to 11% larger than the polar radius.^[12] This is a Be star showing emission features in its Balmer lines due to a circumstellar disk of decreated gas.^[13] It is classified as a suspected Gamma Cassiopeiae type variable star with a visual magnitude varying from +4.30 down to +4.39.^[3]

References

^ ^a ^b ^c Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
^ ^a ^b ^c ^d ^e ^f Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015.
^ ^a ^b ^c "NSV 5357". Variable Star Index. American Association of Variable Star Observers. Retrieved 2020-02-19.
^ ^a ^b Houk, Nancy (1979). Michigan catalogue of two-dimensional spectral types for the HD stars. Vol. 1. Ann Arbor, Michigan: Department of Astronomy, University of Michigan. Bibcode:1978mcts.book.....H.
^ ^a ^b van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
^ Kervella, Pierre; Arenou, Frédéric; Mignard, François; Thévenin, Frédéric (2019). "Stellar and substellar companions of nearby stars from Gaia DR2. Binarity from proper motion anomaly". Astronomy and Astrophysics. 623: A72. arXiv:1811.08902. Bibcode:2019A&A...623A..72K. doi:10.1051/0004-6361/201834371.
^ ^a ^b ^c Tetzlaff, N.; et al. (January 2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410 (1): 190–200. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x. S2CID 118629873.
^ ^a ^b ^c ^d ^e Arcos, C.; et al. (March 2018). "Stellar parameters and H α line profile variability of Be stars in the BeSOS survey". Monthly Notices of the Royal Astronomical Society. 474 (4): 5287–5299. arXiv:1711.08675. Bibcode:2018MNRAS.474.5287A. doi:10.1093/mnras/stx3075.
^ Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x.
^ Brown, A. G. A.; Verschueren, W. (March 1997). "High S/N Echelle spectroscopy in young stellar groups. II. Rotational velocities of early-type stars in SCO OB2". Astronomy and Astrophysics. 319: 811–838. arXiv:astro-ph/9608089. Bibcode:1997A&A...319..811B.
^ Hoogerwerf, R.; et al. (January 2001). "On the origin of the O and B-type stars with high velocities. II. Runaway stars and pulsars ejected from the nearby young stellar groups". Astronomy and Astrophysics. 365: 49–77. arXiv:astro-ph/0010057. Bibcode:2001A&A...365...49H. doi:10.1051/0004-6361:20000014.
^ van Belle, Gerard T. (March 2012). "Interferometric observations of rapidly rotating stars". The Astronomy and Astrophysics Review. 20 (1): 51. arXiv:1204.2572. Bibcode:2012A&ARv..20...51V. doi:10.1007/s00159-012-0051-2. S2CID 119273474.
^ Arcos, C.; et al. (June 2017). "Evidence for Different Disk Mass Distributions between Early- and Late-type Be Stars in the BeSOS Survey". The Astrophysical Journal. 842 (1): 18. arXiv:1704.08133. Bibcode:2017ApJ...842...48A. doi:10.3847/1538-4357/aa6f5f. 48.{{cite journal}}: CS1 maint: unflagged free DOI (link)

[GaiaDR2-1] Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.

[xhip-2] ^ ^a ^b ^c ^d ^e ^f Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015.

[vsx-3] "NSV 5357". Variable Star Index. American Association of Variable Star Observers. Retrieved 2020-02-19.

[Houk1979-4] Houk, Nancy (1979). Michigan catalogue of two-dimensional spectral types for the HD stars. Vol. 1. Ann Arbor, Michigan: Department of Astronomy, University of Michigan. Bibcode:1978mcts.book.....H.

[van_Leeuwen2007-5] van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry

[kervella2019-6] Kervella, Pierre; Arenou, Frédéric; Mignard, François; Thévenin, Frédéric (2019). "Stellar and substellar companions of nearby stars from Gaia DR2. Binarity from proper motion anomaly". Astronomy and Astrophysics. 623: A72. arXiv:1811.08902. Bibcode:2019A&A...623A..72K. doi:10.1051/0004-6361/201834371.

[Tetzlaff_et_al_2011-7] Tetzlaff, N.; et al. (January 2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society. 410 (1): 190–200. arXiv:1007.4883. Bibcode:2011MNRAS.410..190T. doi:10.1111/j.1365-2966.2010.17434.x. S2CID 118629873.

[Arcos2018-8] Arcos, C.; et al. (March 2018). "Stellar parameters and H α line profile variability of Be stars in the BeSOS survey". Monthly Notices of the Royal Astronomical Society. 474 (4): 5287–5299. arXiv:1711.08675. Bibcode:2018MNRAS.474.5287A. doi:10.1093/mnras/stx3075.

[Eggleton_Tokovinin_2008-9] Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x.

[Brown_Verschueren_1997-10] Brown, A. G. A.; Verschueren, W. (March 1997). "High S/N Echelle spectroscopy in young stellar groups. II. Rotational velocities of early-type stars in SCO OB2". Astronomy and Astrophysics. 319: 811–838. arXiv:astro-ph/9608089. Bibcode:1997A&A...319..811B.

[Hoogerwerf_et_al_2001-11] Hoogerwerf, R.; et al. (January 2001). "On the origin of the O and B-type stars with high velocities. II. Runaway stars and pulsars ejected from the nearby young stellar groups". Astronomy and Astrophysics. 365: 49–77. arXiv:astro-ph/0010057. Bibcode:2001A&A...365...49H. doi:10.1051/0004-6361:20000014.

[vanBelle2012-12] van Belle, Gerard T. (March 2012). "Interferometric observations of rapidly rotating stars". The Astronomy and Astrophysics Review. 20 (1): 51. arXiv:1204.2572. Bibcode:2012A&ARv..20...51V. doi:10.1007/s00159-012-0051-2. S2CID 119273474.

[Arcos2017-13] Arcos, C.; et al. (June 2017). "Evidence for Different Disk Mass Distributions between Early- and Late-type Be Stars in the BeSOS Survey". The Astrophysical Journal. 842 (1): 18. arXiv:1704.08133. Bibcode:2017ApJ...842...48A. doi:10.3847/1538-4357/aa6f5f. 48.{{cite journal}}: CS1 maint: unflagged free DOI (link)

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@@ Line 1: / Line 1: @@
 {{about-distinguish2|j centauri|[[J Centauri]], [[1 Centauri|i Centauri]], [[HD 110073|l Centauri]], or [[Iota Centauri|ι Centauri]]}}
 {{Starbox begin
-| name = j Centauri
+ | name = j Centauri
 }}
 {{Starbox observe
-| epoch = J2000.0
+ | epoch       = J2000.0
-| constell = [[Centaurus]]
+ | constell    = [[Centaurus]]
-| ra = {{RA|11|49|41.06}}<ref name="van Leeuwen2007"/>
+ | ra          = {{RA|11|49|41.05745}}<ref name=GaiaDR2/>
-| dec = {{DEC|−63|47|18.5}}<ref name="van Leeuwen2007"/>
+ | dec         = {{DEC|−63|47|18.4299}}<ref name=GaiaDR2/>
-| appmag_v = +4.30 - 4.39<ref name=vsx/>
+ | appmag_v    = 4.30<ref name=xhip/> {{nowrap|(+4.30 - 4.39)}}<ref name=vsx/>
 }}
 {{Starbox character
-| class = B3Vne
+ | type        =
+ | class       = B3V<ref name=Houk1979/>
-| b-v = −0.15
-| u-b = −0.59
+ | b-v         = −0.15
-| variable = [[Gamma Cassiopeiae variable|γ Cas]]<ref name=vsx/>
+ | u-b         = −0.59
+ | variable    = [[Gamma Cassiopeiae variable|γ Cas]]<ref name=vsx/>
 }}
 {{Starbox astrometry
-| radial_v = +29
+ | radial_v    = {{val|+29.0|4.1}}<ref name=xhip/>
-| prop_mo_ra = -20.76 ± 0.56<ref name="van Leeuwen2007"/>
+ | prop_mo_ra  = -20.76 ± 0.56<ref name="van Leeuwen2007"/>
-| prop_mo_dec = 4.30 ± 0.48<ref name="van Leeuwen2007"/>
+ | prop_mo_dec = 4.30 ± 0.48<ref name="van Leeuwen2007"/>
-| parallax = 5.48
+ | parallax    = 5.4391
-| p_error = 0.59
+ | p_error     = 0.4369
-| parallax_footnote = <ref name="van Leeuwen2007"/>
+ | parallax_footnote = <ref name=GaiaDR2/>
-| absmag_v = −1.98<ref name=xhip/>
+ | absmag_v    = −1.98<ref name=xhip/>
 }}
 {{Starbox detail
  | source      =
- | mass        = 5.955<ref name=kervella2019/>
+ | mass        = {{val|5.955|u=solar mass}}<ref name=kervella2019/><br>{{val|7.2|0.1}}<ref name=Tetzlaff_et_al_2011/>
  | radius      = {{Val|5.00|0.10}}<ref name=Arcos2018/>
  | luminosity  = 1,342<ref name=xhip/>
@@ Line 34: / Line 35: @@
  | metal_fe    =
  | rotational_velocity = {{Val|200|4}}<ref name=Arcos2018/>
- | age_myr     =
+ | age_myr     = {{val|31.6|0.6}}<ref name=Tetzlaff_et_al_2011/>
 }}
 {{Starbox catalog
-| names = [[Harvard Revised catalogue|HR]]&nbsp;4537, [[Henry Draper Catalogue|HD]]&nbsp;102776, [[Durchmusterung|CP]]−63°1988, [[Fifth Fundamental Catalogue|FK5]]&nbsp;2944, [[Hipparcos catalogue|HIP]]&nbsp;57669, [[Smithsonian Astrophysical Observatory catalogue|SAO]]&nbsp;251602, GC&nbsp;16201, [[General Catalogue of Variable Stars|NSV]]&nbsp;5357
+ | names = {{odlist | B=j Cen | HR=4537 | HD=102776 | CP=−63°1988 | FK5=2944 | HIP=57669 | SAO=251602 | GC=16201 | NSV=5357 }}
 }}
 {{Starbox reference
-| Simbad=HD+102776
+ | Simbad=HD+102776
 }}
 {{Starbox end}}
-'''HD 102776''', also known by its [[Bayer designation]] '''j Centauri''' (j Cen), is a [[star]] in the [[constellation]] [[Centaurus]].
+'''HD 102776''', also known by its [[Bayer designation]] '''j Centauri''', is a suspected [[astrometric binary]]<ref name=Eggleton_Tokovinin_2008/> [[star]] system in the southern [[constellation]] of [[Centaurus]]. It has a blue-white hue and is faintly visible to the naked eye with a typical [[apparent visual magnitude]] of 4.30.<ref name=xhip/> The distance to this star is approximately 600&nbsp;[[light year]]s based on [[stellar parallax|parallax]], and it is drifting further away with a [[radial velocity]] of ~29&nbsp;km/s.<ref name=xhip/> It is a member of the Lower Centaurus Crux subgroup of the [[Sco OB2]] association.<ref name=Brown_Verschueren_1997/> HD 102776 has a relatively large [[peculiar velocity]] of {{val|31.1|u=km/s}} and is a candidate [[runaway star]] that was ejected from its association, most likely by a [[supernova]] explosion.<ref name=Hoogerwerf_et_al_2001/>
-j Centauri is a blue-white [[stellar classification|B-type]] [[main sequence|main sequence dwarf]].  It is approximately 600 [[light years]] from [[Earth]].  It is classified as a suspected [[Gamma Cassiopeiae variable|Gamma Cassiopeiae type]] [[variable star]] and with a [[visual magnitude]] varying from magnitude +4.30 to +4.39.<ref name=vsx/>
+The [[stellar classification]] of the visible component is B3V,<ref name=Houk1979/> matching a [[B-type main-sequence star]]. It is around 32<ref name=Tetzlaff_et_al_2011/>&nbsp;million years old and is spinning rapidly with estimates of its [[projected rotational velocity]] ranging from 200<ref name=Arcos2018/> up to {{val|270|u=kms}}, giving it an [[equatorial bulge]] that is up to 11% larger than the polar radius.<ref name=vanBelle2012/> This is a [[Be star]] showing [[emission line|emission]] features in its [[Balmer lines]] due to a circumstellar disk of decreated gas.<ref name=Arcos2017/> It is classified as a suspected [[Gamma Cassiopeiae variable|Gamma Cassiopeiae type]] [[variable star]] with a [[visual magnitude]] varying from +4.30 down to +4.39.<ref name=vsx/>
 == References ==
 {{Reflist|colwidth=30em|refs=
+<ref name=GaiaDR2>{{Cite Gaia DR2|5333141671190375040}}</ref>
-<ref name="van Leeuwen2007">{{cite journal | title=Validation of the new Hipparcos reduction | url=http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2007A%2526A...474..653VFUL | last1=van Leeuwen | first1=F. | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | year=2007 | arxiv=0708.1752 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 }} [http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=57481 Vizier catalog entry ]</ref>
+<ref name=Arcos2017>{{cite journal
+ | title=Evidence for Different Disk Mass Distributions between Early- and Late-type Be Stars in the BeSOS Survey
+ | display-authors=1 | last1=Arcos | first1=C.
+ | last2=Jones | first2=C. E. | last3=Sigut | first3=T. A. A.
+ | last4=Kanaan | first4=S. | last5=Curé | first5=M.
+ | journal=The Astrophysical Journal
+ | volume=842 | issue=1 | id=48 | pages=18 | date=June 2017
+ | arxiv=1704.08133 | bibcode=2017ApJ...842...48A
+ | doi=10.3847/1538-4357/aa6f5f }}</ref>
+<ref name=Hoogerwerf_et_al_2001>{{cite journal
+ | title=On the origin of the O and B-type stars with high velocities. II. Runaway stars and pulsars ejected from the nearby young stellar groups
+ | display-authors=1 | last1=Hoogerwerf | first1=R.
+ | last2=de Bruijne | first2=J. H. J. | last3=de Zeeuw | first3=P. T.
+ | journal=Astronomy and Astrophysics
+ | volume=365 | pages=49–77 | date=January 2001
+ | arxiv=astro-ph/0010057 | bibcode=2001A&A...365...49H
+ | doi=10.1051/0004-6361:20000014 }}</ref>
+<ref name=Tetzlaff_et_al_2011>{{cite journal
+ | title=A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun
+ | display-authors=1 | last1=Tetzlaff | first1=N.
+ | last2=Neuhäuser | first2=R. | last3=Hohle | first3=M. M.
+ | journal=Monthly Notices of the Royal Astronomical Society
+ | volume=410 | issue=1 | pages=190–200 |date=January 2011
+ | doi=10.1111/j.1365-2966.2010.17434.x | s2cid=118629873
+ | bibcode=2011MNRAS.410..190T | arxiv=1007.4883 }}</ref>
+<ref name=vanBelle2012>{{cite journal
+ | last1=van Belle | first1=Gerard T.
+ | title=Interferometric observations of rapidly rotating stars
+ | journal=The Astronomy and Astrophysics Review
+ | volume=20 | issue=1 | page=51 | date=March 2012
+ | doi=10.1007/s00159-012-0051-2 | arxiv=1204.2572
+ | bibcode=2012A&ARv..20...51V | s2cid=119273474 }}</ref>
+<ref name=Houk1979>{{cite book
+ | last1=Houk | first1=Nancy
+ | title=Michigan catalogue of two-dimensional spectral types for the HD stars
+ | publisher=Department of Astronomy, University of Michigan
+ | location=Ann Arbor, Michigan | volume=1 | year=1979
+ | bibcode=1978mcts.book.....H }}</ref>
+<ref name=Eggleton_Tokovinin_2008>{{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
+ | doi=10.1111/j.1365-2966.2008.13596.x | arxiv=0806.2878
+ | bibcode=2008MNRAS.389..869E }}</ref>
+<ref name=Brown_Verschueren_1997>{{cite journal
+ | title=High S/N Echelle spectroscopy in young stellar groups. II. Rotational velocities of early-type stars in SCO OB2
+ | last1=Brown | first1=A. G. A. | last2=Verschueren | first2=W.
+ | journal=Astronomy and Astrophysics
+ | volume=319 | pages=811–838 | date=March 1997
+ | arxiv=astro-ph/9608089 | bibcode=1997A&A...319..811B }}</ref>
+<ref name="van Leeuwen2007">{{cite journal
+ | title=Validation of the new Hipparcos reduction
+ | last1=van Leeuwen | first1=F.
+ | journal=Astronomy and Astrophysics
+ | volume=474 | issue=2 | pages=653–664 | year=2007
+ | arxiv=0708.1752 | bibcode=2007A&A...474..653V
+ | doi=10.1051/0004-6361:20078357
+}} [http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=57481 Vizier catalog entry ]</ref>
 <ref name=Arcos2018>{{cite journal
@@ Line 62: / Line 131: @@
  | arxiv=1711.08675 }}</ref>
-<ref name=vsx>{{cite web |url=https://www.aavso.org/vsx/index.php?view=detail.top&oid=43981 |title=NSV 5357 |website=Variable Star Index |access-date=2020-02-19 }}</ref>
+<ref name=vsx>{{cite web
+ | url=https://www.aavso.org/vsx/index.php?view=detail.top&oid=43981
+ | title=NSV 5357 | website=Variable Star Index
+ | publisher=American Association of Variable Star Observers
+ | access-date=2020-02-19 }}</ref>
+<ref name=xhip>{{cite journal
-<ref name=xhip>{{cite journal |bibcode=2012AstL...38..331A |title=XHIP: An extended hipparcos compilation |journal=Astronomy Letters |volume=38 |issue=5 |pages=331 |last1=Anderson |first1=E. |last2=Francis |first2=Ch. |year=2012 |arxiv=1108.4971 |doi=10.1134/S1063773712050015 }}</ref>
+ | title=XHIP: An extended hipparcos compilation
+ | last1=Anderson | first1=E. | last2=Francis | first2=Ch.
+ | journal=Astronomy Letters
+ | volume=38 | issue=5 | pages=331 | year=2012
+ | bibcode=2012AstL...38..331A | arxiv=1108.4971
+ | doi=10.1134/S1063773712050015 }}</ref>
+<ref name=kervella2019>{{cite journal
-<ref name=kervella2019>{{cite journal |bibcode=2019A&A...623A..72K |title=Stellar and substellar companions of nearby stars from Gaia DR2. Binarity from proper motion anomaly |journal=Astronomy and Astrophysics |volume=623 |pages=A72 |last1=Kervella |first1=Pierre |last2=Arenou |first2=Frédéric |last3=Mignard |first3=François |last4=Thévenin |first4=Frédéric |year=2019 |arxiv=1811.08902 |doi=10.1051/0004-6361/201834371 }}</ref>
+ | title=Stellar and substellar companions of nearby stars from Gaia DR2. Binarity from proper motion anomaly
+ | last1=Kervella | first1=Pierre | last2=Arenou | first2=Frédéric
+ | last3=Mignard | first3=François | last4=Thévenin | first4=Frédéric
+ | journal=Astronomy and Astrophysics
+ | volume=623 | pages=A72 | year=2019
+ | bibcode=2019A&A...623A..72K | arxiv=1811.08902
+ | doi=10.1051/0004-6361/201834371 }}</ref>
 }}
@@ Line 73: / Line 159: @@
 {{DEFAULTSORT:Hd 102776}}
+<!-- Properties -->
-[[Category:Bayer objects|Centauri, j]]
 [[Category:B-type main-sequence stars]]
-[[Category:Centaurus (constellation)]]
+[[Category:Gamma Cassiopeiae variable stars]]
 [[Category:Be stars]]
-[[Category:Henry Draper Catalogue objects|102776]]
 [[Category:Suspected variables]]
+<!-- Other -->
+[[Category:Centaurus (constellation)]]
+[[Category:Bayer objects|Centauri, j]]
+[[Category:Durchmusterung objects|CD-63 00674]]
+[[Category:Henry Draper Catalogue objects|102776]]
 [[Category:Hipparcos objects|057669]]
 [[Category:HR objects|4537]]
-[[Category:Durchmusterung objects|CD-63 00674]]
-[[Category:Gamma Cassiopeiae variable stars]]
-{{Var-star-stub}}

Observation data Epoch J2000.0 Equinox J2000.0
Constellation	Centaurus
Right ascension	11^h 49^m 41.05745^s^[1]
Declination	−63° 47′ 18.4299″^[1]
Apparent magnitude (V)	4.30^[2] (+4.30 - 4.39)^[3]
Characteristics
Spectral type	B3V^[4]
U−B color index	−0.59
B−V color index	−0.15
Variable type	γ Cas^[3]
Astrometry

Radial velocity (R_v)	+29.0±4.1^[2] km/s
Proper motion (μ)	RA: -20.76 ± 0.56^[5] mas/yr Dec.: 4.30 ± 0.48^[5] mas/yr
Parallax (π)	5.4391 ± 0.4369 mas^[1]
Distance	600 ± 50 ly (180 ± 10 pc)
Absolute magnitude (M_V)	−1.98^[2]

Details

Mass	5.955 M_☉^[6] 7.2±0.1^[7] `M`_☉
Radius	5.00±0.10^[8] `R`_☉
Luminosity	1,342^[2] `L`_☉
Surface gravity (log g)	3.20±0.03^[8] cgs
Temperature	20,000±200^[8] K
Rotational velocity (v sin i)	200±4^[8] km/s
Age	31.6±0.6^[7] Myr

Other designations
j Cen, NSV 5357, CPD−63°1988, FK5 2944, GC 16201, HD 102776, HIP 57669, HR 4537, SAO 251602
Database references
SIMBAD	data