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{{Starbox begin
{{Starbox begin}}
| name=Lambda Ophiuchi }}
{{Starbox observe
{{Starbox observe
| epoch=J2000
| epoch = J2000
| constell = [[Ophiuchus]]
| ra={{RA|16|30|54.8229}}<ref name=aaa323/>
| dec={{DEC|+01|59|02.123}}<ref name=aaa323/>
| ra = {{RA|16|30|54.82314}}<ref name=vanLeeuwen2007/>
| appmag_v=3.90<ref name=SIMBAD/>
| dec = {{DEC|+01|59|02.1209}}<ref name=vanLeeuwen2007/>
| appmag_v = 3.82<ref name=Anderson2012/> {{nowrap|4.18 + 5.22 + 11.0)}}<ref name=Eggleton2008/>
| constell=[[Ophiuchus]] }}
}}
{{Starbox character
{{Starbox character
| class=A0V+<ref name=SIMBAD/>
| class = {{nowrap|A0V + A4V}}<ref name=Edwards1976/>
| b-v=+0.01<ref name=clpl4/>
| b-v = {{Val|+0.022|0.014}}<ref name=Anderson2012/>
| u-b=+0.01<ref name=clpl4/>
| u-b = +0.01<ref name=clpl4/>
| variable=Suspected }}
| variable = Suspected<ref name=Samus2017/>
}}
{{Starbox astrometry
{{Starbox astrometry
| radial_v=–13.5<ref name=rgcrv/>
| radial_v = {{Val|−16.0|1.5}}<ref name=Anderson2012/>
| prop_mo_ra=–31.37
| prop_mo_ra = –30.98<ref name=vanLeeuwen2007/>
| prop_mo_dec=–73.00
| prop_mo_dec = –73.42<ref name=vanLeeuwen2007/>
| parallax=19.63
| parallax = 18.84
| p_error=1.34
| p_error = 0.55
| parallax_footnote=<ref name=aaa323/>
| parallax_footnote = <ref name=vanLeeuwen2007/>
| absmag_v= }}
| absmag_v = 0.20<ref name=Anderson2012/>
}}
{{Starbox orbit
{{Starbox orbit
| reference = <ref name=orb/>
| reference=<ref name=orb>{{cite journal|title=The visual binary Lambda Ophiuchi|author1=Heintz, W. D.|author2=Strom, C.|journal=Astronomical Society of the Pacific|volume=105|number=685|page=293|date=1993|bibcode=1993PASP..105..293H|doi=10.1086/133145}}</ref>
| period=192
| period = 192
| axis=0.91
| axis = 0.91
| eccentricity=0.611
| eccentricity = 0.611
| periastron=B 1939.7
| periastron = B 1939.7
| inclination=23.0
| inclination = 23.0
| node=53.3
| node = 53.3
| periarg=157.5
| periarg = 157.5
}}
}}
{{Starbox detail
{{Starbox detail
| component1 = A
| mass=
| mass = {{Val|2.62|0.04}}<ref name=zorec2012/>
| radius=
| radius =
| luminosity=
| luminosity = {{Val|76.0|5.1|4.8}}<ref name=zorec2012/>
| temperature=
| temperature = {{Val|8831|101|102|fmt=commas}}<ref name=zorec2012/>
| metal=
| rotation=
| metal_fe =
| rotational_velocity=138<ref name=aaa463_2/>
| rotational_velocity = 138<ref name=zorec2012/>
| gravity=
| gravity =
| age= }}
| age_myr =
}}
{{Starbox catalog
{{Starbox catalog
| names=[[Bayer designation|λ]] Oph, [[Flamsteed designation|10]] Oph, [[Harvard Revised catalogue|HR]] 6149, [[Bonner Durchmusterung|BD]]+02° 3118, [[Henry Draper catalogue|HD]]&nbsp;148857, [[Smithsonian Astrophysical Observatory|SAO]] 121658, [[Hipparcos catalogue|HIP]] 80883, [[Washington Double Star Catalog|WDS]]&nbsp;16309+0159.<ref name=SIMBAD/> }}
| names = {{odlist | B=λ&nbsp;Oph | F=10 Oph | BD=+02°3118 | HD=148857 | HIP=80883 | HR=6149 | SAO=121658 | WDS=16309+0159 | NSV=7784 | ADS=10087 }}<ref name=SIMBAD/>
}}
{{Starbox reference
{{Starbox reference
|Simbad=lam+Oph
| Simbad = lam+Oph
}}
}}
{{Starbox end}}
{{Starbox end}}


'''Lambda Ophiuchi''' ('''λ Ophiuchi''', abbreviated '''Lambda Oph''', '''λ Oph''') is a [[triple star system]] in the [[constellation]] of [[Ophiuchus]]. It is approximately 170 [[light-year]]s from the [[Sun]], based on its [[stellar parallax|parallax]].<ref name=aaa323/>
'''λ Ophiuchi''', [[Romanization of Greek|Latinized]] as '''Lambda Ophiuchi''', is a [[triple star system]]<ref name=Eggleton2008/> in the [[celestial equator|equatorial]] [[constellation]] of [[Ophiuchus]].<ref name=SIMBAD/> It has the traditional name Marfik ({{IPAc-en|'|m|ɑr|f|I|k}}),<ref name=Kunitzsch/> which now applies exclusively to the primary component.<ref name="IAU-LSN"/> The system is visible to the naked eye as a faint point of light with an [[apparent visual magnitude]] of 3.82.<ref name=Anderson2012/> It is located approximately 173&nbsp;[[light-year]]s from the [[Sun]], based on its [[stellar parallax|parallax]],<ref name=vanLeeuwen2007/> but is drifting closer with a [[radial velocity]] of –16&nbsp;km/s.<ref name=Anderson2012/>


The inner pair form a [[binary star]]<ref name=aaa388/> system with an [[orbital period]] of 192&nbsp;years and an [[orbital eccentricity|eccentricity]] of 0.611.<ref name=orb/> Both components are [[A-type main-sequence star]]s, indicating that they are generating energy through [[stellar core|core]] [[hydrogen fusion]]. The brighter member of this pair, designated component A, is the primary for the system with a visual magnitude of 4.18<ref name=Eggleton2008/> and a [[stellar classification]] of A0V.<ref name=Edwards1976/> The secondary, component B, is magnitude 5.22<ref name=Eggleton2008/> and class A4V.<ref name=Edwards1976/> Component C is magnitude 11.0 and lies at an [[angular separation]] of {{Val|119|ul=arcsecond}} from the inner pair.<ref name=Eggleton2008/>
The system consists of a [[binary star|binary pair]],<ref name=aaa388/> designated '''Lambda Ophiuchi AB''', together with a third companion, '''C'''. AB's two components are themselves designated '''Lambda Ophiuchi A''' (officially named '''Marfik''' {{IPAc-en|'|m|ɑr|f|I|k}}, the traditional name for the system)<ref name=Kunitzsch>{{cite book
|last=Kunitzsch |first=Paul
|last2=Smart |first2=Tim
|date = 2006 |edition = 2nd rev.
|title = A Dictionary of Modern star Names: A Short Guide to 254 Star Names and Their Derivations
|publisher = Sky Pub |location = Cambridge, Massachusetts
|isbn = 978-1-931559-44-7
}}</ref><ref name="IAU-LSN">{{cite web | url=https://www.iau.org/public/themes/naming_stars/ | title=Naming Stars |publisher=IAU.org |accessdate=16 December 2017}}</ref>) and '''B'''.


==Nomenclature==
==Nomenclature==
''λ Ophiuchi'' ([[Latinisation of names|Latinised]] to ''Lambda Ophiuchi'') is the system's [[Bayer designation]]. The designations of the three components as ''Lambda Ophiuchi A'', ''B'' and ''C'' derive from the convention used by the Washington Multiplicity Catalog (WMC) for [[Star system|multiple star system]]s, and adopted by the [[International Astronomical Union]] (IAU).<ref name="planetnaming">{{cite arXiv |title=On the naming convention used for multiple star systems and extrasolar planets |date=2010 |eprint=1012.0707 |class=astro-ph.SR |last1= Hessman |first1=F. V. |last2= Dhillon |first2=V. S. |last3= Winget |first3=D. E. |last4= Schreiber |first4=M. R. |last5= Horne |first5=K. |last6= Marsh |first6=T. R. |last7= Guenther |first7=E. |last8= Schwope |first8=A. |last9= Heber |first9=U. }}</ref>


''λ Ophiuchi'' is the system's [[Bayer designation]]. The designations of the three components as ''Lambda Ophiuchi A'', ''B'' and ''C'' derive from the convention used by the Washington Multiplicity Catalog (WMC) for [[Star system|multiple star system]]s, and adopted by the [[International Astronomical Union]] (IAU).<ref name="planetnaming"/>
It bore the traditional name ''Marfik'' (or ''Marsik''), from the Arabic مرفق ''marfiq'' "elbow". In 2016, the [[International Astronomical Union]] organized a [[IAU Working Group on Star Names|Working Group on Star Names]] (WGSN)<ref name="WGSN">{{citation
| url=https://www.iau.org/science/scientific_bodies/working_groups/280/
| title=IAU Working Group on Star Names (WGSN)
| publisher=[[International Astronomical Union]]
| accessdate=22 May 2016 | postscript=. }}</ref> to catalogue and standardize proper names for stars. The WGSN decided to attribute proper names to individual stars rather than entire [[multiple star|multiple systems]].<ref name="TriRpt18">{{cite web | url=https://www.iau.org/static/science/scientific_bodies/working_groups/280/wg-starnames-triennial-report-2015-2018.pdf | page=5 | title=WG Triennial Report (2015–2018) – Star Names |accessdate=2018-07-14}}</ref> It approved the name ''Marfik'' for the component Lambda Ophiuchi A on 12 September 2016 and it is now so included in the List of IAU-approved Star Names.<ref name="IAU-LSN"/>


It bore the traditional name ''Marfik'' (or ''Marsik''), from the Arabic مرفق ''marfiq'' "elbow". In 2016, the [[International Astronomical Union]] organized a [[IAU Working Group on Star Names|Working Group on Star Names]] (WGSN)<ref name="WGSN"/> to catalogue and standardize proper names for stars. The WGSN decided to attribute proper names to individual stars rather than entire [[multiple star|multiple systems]].<ref name="TriRpt18"/> It approved the name ''Marfik'' for the component Lambda Ophiuchi A on 12 September 2016 and it is now so included in the List of IAU-approved Star Names.<ref name="IAU-LSN"/>
==Properties==
Lambda Ophiuchi has [[apparent magnitude]] +3.82. Its to [[stellar classification|spectral type]] is A1V+A. The two components [[orbit]] each other with a [[orbital period|period]] of 129 years.<ref name=orb/>


==References==
==References==
{{reflist|refs=
{{reflist|refs=


<ref name=SIMBAD>{{cite simbad
<ref name=aaa323>{{cite journal | last=Perryman | first=M. A. C. |display-authors=etal | title=The HIPPARCOS Catalogue | journal=Astronomy & Astrophysics | volume=323 | pages=L49–L52 |date=April 1997 | bibcode=1997A&A...323L..49P }}</ref>
| title=lam Oph | accessdate=2019-09-20 }}</ref>


<ref name=vanLeeuwen2007>{{cite journal
<ref name=SIMBAD>{{cite web | title=lam Oph – Variable Star | work=SIMBAD | publisher=[[Centre de Données astronomiques de Strasbourg]] | url=http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=lam+Oph&submit=SIMBAD+search | accessdate=8 June 2010 }}</ref>
| last1=Van Leeuwen | first1=F.
| title=Validation of the new Hipparcos reduction
| 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 }}</ref>


<ref name=Eggleton2008>{{cite journal
<ref name=rgcrv>{{Cite conference | last=Evans | first=D. S. | date=June 20–24, 1966 |editor1=Batten, Alan Henry|editor2=Heard, John Frederick | title=The Revision of the General Catalogue of Radial Velocities | booktitle=Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30 | location=University of Toronto | publisher=International Astronomical Union | bibcode=1967IAUS...30...57E }}</ref>
| title=A catalogue of multiplicity among bright stellar systems
| journal=Monthly Notices of the Royal Astronomical Society
| volume=389 | issue=2 | pages=869 | year=2008
| last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A.
| bibcode=2008MNRAS.389..869E | arxiv=0806.2878
| doi=10.1111/j.1365-2966.2008.13596.x }}</ref>


<ref name=Anderson2012>{{cite journal
<ref name=aaa463_2>{{cite journal |author1=Royer, F. |author2=Zorec, J. |author3=Gómez, A. E. | title=Rotational velocities of A-type stars. III. Velocity distributions | journal=Astronomy and Astrophysics | volume=463 | issue=2 | pages=671–682 |date=February 2007 | doi=10.1051/0004-6361:20065224 | bibcode=2007A&A...463..671R |arxiv = astro-ph/0610785 }}</ref>
| last1=Anderson | first1=E. | last2=Francis | first2=Ch.
| title=XHIP: An extended hipparcos compilation
| 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=Edwards1976>{{cite journal
| last1=Edwards | first1=T. W.
| title=MK classification for visual binary components
| journal=The Astronomical Journal
| volume=81 | pages=245 | date=1976
| bibcode=1976AJ.....81..245E | doi=10.1086/111879 }}</ref>

<ref name=zorec2012>{{cite journal
| last1=Zorec | first1=J. | last2=Royer | first2=F.
| last3=Asplund | first3=Martin | last4=Cassisi | first4=Santi
| last5=Ramirez | first5=Ivan | last6=Melendez | first6=Jorge
| last7=Bensby | first7=Thomas | last8=Feltzing | first8=Sofia
| title=Rotational velocities of A-type stars. IV. Evolution of rotational velocities
| display-authors=1 | journal=Astronomy and Astrophysics
| volume=537 | pages=A120 | year=2012
| bibcode=2012A&A...537A.120Z | arxiv=1201.2052
| doi=10.1051/0004-6361/201117691 }}</ref>

<ref name=orb>{{cite journal
| title=The visual binary Lambda Ophiuchi
| last1=Heintz | first1=W. D. | last2=Strom | first2=C.
| journal=Astronomical Society of the Pacific
| volume=105 | number=685 | page=293 | date=1993
| bibcode=1993PASP..105..293H | doi=10.1086/133145 }}</ref>

<ref name=Kunitzsch>{{cite book
| last=Kunitzsch | first=Paul
| last2=Smart | first2=Tim
| date=2006 | edition=2nd rev.
| title=A Dictionary of Modern star Names: A Short Guide to 254 Star Names and Their Derivations
| publisher=Sky Pub | location=Cambridge, Massachusetts
| isbn = 978-1-931559-44-7 }}</ref>

<ref name="WGSN">{{citation
| url=https://www.iau.org/science/scientific_bodies/working_groups/280/
| title=IAU Working Group on Star Names (WGSN)
| publisher=[[International Astronomical Union]]
| accessdate=22 May 2016 | postscript=. }}</ref>

<ref name="IAU-LSN">{{cite web
| url=https://www.iau.org/public/themes/naming_stars/
| title=Naming Stars | publisher=IAU.org
| accessdate=16 December 2017 }}</ref>

<ref name="planetnaming">{{cite arXiv
| title=On the naming convention used for multiple star systems and extrasolar planets
| date=2010 | eprint=1012.0707 | class=astro-ph.SR
| display-authors=1 | last1=Hessman | first1=F. V.
| last2=Dhillon | first2=V. S. | last3=Winget | first3=D. E.
| last4=Schreiber | first4=M. R. | last5=Horne | first5=K.
| last6=Marsh | first6=T. R. | last7=Guenther | first7=E.
| last8=Schwope | first8=A. | last9=Heber | first9=U. }}</ref>

<ref name="TriRpt18">{{cite web
| url=https://www.iau.org/static/science/scientific_bodies/working_groups/280/wg-starnames-triennial-report-2015-2018.pdf
| accessdate=2018-07-14 | page=5
| title=WG Triennial Report (2015–2018) – Star Names }}</ref>

<ref name=Samus2017>{{cite journal
| display-authors=1 | last1=Samus | first1=N. N.
| last2=Kazarovets | first2=E. V. | last3=Durlevich | first3=O. V.
| last4=Kireeva | first4=N. N. | last5=Pastukhova | first5=E. N.
| title=General Catalogue of Variable Stars
| version=5.1 | journal=Astronomy Reports
| year=2017 | volume=61 | issue=1 | pages=80–88
| bibcode=2017ARep...61...80S | doi=10.1134/S1063772917010085 }}</ref>


<ref name=aaa388>{{cite journal |author1=Lastennet, E. |author2=Fernandes, J. |author3=Lejeune, Th. | title=A revised HRD for individual components of binary systems from BaSeL BVRI synthetic photometry. Influence of interstellar extinction and stellar rotation | journal=Astronomy and Astrophysics | volume=388 | pages=309–319 |date=June 2002 | doi=10.1051/0004-6361:20020439 | bibcode=2002A&A...388..309L |arxiv = astro-ph/0203341 }}</ref>
<ref name=aaa388>{{cite journal |author1=Lastennet, E. |author2=Fernandes, J. |author3=Lejeune, Th. | title=A revised HRD for individual components of binary systems from BaSeL BVRI synthetic photometry. Influence of interstellar extinction and stellar rotation | journal=Astronomy and Astrophysics | volume=388 | pages=309–319 |date=June 2002 | doi=10.1051/0004-6361:20020439 | bibcode=2002A&A...388..309L |arxiv = astro-ph/0203341 }}</ref>
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{{Stars of Ophiuchus}}
{{Stars of Ophiuchus}}
<!-- Properties -->

[[Category:A-type main-sequence stars]]
[[Category:Suspected variables]]
[[Category:Binary stars]]
[[Category:Triple stars]]
<!-- Identifiers -->
[[Category:Ophiuchus (constellation)]]
[[Category:Ophiuchus (constellation)]]
[[Category:Bayer objects|Ophiuchi, Lambda]]
[[Category:Bayer objects|Ophiuchi, Lambda]]
[[Category:A-type main-sequence stars]]
[[Category:Durchmusterung objects]]
[[Category:Stars with proper names]]
[[Category:Flamsteed objects|Ophiuchi, 10]]
[[Category:Flamsteed objects|Ophiuchi, 10]]
[[Category:Hipparcos objects|080883]]
[[Category:Suspected variables]]
[[Category:Henry Draper Catalogue objects|148857]]
[[Category:Henry Draper Catalogue objects|148857]]
[[Category:Durchmusterung objects]]
[[Category:Hipparcos objects|080883]]
[[Category:HR objects|6149]]
[[Category:HR objects|6149]]
[[Category:Binary stars]]
[[Category:Stars with proper names]]


{{main-star-stub}}

Revision as of 15:43, 20 September 2019

Lambda Ophiuchi
Observation data
Epoch J2000      Equinox J2000
Constellation Ophiuchus
Right ascension 16h 30m 54.82314s[1]
Declination +01° 59′ 02.1209″[1]
Apparent magnitude (V) 3.82[2] 4.18 + 5.22 + 11.0)[3]
Characteristics
Spectral type A0V + A4V[4]
U−B color index +0.01[5]
B−V color index +0.022±0.014[2]
Variable type Suspected[6]
Astrometry
Radial velocity (Rv)−16.0±1.5[2] km/s
Proper motion (μ) RA: –30.98[1] mas/yr
Dec.: –73.42[1] mas/yr
Parallax (π)18.84 ± 0.55 mas[1]
Distance173 ± 5 ly
(53 ± 2 pc)
Absolute magnitude (MV)0.20[2]
Orbit[7]
Period (P)192 yr
Semi-major axis (a)0.91″
Eccentricity (e)0.611
Inclination (i)23.0°
Longitude of the node (Ω)53.3°
Periastron epoch (T)B 1939.7
Argument of periastron (ω)
(secondary)		157.5°
Details
A
Mass2.62±0.04[8] M☉
Luminosity76.0+5.1
−4.8[8] L☉
Temperature8,831+101
−102[8] K
Rotational velocity (v sin i)138[8] km/s
Other designations
λ Oph, 10 Oph, NSV 7784, BD+02°3118, HD 148857, HIP 80883, HR 6149, SAO 121658, ADS 10087, WDS 16309+0159[9]
Database references
SIMBADdata

λ Ophiuchi, Latinized as Lambda Ophiuchi, is a triple star system[3] in the equatorial constellation of Ophiuchus.[9] It has the traditional name Marfik (/ˈmɑːrfɪk/),[10] which now applies exclusively to the primary component.[11] The system is visible to the naked eye as a faint point of light with an apparent visual magnitude of 3.82.[2] It is located approximately 173 light-years from the Sun, based on its parallax,[1] but is drifting closer with a radial velocity of –16 km/s.[2]

The inner pair form a binary star[12] system with an orbital period of 192 years and an eccentricity of 0.611.[7] Both components are A-type main-sequence stars, indicating that they are generating energy through core hydrogen fusion. The brighter member of this pair, designated component A, is the primary for the system with a visual magnitude of 4.18[3] and a stellar classification of A0V.[4] The secondary, component B, is magnitude 5.22[3] and class A4V.[4] Component C is magnitude 11.0 and lies at an angular separation of 119″ from the inner pair.[3]

Nomenclature

λ Ophiuchi is the system's Bayer designation. The designations of the three components as Lambda Ophiuchi A, B and C derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU).[13]

It bore the traditional name Marfik (or Marsik), from the Arabic مرفق marfiq "elbow". In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN)[14] to catalogue and standardize proper names for stars. The WGSN decided to attribute proper names to individual stars rather than entire multiple systems.[15] It approved the name Marfik for the component Lambda Ophiuchi A on 12 September 2016 and it is now so included in the List of IAU-approved Star Names.[11]

References

  1. ^ a b c d e f 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.
  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.
  3. ^ a b c d e Eggleton, P. P.; Tokovinin, A. A. (2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x.
  4. ^ a b c Edwards, T. W. (1976). "MK classification for visual binary components". The Astronomical Journal. 81: 245. Bibcode:1976AJ.....81..245E. doi:10.1086/111879.
  5. ^ Johnson, H. L.; et al. (1966). "UBVRIJKL photometry of the bright stars". Communications of the Lunar and Planetary Laboratory. 4 (99). Bibcode:1966CoLPL...4...99J.
  6. ^ Samus, N. N.; et al. (2017). "General Catalogue of Variable Stars". Astronomy Reports. 5.1. 61 (1): 80–88. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085.
  7. ^ a b Heintz, W. D.; Strom, C. (1993). "The visual binary Lambda Ophiuchi". Astronomical Society of the Pacific. 105 (685): 293. Bibcode:1993PASP..105..293H. doi:10.1086/133145.
  8. ^ a b c d Zorec, J.; et al. (2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics. 537: A120. arXiv:1201.2052. Bibcode:2012A&A...537A.120Z. doi:10.1051/0004-6361/201117691.
  9. ^ a b "lam Oph". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-09-20.
  10. ^ Kunitzsch, Paul; Smart, Tim (2006). A Dictionary of Modern star Names: A Short Guide to 254 Star Names and Their Derivations (2nd rev. ed.). Cambridge, Massachusetts: Sky Pub. ISBN 978-1-931559-44-7.
  11. ^ a b "Naming Stars". IAU.org. Retrieved 16 December 2017.
  12. ^ Lastennet, E.; Fernandes, J.; Lejeune, Th. (June 2002). "A revised HRD for individual components of binary systems from BaSeL BVRI synthetic photometry. Influence of interstellar extinction and stellar rotation". Astronomy and Astrophysics. 388: 309–319. arXiv:astro-ph/0203341. Bibcode:2002A&A...388..309L. doi:10.1051/0004-6361:20020439.
  13. ^ Hessman, F. V.; et al. (2010). "On the naming convention used for multiple star systems and extrasolar planets". arXiv:1012.0707 [astro-ph.SR].
  14. ^ IAU Working Group on Star Names (WGSN), International Astronomical Union, retrieved 22 May 2016.
  15. ^ "WG Triennial Report (2015–2018) – Star Names" (PDF). p. 5. Retrieved 2018-07-14.

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=Lambda_Ophiuchi&oldid=916775978"