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{{Short description|Star in the constellation Lynx}} |
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{{Starbox begin |
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{{Starbox begin}} |
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| name = [[Flamsteed designation|6 Lyncis]] |
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}} |
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{{Starbox observe |
{{Starbox observe |
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| epoch = J2000.0 |
| epoch = J2000.0 |
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| constell = [[Lynx (constellation)|Lynx]] |
| constell = [[Lynx (constellation)|Lynx]] |
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| ra = {{RA|06|30|47.1071}}<ref name="Gaia DR2"/> |
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| ra = {{RA|06|30|47.11}} <ref name="hipparcos"> {{cite web | url=http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=30963 | title=HIP 31039 | work=Hipparcos, the New Reduction | author=van Leeuwen, F. | year=2007 | accessdate=2010-03-07}}</ref> |
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| dec = {{DEC|+58|09|45. |
| dec = {{DEC|+58|09|45.481}}<ref name="Gaia DR2"/> |
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| appmag_v = 5. |
| appmag_v = 5.86<ref name=Anderson2012/> |
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}} |
}} |
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{{Starbox character |
{{Starbox character |
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| class = {{nowrap|K0.5 IIIb Fe0.5}}<ref name=perkins1989/> |
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| class = K0IV |
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| b-v = {{Val|0.934|0.006}}<ref name=Anderson2012/> |
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| r-i = |
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| v-r = |
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| b-v = 0.94 |
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| u-b = |
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| variable = ''None'' |
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}} |
}} |
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{{Starbox astrometry |
{{Starbox astrometry |
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| radial_v = + |
| radial_v = {{Val|+39.57|0.20}}<ref name=Anderson2012/> |
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| prop_mo_ra = |
| prop_mo_ra = {{val|−30.421|0.098}}<ref name="Gaia DR2"/> |
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| prop_mo_dec = |
| prop_mo_dec = {{val|−338.678|0.071}}<ref name="Gaia DR2"/> |
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| parallax = |
| parallax = 18.2668 |
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| p_error = 0. |
| p_error = 0.0908 |
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| parallax_footnote = <ref name=" |
| parallax_footnote = <ref name="Gaia DR2"/> |
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| absmag_v = 2. |
| absmag_v = 2.13<ref name=Anderson2012/> |
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}} |
}} |
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{{Starbox detail |
{{Starbox detail |
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| source = <ref name="Bonfanti2015"/> |
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| age = |
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| |
| mass = {{Val|1.46|0.02}} |
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| |
| radius = {{Val|5.2|0.1}} |
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| |
| luminosity = {{Val|14.9|0.1}} |
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| gravity = 3. |
| gravity = {{Val|3.17|0.03}} |
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| temperature = {{Val|4994|15|fmt=commas}} |
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| rotation = |
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| metal_fe = {{Val|−0.18|0.04}}<ref name=Anderson2012/> |
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| luminosity = 15 |
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| rotational_velocity = 1.8<ref name=Massarotti2008/> |
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| temperature = 4978 ± 18 |
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| age_gyr = {{Val|2.8|0.2}} |
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}} |
}} |
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{{Starbox catalog |
{{Starbox catalog |
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| names = {{odlist | F=6 Lyn | BD=+58°932 | HD=45410 | HIP=31039 | HR=2331 | SAO=25771 | GC=8416 }}<ref name="Simbad"/> |
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| names = [[Bonner Durchmusterung|BD]]+58°932, [[Boss General Catalogue|GC]] 8416, [[Henry Draper catalogue|HD]] 45410, [[Hipparcos catalogue|HIP]] 31039, [[Harvard Revised catalogue|HR]] 2331, [[Smithsonian Astrophysical Observatory catalogue|SAO]] 25771 |
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}} |
}} |
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{{Starbox reference |
{{Starbox reference |
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| Simbad = 6+Lyn |
| Simbad = 6+Lyn |
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| NSTED = 6+Lyn |
| NSTED = 6+Lyn |
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| EPE = 6+Lyn |
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}} |
}} |
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{{Starbox end}} |
{{Starbox end}} |
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'''6 Lyncis''' is a [[star]] in the northern [[constellation]] of [[Lynx (constellation)|Lynx]],<ref name="Simbad"/> located approximately 179 [[light year]]s from Earth.<ref name="Gaia DR2"/> It is visible to the naked eye as a dim, orange-hued star with an [[apparent visual magnitude]] of 5.86.<ref name=Anderson2012/> This object is moving away from the Earth with a heliocentric [[radial velocity]] of +40 km/s.<ref name=Anderson2012/> It has a relatively high [[proper motion]], traversing the [[celestial sphere]] at the rate of 0.341 [[arc second]]s per annum.<ref name=Lepine2005/> |
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'''6 Lyncis''' (abbreviated '''6 Lyn''') is a [[Stellar classification#Class K|K-type]] [[subgiant star|subgiant]] [[star]] approximately 182 [[light year]]s away in the [[constellation]] of [[Lynx (constellation)|Lynx]]. The star has mass 1.7 times, radius 5.2 times, and luminosity 15 times that of our [[Sun]]. It has [[apparent magnitude]] 5.88 and [[absolute magnitude]] 2.10. |
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This is an aging [[giant star]] with a [[stellar classification]] of {{nowrap|K0.5 IIIb Fe0.5}},<ref name=perkins1989/> which indicates it has a mild overabundance of iron in its [[stellar spectrum|spectrum]]. At the age of 2.8 billion years old, it has exhausted the hydrogen at its core, causing it to [[stellar evolution|evolve]] away from the [[main sequence]]. As a consequence, it has expanded to 5.2 times the [[radius of the Sun]] although it only has 1.46 times the [[Sun's mass]]. The star is radiating 14.9 times the [[luminosity of the Sun]] from its swollen [[photosphere]] at an [[effective temperature]] of 4,994 K.<ref name="Bonfanti2015"/> One sub-stellar companion has been identified.<ref name="Sato2008"/> |
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== Planetary system == |
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In July 2008, the planet [[6 Lyncis b]] was announced by Sato, along with [[14 Andromedae b]] and [[81 Ceti b]]. The planet was found to have [[minimum mass]] of 2.4 Jupiter masses and period of 899 days.<ref name="Sato">{{cite journal | url=http://pasj.asj.or.jp/v60/n6/600610/600610.pdf | author=Sato ''et al.'' | title=Planetary Companions to Evolved Intermediate-Mass Stars: 14 Andromedae, 81 Ceti, 6 Lyncis, and HD167042 | journal=Publications of the Astronomical Society of Japan | volume=60 | issue=6 | pages=1317–1326 | year=2008 | format=PDF|bibcode = 2008PASJ...60.1317S | last2=Toyota | first2=Eri | last3=Omiya | first3=Masashi | last4=Izumiura | first4=Hideyuki | last5=Kambe | first5=Eiji | last6=Masuda | first6=Seiji | last7=Takeda | first7=Yoichi | last8=Itoh | first8=Yoichi | last9=Ando | first9=Hiroyasu |arxiv = 0807.0268 }}([http://arxiv.org/abs/0807.0268 web Preprint])</ref> |
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==Planetary system== |
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In July 2008, the planet [[6 Lyncis b]] was announced by Bun'ei Sato and collaborators from the [[Okayama Planet Search Program]], along with [[14 Andromedae b]] and [[81 Ceti b]]. The planet was found to have [[minimum mass]] of 2.4 Jupiter masses and period of 899 days.<ref name="Sato2008"/> |
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{{OrbitboxPlanet begin |
{{OrbitboxPlanet begin |
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| table_ref = <ref name=" |
| table_ref = <ref name="Luhn2019"/> |
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}} |
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{{OrbitboxPlanet |
{{OrbitboxPlanet |
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| exoplanet = [[6 Lyncis b|b]] |
| exoplanet = [[6 Lyncis b|b]] |
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| mass = |
| mass = {{val|2.010|0.077|p=≥}} |
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| semimajor = {{val|2.11|0.11}} |
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| period = 899 ± 19 |
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| period = {{Val|934.3|8.6}} |
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| semimajor = 2.2 |
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| eccentricity = 0. |
| eccentricity = {{Val|0.073|0.036}} |
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}} |
}} |
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{{Orbitbox end}} |
{{Orbitbox end}} |
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== |
==See also== |
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* [[14 Andromedae]] |
* [[14 Andromedae]] |
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* [[81 Ceti]] |
* [[81 Ceti]] |
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* [[HD 167042]] |
* [[HD 167042]] |
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* [[ |
* [[Lists of exoplanets]] |
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== |
==References== |
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{{Reflist|refs= |
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{{reflist}} |
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<ref name="Bonfanti2015">{{cite journal |
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== External links == |
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| title=Revising the ages of planet-hosting stars |
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* {{cite web |url=http://exoplanet.eu/star.php?st=6+Lyn |title=Notes for star 6 Lyn |author=Jean Schneider |year=2011 |work= |publisher=[[Extrasolar Planets Encyclopaedia]] |accessdate=8 October 2011}} |
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| last1=Bonfanti | first1=A. | last2=Ortolani | first2=S. |
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| last3=Piotto | first3=G. | last4=Nascimbeni | first4=V. |
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| display-authors=1 | journal=Astronomy and Astrophysics |
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| year=2015 | volume=575 | at=A18 | arxiv=1411.4302 |
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| bibcode=2015A&A...575A..18B | doi=10.1051/0004-6361/201424951 | s2cid=54555839 }}</ref> |
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<ref name="Gaia DR2">{{Cite Gaia DR2|1004358968092652544}}</ref> |
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{{Sky|06|30|47.1081|+|58|09|45.480|186}} |
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{{Stars of Lynx}} |
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[[Category:Flamsteed objects|Lyncis, 6]] |
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[[Category:Henry Draper Catalogue objects|045410]] |
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[[Category:HIP objects|031039]] |
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[[Category:HR objects|2331]] |
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[[Category:K-type subgiants]] |
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[[Category:Lynx (constellation)]] |
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[[Category:Planetary systems]] |
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<ref name=perkins1989>{{cite journal |
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| last1=Keenan | first1=Philip C. | last2=McNeil | first2=Raymond C. |
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| title=The Perkins catalog of revised MK types for the cooler stars |
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| journal=Astrophysical Journal Supplement Series |
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| volume=71 | pages=245 | year=1989 |
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| bibcode=1989ApJS...71..245K | doi=10.1086/191373 }}</ref> |
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<ref name="Sato2008">{{cite journal |
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{{subgiant-star-stub}} |
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| title=Planetary Companions to Evolved Intermediate-Mass Stars: 14 Andromedae, 81 Ceti, 6 Lyncis, and HD167042 |
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| url=https://academic.oup.com/pasj/article/60/6/1317/1391840 |
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| last1=Sato | first1=Bun'ei | last2=Toyota | first2=Eri |
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| last3=Omiya | first3=Masashi | last4=Izumiura | first4=Hideyuki |
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| last5=Kambe | first5=Eiji | last6=Masuda | first6=Seiji |
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| last7=Takeda | first7=Yoichi | last8=Itoh | first8=Yoichi |
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| last9=Ando | first9=Hiroyasu | display-authors=1 |
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| journal=Publications of the Astronomical Society of Japan |
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| volume=60 | issue=6 | pages=1317–1326 | year=2008 |
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| arxiv=0807.0268 | bibcode=2008PASJ...60.1317S |
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| doi=10.1093/pasj/60.6.1317 | s2cid=67841762 |
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}}</ref> |
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<ref name="Simbad">{{cite simbad | title=6 Lyn | access-date=2018-05-27 }}</ref> |
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[[es:6 Lyncis]] |
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[[fa:۶ سیاهگوش]] |
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<ref name=Anderson2012>{{cite journal |
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[[ja:やまねこ座6番星]] |
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| title=XHIP: An extended hipparcos compilation |
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[[ru:6 Рыси]] |
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| last1=Anderson | first1=E. | last2=Francis | first2=Ch. |
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[[zh:八穀增廿八]] |
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| journal=Astronomy Letters |
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| volume=38 | issue=5 | pages=331 | year=2012 |
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| bibcode=2012AstL...38..331A | arxiv=1108.4971 |
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| doi=10.1134/S1063773712050015 | s2cid=119257644 }}</ref> |
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<ref name=Massarotti2008>{{cite journal |
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| last1=Massarotti | first1=Alessandro | last2=Latham | first2=David W. |
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| last3=Stefanik | first3=Robert P. | last4=Fogel | first4=Jeffrey |
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| title=Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity |
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| display-authors=1 | journal=The Astronomical Journal |
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| volume=135 | issue=1 | pages=209–231 | date=January 2008 |
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| doi=10.1088/0004-6256/135/1/209 | bibcode=2008AJ....135..209M | doi-access=free }}</ref> |
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<ref name=Lepine2005>{{cite journal |
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| last1=Lépine | first1=Sébastien | last2=Shara | first2=Michael M. |
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| title=A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog) |
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| journal=The Astronomical Journal |
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| volume=129 | issue=3 | pages=1483–1522 | date=March 2005 |
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| doi=10.1086/427854 | bibcode=2005AJ....129.1483L |
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| arxiv=astro-ph/0412070 | s2cid=2603568 }}</ref> |
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<ref name="Luhn2019">{{cite journal | title=Retired A Stars and Their Companions. VIII. 15 New Planetary Signals around Subgiants and Transit Parameters for California Planet Search Planets with Subgiant Hosts | last1=Luhn | first1=Jacob K. | last2=Bastien | first2=Fabienne A. | last3=Wright | first3=Jason T. | last4=Johnson | first4=John A. | last5=Howard | first5=Andrew W. | last6=Isaacson | first6=Howard | display-authors=1 | journal=The Astronomical Journal | volume=157 | issue=4 | at=149 | year=2019 | arxiv=1811.03043 | bibcode=2019AJ....157..149L | doi=10.3847/1538-3881/aaf5d0 | s2cid=102486961 | doi-access=free }}</ref> |
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}} |
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==External links== |
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* {{cite web |url=http://exoplanet.eu/star.php?st=6+Lyn |archive-url=https://web.archive.org/web/20080803203049/http://exoplanet.eu/star.php?st=6+Lyn |url-status=dead |archive-date=August 3, 2008 |title=Notes for star 6 Lyn |author=Jean Schneider |year=2011 |work=[[Extrasolar Planets Encyclopaedia]] |access-date=8 October 2011}} |
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{{Sky|06|30|47.1081|+|58|09|45.480|186}} |
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{{Stars of Lynx}} |
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{{DEFAULTSORT:6 Lyncis}} |
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[[Category:K-type giants]] |
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[[Category:Planetary systems with one confirmed planet]] |
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[[Category:Lynx (constellation)]] |
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[[Category:Durchmusterung objects]] |
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[[Category:Flamsteed objects|Lyncis, 06]] |
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[[Category:Henry Draper Catalogue objects|045410]] |
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[[Category:Hipparcos objects|031039]] |
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[[Category:Bright Star Catalogue objects|2331]] |
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Latest revision as of 02:19, 22 December 2023
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Lynx |
| Right ascension | 06h 30m 47.1071s[1] |
| Declination | +58° 09′ 45.481″[1] |
| Apparent magnitude (V) | 5.86[2] |
| Characteristics | |
| Spectral type | K0.5 IIIb Fe0.5[3] |
| B−V color index | 0.934±0.006[2] |
| Astrometry | |
| Radial velocity (Rv) | +39.57±0.20[2] km/s |
| Proper motion (μ) | RA: −30.421±0.098[1] mas/yr Dec.: −338.678±0.071[1] mas/yr |
| Parallax (π) | 18.2668 ± 0.0908 mas[1] |
| Distance | 178.6 ± 0.9 ly (54.7 ± 0.3 pc) |
| Absolute magnitude (MV) | 2.13[2] |
| Details[4] | |
| Mass | 1.46±0.02 M☉ |
| Radius | 5.2±0.1 R☉ |
| Luminosity | 14.9±0.1 L☉ |
| Surface gravity (log g) | 3.17±0.03 cgs |
| Temperature | 4,994±15 K |
| Metallicity [Fe/H] | −0.18±0.04[2] dex |
| Rotational velocity (v sin i) | 1.8[5] km/s |
| Age | 2.8±0.2 Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
6 Lyncis is a star in the northern constellation of Lynx,[6] located approximately 179 light years from Earth.[1] It is visible to the naked eye as a dim, orange-hued star with an apparent visual magnitude of 5.86.[2] This object is moving away from the Earth with a heliocentric radial velocity of +40 km/s.[2] It has a relatively high proper motion, traversing the celestial sphere at the rate of 0.341 arc seconds per annum.[7]
This is an aging giant star with a stellar classification of K0.5 IIIb Fe0.5,[3] which indicates it has a mild overabundance of iron in its spectrum. At the age of 2.8 billion years old, it has exhausted the hydrogen at its core, causing it to evolve away from the main sequence. As a consequence, it has expanded to 5.2 times the radius of the Sun although it only has 1.46 times the Sun's mass. The star is radiating 14.9 times the luminosity of the Sun from its swollen photosphere at an effective temperature of 4,994 K.[4] One sub-stellar companion has been identified.[8]
Planetary system
[edit]In July 2008, the planet 6 Lyncis b was announced by Bun'ei Sato and collaborators from the Okayama Planet Search Program, along with 14 Andromedae b and 81 Ceti b. The planet was found to have minimum mass of 2.4 Jupiter masses and period of 899 days.[8]
| Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | ≥2.010±0.077 MJ | 2.11±0.11 | 934.3±8.6 | 0.073±0.036 | — | — |
See also
[edit]References
[edit]- ^ a b c d e f 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 g 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. S2CID 119257644.
- ^ a b Keenan, Philip C.; McNeil, Raymond C. (1989). "The Perkins catalog of revised MK types for the cooler stars". Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS...71..245K. doi:10.1086/191373.
- ^ a b Bonfanti, A.; et al. (2015). "Revising the ages of planet-hosting stars". Astronomy and Astrophysics. 575. A18. arXiv:1411.4302. Bibcode:2015A&A...575A..18B. doi:10.1051/0004-6361/201424951. S2CID 54555839.
- ^ Massarotti, Alessandro; et al. (January 2008). "Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity". The Astronomical Journal. 135 (1): 209–231. Bibcode:2008AJ....135..209M. doi:10.1088/0004-6256/135/1/209.
- ^ a b "6 Lyn". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-05-27.
- ^ Lépine, Sébastien; Shara, Michael M. (March 2005). "A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog)". The Astronomical Journal. 129 (3): 1483–1522. arXiv:astro-ph/0412070. Bibcode:2005AJ....129.1483L. doi:10.1086/427854. S2CID 2603568.
- ^ a b Sato, Bun'ei; et al. (2008). "Planetary Companions to Evolved Intermediate-Mass Stars: 14 Andromedae, 81 Ceti, 6 Lyncis, and HD167042". Publications of the Astronomical Society of Japan. 60 (6): 1317–1326. arXiv:0807.0268. Bibcode:2008PASJ...60.1317S. doi:10.1093/pasj/60.6.1317. S2CID 67841762.
- ^ Luhn, Jacob K.; et al. (2019). "Retired A Stars and Their Companions. VIII. 15 New Planetary Signals around Subgiants and Transit Parameters for California Planet Search Planets with Subgiant Hosts". The Astronomical Journal. 157 (4). 149. arXiv:1811.03043. Bibcode:2019AJ....157..149L. doi:10.3847/1538-3881/aaf5d0. S2CID 102486961.
External links
[edit]- Jean Schneider (2011). "Notes for star 6 Lyn". Extrasolar Planets Encyclopaedia. Archived from the original on August 3, 2008. Retrieved 8 October 2011.
