{{Short description|Red giant star in the constellation Corvus}} {{Starbox begin | name = ε Corvi }} {{Starbox image | image= {{Location mark |image=Corvus constellation map.svg |float=center |alt= |label= |position=right |width=260 |mark=Red circle.svg |mark_width=10 |mark_link=ε Corvi |x=586|y=464 }} |caption=Location of ε Corvi (circled) }} {{Starbox observe | epoch = J2000 | ra = {{RA|12|10|07.48058}}<ref name=aaa474_2_653/> | dec = {{DEC|−22|37|11.1620}}<ref name=aaa474_2_653/> | appmag_v = +3.024<ref name=aaass22_9/> | constell = Corvus }} {{Starbox character | class = K2 III<ref name=houk1979/> | b-v = +1.318<ref name=aaass22_9/> | u-b = +1.458<ref name=aaass22_9/> | variable = }} {{Starbox astrometry | radial_v = +4.9<ref name=scfs/> | prop_mo_ra = −71.74 | prop_mo_dec = +10.25 | pm_footnote = <ref name=aaa474_2_653/> | parallax = 10.26 | p_error = 0.16 | parallax_footnote = <ref name=aaa474_2_653/> | absmag_v = {{val|-1.82|+0.15|-0.14}}<ref name=aj135_3_892/> }} {{Starbox detail | source = <ref name=Reffert2015/> | mass = {{val|2.97|0.43}} | radius = {{val|56.65|2.24}} | luminosity = {{val|930|54}} | gravity = {{val|1.42|0.10}} | temperature = {{val|4239|57|fmt=commas}} | metal_fe = {{val|-0.18|0.10}} | rotational_velocity = 1.0<ref name=aaa439_1_227/> | rotation = | age_myr = {{val|590|210}} }} {{Starbox catalog | names = 2 Crv, BD−21°3487, FK5 453, HD 105707, HIP 59316, HR 4630, SAO 180531<ref name=SIMBAD/> }} {{Starbox reference | Simbad = eps+Crv }} {{Starbox end}} '''Epsilon Corvi''' (ε Crv, ε Corvi) is a star in the southern constellation of Corvus. It has the traditional name '''Minkar''' {{IPAc-en|'|m|I|N|k|ɑr}}, from Arabic '''منقار''' ''minqar'' meaning "beak [of the crow]"<ref>[https://www.wdl.org/en/item/18412/view/1/321/ Al-Sufi, Book Of Fixed Stars, Constellation: The Crow]</ref> The apparent visual magnitude is +3.0<ref name=aaass22_9/> and it is located at a distance of {{Convert|318|ly|pc|abbr=off|lk=on}} from Earth.<ref name=aaa474_2_653/>
In Chinese, {{lang|zh|軫宿}} ({{lang|zh-Latn|Zhěn Sù}}), meaning ''Chariot (asterism)'', refers to an asterism consisting of ε Corvi, γ Corvi, δ Corvi and β Corvi.<ref>{{in lang|zh}} ''中國星座神話'', written by 陳久金. Published by 台灣書房出版有限公司, 2005, {{ISBN|978-986-7332-25-7}}.</ref> Consequently, ε Corvi itself is known as {{lang|zh|軫宿二}} ({{lang|zh-Latn|Zhěn Sù èr}}, {{langx|en|the Second Star of Chariot}}.).<ref>{{in lang|zh}} [http://www.lcsd.gov.hk/CE/Museum/Space/Research/StarName/c_research_chinengstars_m.htm 香港太空館 - 研究資源 - 亮星中英對照表] {{webarchive |url=https://web.archive.org/web/20110130063012/http://www.lcsd.gov.hk/CE/Museum/Space/Research/StarName/c_research_chinengstars_m.htm |date=January 30, 2011 }}, Hong Kong Space Museum. Accessed on line November 23, 2010.</ref>
Epsilon Corvi is a red giant with a stellar classification of K2 III, having consumed the hydrogen at its core and evolved away from the main sequence. It has about three times the Sun's mass, while having expanded to 57 times the Sun's radius. The photosphere irradiates 930 times more energy than the Sun and has an effective temperature of {{val|4239|u=K}},<ref name=Reffert2015/> giving it an orange hue that is characteristic of a K-type star.<ref name=csiro/> It spent much of its life as a main sequence star of spectral type B5V.<ref name=kalereps>{{citation | last1=Kaler | first1=James B. (Jim)| url=http://stars.astro.illinois.edu/sow/minkar.html | title=Minkar | work=Stars | publisher=University of Illinois | access-date=12 July 2015}}</ref>
== References == {{reflist|30em|refs=
<ref name=aaa474_2_653>{{citation | first=F. | last=van Leeuwen |date=November 2007 | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 |arxiv = 0708.1752 | s2cid=18759600 }}</ref>
<ref name=Reffert2015>{{Citation |last=Reffert |first=Sabine |last2=Bergmann |first2=Christoph |last3=Quirrenbach |first3=Andreas |last4=Trifonov |first4=Trifon |last5=Künstler |first5=Andreas |date=2015-02-01 |title=Precise radial velocities of giant stars. VII. Occurrence rate of giant extrasolar planets as a function of mass and metallicity |journal=Astronomy and Astrophysics |volume=574 |pages=A116 |doi=10.1051/0004-6361/201322360 |bibcode=2015A&A...574A.116R |issn=0004-6361|arxiv=1412.4634 }} [https://vizier.cds.unistra.fr/viz-bin/VizieR?-source=J/A%2BA/574/A116&HIP=59316 Epsilon Corvi's database entry] at VizieR.</ref>
<ref name=houk1979>{{citation | title=Michigan catalogue of two-dimensional spectral types for the HD stars | volume=4 | last1=Houk | first1=Nancy | location=Ann Arbor, Michigan | publisher=Dept. of Astronomy, University of Michigan | date=1979 | bibcode=1988mcts.book.....H }}</ref>
<ref name=scfs>{{citation | display-authors=1 | title=Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions | last1=Wielen | first1=R. | last2=Schwan | first2=H. | last3=Dettbarn | first3=C. | last4=Lenhardt | first4=H. | last5=Jahreiß | first5=H. | last6=Jährling | first6=R. | journal=Veroeffentlichungen des Astronomischen Rechen-Instituts Heidelberg | publisher=Astronomisches Rechen-Institut Heidelberg | issue=35 | date=1999 | volume=35 | page=1 | bibcode=1999VeARI..35....1W }}</ref>
<ref name=aaass22_9>{{citation | last1=Celis S. | first1=L. | title=Photoelectric photometry of late-type variable stars | journal=Astronomy and Astrophysics Supplement Series | volume=22 | pages=9–17 |date=October 1975 |bibcode = 1975A&AS...22....9C }}</ref>
<ref name=aaa439_1_227>{{citation | display-authors=1 | last1=Melo | first1=C. H. F. | last2=de Laverny | first2=P. | last3=Santos | first3=N. C. | last4=Israelian | first4=G. | last5=Randich | first5=S. | last6=Do Nascimento | first6=J. D. Jr. | last7=de Medeiros | first7=J. R. | title=On the nature of lithium-rich giant stars. Constraints from beryllium abundances | journal=Astronomy and Astrophysics | volume=439 | issue=1 | pages=227–235 |date=August 2005 | doi=10.1051/0004-6361:20041805 | bibcode=2005A&A...439..227M |arxiv = astro-ph/0504133 | s2cid=10580797 }}</ref>
<ref name=SIMBAD>{{citation | title=MINKAR -- Variable Star | work=SIMBAD | publisher=Centre de Données astronomiques de Strasbourg | url=http://simbad.u-strasbg.fr/simbad/sim-id?Ident=Minkar | access-date=2012-01-23 }}</ref>
<ref name=csiro>{{citation |title=The Colour of Stars |date=December 21, 2004 |work=Australia Telescope, Outreach and Education |publisher=Commonwealth Scientific and Industrial Research Organisation |url=http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html |access-date=2012-01-16 |url-status=dead |archive-url=https://web.archive.org/web/20120318151427/http://outreach.atnf.csiro.au/education/senior/astrophysics/photometry_colour.html |archive-date=2012-03-18 }}</ref>
<ref name=aj135_3_892>{{citation | display-authors=1 | last1=Carney | first1=Bruce W. | last2=Gray | first2=David F. | last3=Yong | first3=David | last4=Latham | first4=David W. | last5=Manset | first5=Nadine | last6=Zelman | first6=Rachel | last7=Laird | first7=John B. | title=Rotation and Macroturbulence in Metal-Poor Field Red Giant and Red Horizontal Branch Stars | journal=The Astronomical Journal | volume=135 | issue=3 | pages=892–906 |date=March 2008 | doi=10.1088/0004-6256/135/3/892 | bibcode=2008AJ....135..892C |arxiv = 0711.4984 | s2cid=2756572 }}</ref>
}}
{{Stars of Corvus}}
Category:Corvus (constellation) Corvi, Epsilon Minkar Corvi, 02 059316 Category:K-type giants 4630 105707 Category:Durchmusterung objects