{{short description|Star in the constellation of Lupus}} {{Starbox begin}} {{Starbox observe | epoch = J2000 | constell = [[Lupus (constellation)|Lupus]] | ra = {{RA|15|59|30.26689}}<ref name=GaiaDR2/> | dec = {{DEC|−41|44|39.9869}}<ref name=GaiaDR2/> | appmag_v = 4.99<ref name=Anderson2012/> }} {{Starbox character | type = | class = K0 II-III<ref name=houk1978/> | b-v = {{Val|0.988|0.002}}<ref name=Anderson2012/> | variable = }} {{Starbox astrometry | radial_v = {{Val|−27.0|2.8}}<ref name=Anderson2012/> | prop_mo_ra = −37.658<ref name=GaiaDR2/> | prop_mo_dec = −16.707<ref name=GaiaDR2/> | parallax = 8.5885 | p_error = 0.3110 | parallax_footnote = <ref name=GaiaDR2/> | absmag_v = −0.64<ref name=Anderson2012/> }} {{Starbox detail | source = | mass = | radius = {{Val|16.83|0.16|0.27}}<ref name=GaiaDR2/> | luminosity = {{Val|152.3|6.2|6.3}}<ref name=GaiaDR2/> | gravity = 2.26<ref name=Luck2014/> | temperature = {{Val|4942|40|23|fmt=commas}}<ref name=GaiaDR2/> | metal_fe = 0.07<ref name=Luck2014/> | rotational_velocity = | age_myr = }} {{Starbox catalog | names={{odlist | B=e Lup | CD=−41° 10478 | FK5=1418 | HD=143009 | HIP=78323 | HR=5943 | SAO=226425 }}<ref name=SIMBAD/> }} {{Starbox reference | Simbad = HD+143009 }} {{Starbox end}}
'''HD 143009''' is a single<ref name=Eggleton2008/> [[star]] in the southern [[constellation]] of [[Lupus (constellation)|Lupus]]. It has an orange hue and is visible to the naked eye with an [[apparent visual magnitude]] of 4.99.<ref name=Anderson2012/> The star lies at a distance of approximately 380 [[light year]]s from the [[Sun]] based on [[stellar parallax|parallax]],<ref name=GaiaDR2/> but is drifting closer with a [[radial velocity]] of −27 km/s.<ref name=Anderson2012/> It has an [[absolute magnitude]] of −0.64.<ref name=Anderson2012/>
This is an [[stellar evolution|evolved]] [[K-type star]] with a [[stellar classification]] of K0 II-III,<ref name=houk1978/> displaying a [[luminosity class]] with mixed traits of a [[bright giant]] (II) and a [[giant star]] (III). With the supply of hydrogen at its [[stellar core|core]] exhausted, the star has expanded to 16.8 times the [[radius of the Sun]]. It is radiating 152 times the [[Sun's luminosity]] from its enlarged [[photosphere]] at an [[effective temperature]] of 4,942 K.<ref name=GaiaDR2/>
==References== <references>
<ref name=SIMBAD>{{cite simbad | title=HD 143009 | access-date=2018-07-28 }}</ref>
<ref name=GaiaDR2>{{cite DR2|5995194597664539776}}</ref>
<ref name=Luck2014>{{citation | last1=Earle Luck | first1=R. | postscript=. | title=Parameters and Abundances in Luminous Stars | journal=The Astronomical Journal | volume=147 | issue=6 | pages=137 | year=2014 | bibcode=2014AJ....147..137L | doi=10.1088/0004-6256/147/6/137 | doi-access=free }}</ref>
<ref name=houk1978>{{citation | last1=Houk | first1=Nancy | title=Michigan catalogue of two-dimensional spectral types for the HD stars | volume=2 | publication-place=Ann Arbor | publisher=Dept. of Astronomy, University of Michigan | year=1978 | bibcode=1978mcts.book.....H | postscript=. }}</ref>
<ref name=Eggleton2008>{{citation | title=A catalogue of multiplicity among bright stellar systems | last1=Eggleton | first1=P. P. | last2=Tokovinin | first2=A. A. | journal=Monthly Notices of the Royal Astronomical Society | volume=389 | issue=2 | pages=869 | date=2008 | doi=10.1111/j.1365-2966.2008.13596.x | doi-access=free | arxiv=0806.2878 | bibcode=2008MNRAS.389..869E | s2cid=14878976 | postscript=. }}</ref>
<ref name=Anderson2012>{{citation | 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 | doi=10.1134/S1063773712050015 | arxiv=1108.4971 | s2cid=119257644 | postscript=. }}</ref>
</references>
{{Stars of Lupus}}
[[Category:K-type bright giants]] [[Category:Lupus (constellation)]] [[Category:Durchmusterung objects]] [[Category:Henry Draper Catalogue objects|143009]] [[Category:Hipparcos objects|078323]] [[Category:Bright Star Catalogue objects|5943]]