View source for Astronomy:HD 120565

{{Short description|Spectroscopic binary in the constellation Camelopardalis}}
{{Starbox begin
 | name = HD 120565
}}
{{Starbox image
 | image = 
   {{Location mark
    | image = Ursa Minor constellation map.svg
    | float = center | width = 260 | position = right
    | mark = Red circle.svg | mark_width = 10 | mark_link = HD 120565
    | x = 582 | y = 314
  }}
 | caption = Location of HD 120565 on the map (circled)
}}
{{Starbox observe
 | epoch = [[Astronomy:J2000.0|J2000.0]] ([[Astronomy:International Celestial Reference System|ICRS]])
 | constell = [[Astronomy:Camelopardalis|Camelopardalis]]
 | ra = {{RA|13|42|23.18342}}<ref name = GaiaDR3/>
 | dec = {{DEC|+82|45|08.7103}}<ref name = GaiaDR3/>
 | appmag_v = 5.91{{±|0.01}}<ref name = Tycho2000/>
}}
{{Starbox character
 | class = G9 III<ref name = Cowley1979/>
 | b-v = +1.01<ref name = Haggkvist1970/>
}}
{{Starbox astrometry
 | radial_v = −45.2{{±|1.2}}<ref name = Gontcharov2006/>
 | parallax = 8.8109 
 | p_error = 0.0364
 | parallax_footnote = <ref name = GaiaDR3/>
 | prop_mo_ra = +29.995
 | prop_mo_dec = −43.734
 | pm_footnote = <ref name = GaiaDR3/>
 | absmag_v = +0.48<ref name=  Anderson2012/>
}}
{{Starbox detail
 | mass = 2.70{{±|0.11}}<ref name = GaiaDR3/>
 | radius = 10.8{{±|0.3|0.2}}<ref name = GaiaDR2/>
 | luminosity = 64.1{{±|0.5}}<ref name = GaiaDR3/>
 | gravity = 2.47<ref name = Anders2019/>
 | temperature = 4,993{{±|122}}<ref name = Stassun2019/>
 | metal_fe = −0.20<ref name = Charbonnel2020/>
 | rotational_velocity = 2.6{{±|1}}<ref name = "De Medeiros2002"/>
 | age_myr = 503{{±|75|70}}<ref name = GaiaDR3/>
}}
{{Starbox catalog
 | names = {{odlist|HD = 120565|AG = +83°357|BD = +83°397|FK5 = 1643|GC = 18611|HIP = 66878|HR = 5203|SAO = 2266}}<ref name = SIMBAD/>
}}
{{Starbox reference 
 | Simbad = HR+5203
}}
{{Starbox end}}

'''HD 120565''', also designated as '''HR 5203''', is a [[Astronomy:Star|star]] located in the northern [[Astronomy:Circumpolar constellation|circumpolar constellation]] [[Astronomy:Camelopardalis|Camelopardalis]]. It is faintly visible to the [[Astronomy:Naked eye|naked eye]] as an orange-hued point of light with an [[Astronomy:Apparent magnitude|apparent magnitude]] of 5.91. Gaia DR3 [[Astronomy:Parallax|parallax]] measurements imply a distance of 370 [[Astronomy:Light-year|light-year]]s and it is currently drifting closer with a heliocentric [[Astronomy:Radial velocity|radial velocity]] of {{val|−45.2|ul=km/s}}.  At its current distance, HD 120565's brightness is diminished by 0.12 [[Astronomy:Magnitude|magnitude]]s due to interstellar extinction<ref name = Gontcharov2017/> and it has an [[Astronomy:Absolute magnitude|absolute magnitude]] of +0.48.<ref name=  Anderson2012/>

HD 120565 has a [[Astronomy:Stellar classification|stellar classification]] of G9 III,<ref name = Cowley1979/> indicating that it is an [[Astronomy:Stellar evolution|evolved]] G-type [[Astronomy:Giant star|giant star]].  It has 2.7 times the mass of the Sun<ref name = GaiaDR3/> but at the age of 503 million years,<ref name = GaiaDR3/> it has expanded to 10.8 times the radius of the Sun.<ref name = GaiaDR2/> It radiates 64.1 times the luminosity of the Sun<ref name = GaiaDR3/> from its enlarged [[Astronomy:Photosphere|photosphere]] at an [[Astronomy:Effective temperature|effective temperature]] of {{val|4993|ul=K|fmt=commas}}.<ref name = Stassun2019/> HD 120565 is metal deficient with an [[Chemistry:Iron|iron]] abundance 63.1% that of the [[Astronomy:Sun|Sun]]'s or [Fe/H] = −0.22,<ref name = Charbonnel2020/> and it spins modestly with a projected rotational velocity of {{val|2.6|ul=km/s}}.<ref name = "De Medeiros2002"/> It was determined to be a single-lined [[Astronomy:Spectroscopic binary|spectroscopic binary]] by J.R. De Mederios and J. R. P. da Silva based on radial velocity variations.<ref name = "De Medeiros2002"/>

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

<ref name = GaiaDR3>{{Cite DR3|1725211190830828672}}</ref>

<ref name = Tycho2000>{{cite journal | last1 = Høg | first1 = E. | last2 = Fabricius | first2 = C. | last3 = Makarov | first3 = V. V. | last4 = Urban | first4 = S. | last5 = Corbin | first5 = T. | last6 = Wycoff | first6 = G. | last7 = Bastian | first7 = U. | last8 = Schwekendiek | first8 = P. | last9 = Wicenec | first9 = A. | title = The Tycho-2 catalogue of the 2.5 million brightest stars | journal = Astronomy and Astrophysics | date = March 2000 | volume = 355 | pages = L27–L30 | s2cid = 17128864 | bibcode = 2000A&A...355L..27H | issn = 0004-6361}}</ref>

<ref name = Cowley1979>{{cite journal | last1 = Cowley | first1 = A. P. | last2 = Bidelman | first2 = W. P. | title = MK spectral types for some F and G stars. | journal = Publications of the Astronomical Society of the Pacific | date = February 1979 | volume = 91 | page = 83 | issn = 0004-6280 | eissn = 1538-3873 | doi = 10.1086/130446 | bibcode = 1979PASP...91...83C | doi-access = free}}</ref>

<ref name = Haggkvist1970>{{cite journal | last1=Haggkvist | first1=L. | last2=Oja | first2=T. | title=Results of BV photometry 1969-70 (Uppsala refractor) | s2cid=231475662 | journal=Private Communication | year=1970 | bibcode=1970Priv.........0H | page=}}</ref>

<ref name = Gontcharov2006>{{cite journal | last1 = Gontcharov | first1 = G. A. | title = Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system | journal = Astronomy Letters | date = November 2006 | volume = 32 | issue = 11 | pages = 759–771 | issn = 1063-7737 | eissn = 1562-6873 | doi = 10.1134/S1063773706110065 | pmid = | bibcode = 2006AstL...32..759G | arxiv = 1606.08053 | s2cid = 119231169 }}</ref>

<ref name = Anderson2012>{{cite journal | last1 = Anderson | first1 = E. | last2 = Francis | first2 = Ch. | title = XHIP: An extended hipparcos compilation | journal = Astronomy Letters | date = May 2012 | volume = 38 | issue = 5 | pages = 331–346 | issn = 1063-7737 | eissn = 1562-6873 | doi = 10.1134/S1063773712050015 | bibcode = 2012AstL...38..331A | arxiv = 1108.4971| s2cid = 119257644}}</ref>

<ref name = "De Medeiros2002">{{cite journal | last1 = De Medeiros | first1 = J. R. | last2 = Da Silva | first2 = J. R. P. | last3 = Maia | first3 = M. R. G. | title = The Rotation of Binary Systems with Evolved Components | journal = The Astrophysical Journal | date = 20 October 2002 | volume = 578 | issue = 2 | pages = 943–950 | issn = 0004-637X | eissn = 1538-4357 | doi = 10.1086/342613 | s2cid = 16196039 | bibcode =2002ApJ...578..943D | arxiv = astro-ph/0207288 | doi-access = free}}</ref>

<ref name = Charbonnel2020>{{cite journal | last1 = Charbonnel | first1 = C. | last2 = Lagarde | first2 = N. | last3 = Jasniewicz | first3 = G. | last4 = North | first4 = P. L. | last5 = Shetrone | first5 = M. | last6 = Krugler Hollek | first6 = J. | last7 = Smith | first7 = V. V. | last8 = Smiljanic | first8 = R. | last9 = Palacios | first9 = A. | last10 = Ottoni | first10 = G. | title = Lithium in red giant stars: Constraining non-standard mixing with large surveys in the ''Gaia'' era | journal = Astronomy & Astrophysics | date = January 2020 | volume = 633 | page = A34 | issn = 0004-6361 | eissn = 1432-0746 | doi = 10.1051/0004-6361/201936360 | s2cid = 204907220 | bibcode = 2020A&A...633A..34C | arxiv = 1910.12732  | doi-access = free}}</ref>

<ref name = Stassun2019>{{cite journal | display-authors = 1 | last1 = Stassun | first1 = Keivan G. | last2 = Oelkers | first2 = Ryan J. | last3 = Paegert | first3 = Martin | last4 = Torres | first4 = Guillermo | last5 = Pepper | first5 = Joshua | last6 = Lee | first6 = Nathan De | last7 = Collins | first7 = Kevin | last8 = Latham | first8 = David W. | last9 = Muirhead | first9 = Philip S. | last10 = Chittidi | first10 = Jay | last11 = Rojas-Ayala | first11 = Bárbara | last12 = Fleming | first12 = Scott W. | last13 = Rose | first13 = Mark E. | last14 = Tenenbaum | first14 = Peter | last15 = Ting | first15 = Eric B. | last16 = Kane | first16 = Stephen R. | last17 = Barclay | first17 = Thomas | last18 = Bean | first18 = Jacob L. | last19 = Brassuer | first19 = C. E. | last20 = Charbonneau | first20 = David | last21 = Ge | first21 = Jian | last22 = Lissauer | first22 = Jack J. | last23 = Mann | first23 = Andrew W. | last24 = McLean | first24 = Brian | last25 = Mullally | first25 = Susan | last26 = Narita | first26 = Norio | last27 = Plavchan | first27 = Peter | last28 = Ricker | first28 = George R. | last29 = Sasselov | first29 = Dimitar | last30 = Seager | first30 = S. | last31 = Sharma | first31 = Sanjib | last32 = Shiao | first32 = Bernie | last33 = Sozzetti | first33 = Alessandro | last34 = Stello | first34 = Dennis | last35 = Vanderspek | first35 = Roland | last36 = Wallace | first36 = Geoff | last37 = Winn | first37 = Joshua N. | title = The Revised ''TESS'' Input Catalog and Candidate Target List | journal = The Astronomical Journal | date = 9 September 2019 | volume = 158 | issue = 4 | page = 138 | eissn = 1538-3881 | doi = 10.3847/1538-3881/ab3467 | bibcode = 2019AJ....158..138S | arxiv = 1905.10694 | s2cid = 166227927 | hdl = 1721.1/124721 | hdl-access = free | doi-access = free}}</ref>

<ref name = Anders2019>{{cite journal | display-authors = 1 | last1 = Anders | first1 = F. | last2 = Khalatyan | first2 = A. | last3 = Chiappini | first3 = C. | last4 = Queiroz | first4 = A. B. | last5 = Santiago | first5 = B. X. | last6 = Jordi | first6 = C. | last7 = Girardi | first7 = L. | last8 = Brown | first8 = A. G. A. | last9 = Matijevič | first9 = G. | last10 = Monari | first10 = G. | last11 = Cantat-Gaudin | first11 = T. | last12 = Weiler | first12 = M. | last13 = Khan | first13 = S. | last14 = Miglio | first14 = A. | last15 = Carrillo | first15 = I. | last16 = Romero-Gómez | first16 = M. | last17 = Minchev | first17 = I. | last18 = de Jong | first18 = R. S. | last19 = Antoja | first19 = T. | last20 = Ramos | first20 = P. | last21 = Steinmetz | first21 = M. | last22 = Enke | first22 = H. | title = Photo-astrometric distances, extinctions, and astrophysical parameters for ''Gaia'' DR2 stars brighter than ''G'' = 18 | journal = Astronomy & Astrophysics | date = August 2019 | volume = 628 | page = A94 | issn = 0004-6361 | eissn = 1432-0746 | doi = 10.1051/0004-6361/201935765 | bibcode = 2019A&A...628A..94A | arxiv = 1904.11302 | s2cid = 131780028 | doi-access = free}}</ref>

<ref name = GaiaDR2>{{Cite DR2|1725211190830828672}}</ref>

<ref name = SIMBAD>{{Cite simbad|title = HD 120565|access-date = August 22, 2023}}</ref>

<ref name = Gontcharov2017>{{cite journal | last1 = Gontcharov | first1 = George A. | last2 = Mosenkov | first2 = Aleksandr V. | title = Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars | journal = Monthly Notices of the Royal Astronomical Society | date = 28 September 2017 | volume = 472 | issue = 4 | pages = 3805–3820 | issn = 0035-8711 | eissn = 1365-2966 | doi = 10.1093/mnras/stx2219 | bibcode = 2017MNRAS.472.3805G | arxiv = 1709.01160 | s2cid = 118879856 | doi-access = free}}</ref>

}}
{{Stars of Camelopardalis}}

[[Category:G-type giants]]
[[Category:Spectroscopic binaries]]
[[Category:Durchmusterung objects|BD+83 00397]]
[[Category:Henry Draper Catalogue objects|120565]]
[[Category:Hipparcos objects|066878]]
[[Category:Bright Star Catalogue objects|5203]]

{{Sourceattribution|HD 120565}}