Star in the constellation Chamaeleon
HD 120213 (HR 5188 ) is a solitarystar in the southerncircumpolar constellation Chamaeleon . It is faintly visible to thenaked eye with anapparent magnitude of 5.94 and is estimated to be 910light years away from theSolar System . However, the object is drifting closer with a heliocentricradial velocity of −35 km/s .
HD 120213 has astellar classification of K2 III: CN−1 CH −2.5,[ 3] indicating that its ared giant with an under abundance of CH molecules andcyano radicals in itsspectrum . It has also been classified as a mildbarium star ,[ 11] but there is uncertainty about the spectral class. It has 4.2 times themass of the Sun [ 6] and an enlargedradii of 38.6 R ☉ .[ 7] It shines at 503 times theluminosity of the Sun from itsphotosphere at aneffective temperature of 4,401 K ,[ 7] giving it an orange hue. HD 120213 has ametallicity 56% that of theSun [ 6] and spins with aprojected rotational velocity too low to be accurately measured.[ 8]
^a b c d Brown, A. G. A. ; et al. (Gaia collaboration) (2021)."Gaia Early Data Release 3: Summary of the contents and survey properties" .Astronomy & Astrophysics .649 : A1.arXiv :2012.01533 .Bibcode :2021A&A...649A...1G .doi :10.1051/0004-6361/202039657 .S2CID 227254300 . (Erratum: doi :10.1051/0004-6361/202039657e ) . Gaia EDR3 record for this source atVizieR .^a b c Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system".CDS/ADC Collection of Electronic Catalogues .2237 .Bibcode :2002yCat.2237....0D . ^a b Keenan, Philip C.; McNeil, Raymond C. (October 1989)."The Perkins catalog of revised MK types for the cooler stars" .The Astrophysical Journal Supplement Series .71 : 245.Bibcode :1989ApJS...71..245K .doi :10.1086/191373 .eISSN 1538-4365 .ISSN 0067-0049 . ^ Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system".Astronomy Letters .32 (11):759– 771.arXiv :1606.08053 .Bibcode :2006AstL...32..759G .doi :10.1134/S1063773706110065 .ISSN 1063-7737 .S2CID 119231169 . ^ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation".Astronomy Letters .38 (5):331– 346.arXiv :1108.4971 .Bibcode :2012AstL...38..331A .doi :10.1134/S1063773712050015 .ISSN 1063-7737 .S2CID 255204555 . ^a b c d e Palacios, A.; Jasniewicz, G.; Masseron, T.; Thévenin, F.; Itam-Pasquet, J.; Parthasarathy, M. (16 February 2016)."New determination of abundances and stellar parameters for a set of weakG -band stars" .Astronomy & Astrophysics .587 : A42.arXiv :1512.04417 .Bibcode :2016A&A...587A..42P .doi :10.1051/0004-6361/201526566 .eISSN 1432-0746 .ISSN 0004-6361 . ^a b c d e 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 atVizieR .^a b De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014)."A catalog of rotational and radial velocities for evolved stars: V. Southern stars⋆⋆⋆" .Astronomy & Astrophysics .561 : A126.arXiv :1312.3474 .Bibcode :2014A&A...561A.126D .doi :10.1051/0004-6361/201220762 .ISSN 0004-6361 . ^ "HD 120213" .SIMBAD .Centre de données astronomiques de Strasbourg . Retrieved6 June 2022 .^ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas".Resultados del Observatorio Nacional Argentino .1 .Bibcode :1879RNAO....1.....G . ^ Lu, Phillip K. (June 1991)."Taxonomy of barium stars" .The Astronomical Journal .101 : 2229.Bibcode :1991AJ....101.2229L .doi :10.1086/115845 .ISSN 0004-6256 .