Star in the constellation Columba
HR 2131 (HD 41047 ) is a solitary[ 12] star in the southern constellationColumba . It has anapparent magnitude of 5.52,[ 2] naked eye . The object is located at a distance of 670light years [ 1] radial velocity ofkm/s [ 5]
HR 2131 has astellar classification of K5 III,[ 3] red giant . It has 1.81 times themass of the Sun and is 2.19billion years old.[ 7] L ☉ [ 7] effective temperature of 3,700K [ 10] Sun .[ 8] metallicity – elements heavier thanhelium – is around solar level;[ 10] projected rotational velocity of aboutkm/s [ 11]
^a b c d e f 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 Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars".Astronomy and Astrophysics .355 :L27 – L30 .Bibcode :2000A&A...355L..27H .ISSN 0004-6361 . ^a b Houk, N. (1982).Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume_3. Declinations -40_ƒ0 to -26_ƒ0 .Bibcode :1982mcts.book.....H . ^a b Mermilliod, J. -C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)".Catalogue of Eggen's UBV Data : 0.Bibcode :1986EgUBV........0M . ^a b Kharchenko, N.V.; Scholz, R.-D.; Piskunov, A.E.; Röser, S.; Schilbach, E. (November 2007)."Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ~55000 stars and mean radial velocities of 516 Galactic open clusters and associations" .Astronomische Nachrichten .328 (9):889– 896.arXiv :0705.0878 Bibcode :2007AN....328..889K .doi :10.1002/asna.200710776 ISSN 0004-6337 . ^ 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 Luck, R. Earle (September 2015)."Abundances in the Local Region. I. G and K Giants" .The Astronomical Journal .150 (3): 88.arXiv :1507.01466 Bibcode :2015AJ....150...88L .doi :10.1088/0004-6256/150/3/88 ISSN 0004-6256 . ^a b Stassun, Keivan G.; et al. (9 September 2019)."The Revised TESS Input Catalog and Candidate Target List" .The Astronomical Journal .158 (4): 138.arXiv :1905.10694 Bibcode :2019AJ....158..138S .doi :10.3847/1538-3881/ab3467 ISSN 0004-6256 . ^ Lafrasse, Sylvain; Mella, Guillaume; Bonneau, Daniel; Duvert, Gilles; Delfosse, Xavier; Chesneau, Olivier; Chelli, Alain (16 July 2010). "Building the 'JMMC Stellar Diameters Catalog' using SearchCal".Optical and Infrared Interferometry II . Vol. 7734. pp. 77344E.arXiv :1009.0137 Bibcode :2010SPIE.7734E..4EL .doi :10.1117/12.857024 .S2CID 32097037 . ^a b c d Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R.; Palacios, A.; Ottoni, G. (January 2020)."Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era" .Astronomy & Astrophysics .633 : A34.arXiv :1910.12732 Bibcode :2020A&A...633A..34C .doi :10.1051/0004-6361/201936360 ISSN 0004-6361 . ^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 . ^ Eggleton, P. P.; Tokovinin, A. A. (September 2008)."A catalogue of multiplicity among bright stellar systems" .Monthly Notices of the Royal Astronomical Society 389 (2):869– 879.arXiv :0806.2878 Bibcode :2008MNRAS.389..869E .doi :10.1111/j.1365-2966.2008.13596.x S2CID 14878976 .
