Star in the constellation Centaurus
HD 102350 is a single[9] star in the constellation Centaurus . It has a yellow hue and is visible to the naked eye with an apparent visual magnitude of 4.11.[2] The distance to this star is approximately 390 light years based on parallax , but it is drifting closer with a radial velocity of −3 km/s.[2] It has an absolute magnitude of −1.51.[6]
This is an aging bright giant star with a stellar classification of G0II.[3] It is a candidate Cepheid variable ,[5] but Hipparcos photometry found its brightness to be constant.[10] The star has expanded to 22[7] times the radius of the Sun and is radiating 283[7] times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,051 K.[7] It has a magnitude 13.0 visual companion at an angular separation of 24.3″ along a position angle of 313° relative to the brighter component, as of 2000.[11]
HD 102350 is listed in the Washington Double Star Catalog as having a 13th magnitude companion about 25″ away,[12] but it is a distant background object unrelated to HD 102350.[13] [9]
References
^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics . 474 (2): 653–664. arXiv :0708.1752 . Bibcode :2007A&A...474..653V . doi :10.1051/0004-6361:20078357 . S2CID 18759600 .
^ a b c d e Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters . 38 (5): 331. arXiv :1108.4971 . Bibcode :2012AstL...38..331A . doi :10.1134/S1063773712050015 . S2CID 119257644 .
^ a b Tetzlaff, N.; et al. (2011). "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun". Monthly Notices of the Royal Astronomical Society . 410 : 190–200. arXiv :1007.4883 . Bibcode :2011MNRAS.410..190T . doi :10.1111/j.1365-2966.2010.17434.x . S2CID 118629873 .
^ Houk, Nancy (1979). Michigan catalogue of two-dimensional spectral types for the HD stars . Vol. 1. Ann Arbor, Michigan: Department of Astronomy, University of Michigan. Bibcode :1978mcts.book.....H .
^ a b Samus, N. N.; et al. (2017). "General Catalogue of Variable Stars". Astronomy Reports . 5.1. 61 (1): 80–88. Bibcode :2017ARep...61...80S . doi :10.1134/S1063772917010085 . S2CID 125853869 .
^ a b Cardini, D. (January 2005). "Mg II chromospheric radiative loss rates in cool active and quiet stars". Astronomy and Astrophysics . 430 : 303–311. arXiv :astro-ph/0409683 . Bibcode :2005A&A...430..303C . doi :10.1051/0004-6361:20041440 . S2CID 12136256 .
^ a b c d e f 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 at VizieR .
^ "HD 102350" . SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2018-07-27 .
^ a b 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 .
^ Adelman, S. J. (2001). "Research Note Hipparcos photometry: The least variable stars" . Astronomy and Astrophysics . 367 : 297–298. Bibcode :2001A&A...367..297A . doi :10.1051/0004-6361:20000567 .
^ Mason, B. D.; et al. (2014). "The Washington Visual Double Star Catalog" . The Astronomical Journal . 122 : 3466–3471. Bibcode :2001AJ....122.3466M . doi :10.1086/323920 .
^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001). "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog" . The Astronomical Journal . 122 (6): 3466–3471. Bibcode :2001AJ....122.3466M . doi :10.1086/323920 .
^ 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 at VizieR .