[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/omega-capricorni-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/omega-capricorni-wikipedia\/","headline":"Omega Capricorni – Wikipedia","name":"Omega Capricorni – Wikipedia","description":"before-content-x4 From Wikipedia, the free encyclopedia after-content-x4 Star in the constellation Capricornus Omega Capricorni after-content-x4 Location of \u03c9 Capricorni (circled)","datePublished":"2014-01-20","dateModified":"2014-01-20","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/en\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/en\/author\/lordneo\/","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/cd810e53c1408c38cc766bc14e7ce26a?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/cd810e53c1408c38cc766bc14e7ce26a?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Enzyklop\u00e4die","logo":{"@type":"ImageObject","@id":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","url":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/9\/91\/Capricornus_constellation_map.svg\/280px-Capricornus_constellation_map.svg.png","url":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/9\/91\/Capricornus_constellation_map.svg\/280px-Capricornus_constellation_map.svg.png","height":"245","width":"280"},"url":"https:\/\/wiki.edu.vn\/en\/omega-capricorni-wikipedia\/","wordCount":4166,"articleBody":"     (adsbygoogle = window.adsbygoogle || []).push({});before-content-x4From Wikipedia, the free encyclopedia       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4Star in the constellation CapricornusOmega Capricorni       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4Location of \u03c9 Capricorni (circled)Observation dataEpoch J2000.0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Equinox J2000.0 (ICRS)ConstellationCapricornusRight ascension20h 51m 49.29095s[1]Declination\u221226\u00b0\u00a055\u2032\u00a008.8912\u2033[1]Apparent\u00a0magnitude\u00a0(V)+4.11[2]CharacteristicsSpectral\u00a0typeK4\u00a0III[3]U\u2212B color index+1.93[2]B\u2212V color index+1.64[2]Variable\u00a0typeSuspected[4]AstrometryRadial velocity (Rv)+9.1\u00b11.4[5]\u00a0km\/sProper motion (\u03bc) RA:\u00a0\u22129.261[1]\u00a0mas\/yr Dec.:\u00a0\u22121.598[1]\u00a0mas\/yr Parallax (\u03c0)3.1381\u00a0\u00b1\u00a00.3711\u00a0mas[1]Distanceapprox. 1,000\u00a0ly (approx. 320\u00a0pc)Absolute\u00a0magnitude\u00a0(MV)\u22122.7[6]DetailsMass6.8\u00b10.9[7]\u00a0M\u2609Radius172.1+6.1\u221212.0[1]\u00a0R\u2609Luminosity6,269+826\u2212833[1]\u00a0L\u2609Surface gravity (log\u00a0g)0.85[8]\u00a0cgsTemperature3,915+138\u221268[1]\u00a0KMetallicity [Fe\/H]\u22120.24[9]\u00a0dexRotational velocity (v\u00a0sin\u00a0i)4.68[8]\u00a0km\/sAge48.1\u00b18.3[7]\u00a0MyrOther designationsDatabase referencesSIMBADdataOmega Capricorni, which is Latinized from \u03c9 Capricorni, is a star in the southern constellation Capricornus, near the southern constellation border with Microscopium. It is an orange hued star that is faintly visible to the naked eye, having an apparent visual magnitude of +4.11.[2] Based upon an annual parallax shift of 3.1\u00a0mas as seen from the Earth,[1] it is located approximately 1,000\u00a0light years from the Sun. It is a candidate member of the Ursa Major Moving Group[11] and has a relatively high peculiar velocity of 25.7\u00b11.9\u00a0km\/s, making it is a possible runaway star.[7]In Chinese, \u5929\u7530 (Ti\u0101n Ti\u00e1n), meaning Celestial Farmland, refers to an asterism consisting of \u03c9 Capricorni, 3 Piscis Austrini, 24 Capricorni and \u03c8 Capricorni.[12] Consequently, the Chinese name for \u03c9 Capricorni itself is \u5929\u7530\u4e8c (Ti\u0101n Ti\u00e1n \u00e8r, English: the First Star of Celestial Farmland.)[13]This is an evolved K-type giant star with a stellar classification of K4\u00a0III,[3] and is a suspected variable.[4] With the supply of hydrogen at its core exhausted, the star has expanded to about 172[1] times the radius of the Sun. It is 48[7]\u00a0million years old with 7 times the mass of the Sun.[7] Omega Capricorni is radiating 6,300[1] times the luminosity of the Sun from its bloated photosphere at an effective temperature of 3,915\u00a0K.[1] It is a barium star,[6] showing an overabundance of the s-process elements. This suggests that Omega Capricorni has an orbiting white dwarf companion.[14]       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4References[edit]^ a b c d e f g h i j k l Brown, A. G. A.;  et\u00a0al. (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.^ a b c d Nicolet, B. (1978), “Photoelectric photometric Catalogue of homogeneous measurements in the UBV System”, Astronomy and Astrophysics Supplement Series, 34: 1\u201349, Bibcode:1978A&AS…34….1N.^ a b Houk, Nancy (1979), Michigan catalogue of two-dimensional spectral types for the HD stars, vol.\u00a03, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan, Bibcode:1982mcts.book…..H.^ a b NSV 13351, American Association of Variable Star Observers, retrieved 2017-05-07.^ Gontcharov, G. A. (November 2006), “Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system”, Astronomy Letters, 32 (11): 759\u2013771, arXiv:1606.08053, Bibcode:2006AstL…32..759G, doi:10.1134\/S1063773706110065, S2CID\u00a0119231169.^ a b Mennessier, M. O.;  et\u00a0al. (October 1997), “Barium stars, galactic populations and evolution.”, Astronomy and Astrophysics, 326: 722\u2013730, Bibcode:1997A&A…326..722M.^ a b c d e Tetzlaff, N.; Neuh\u00e4user, R.; Hohle, M. M. (January 2011), “A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun”, Monthly Notices of the Royal Astronomical Society, 410 (1): 190\u2013200, arXiv:1007.4883, Bibcode:2011MNRAS.410..190T, doi:10.1111\/j.1365-2966.2010.17434.x, S2CID\u00a0118629873.^ a b Hekker, S.; Mel\u00e9ndez, J. (December 2007), “Precise radial velocities of giant stars. III. Spectroscopic stellar parameters”, Astronomy and Astrophysics, 475 (3): 1003\u20131009, arXiv:0709.1145, Bibcode:2007A&A…475.1003H, doi:10.1051\/0004-6361:20078233, S2CID\u00a010436552.^ McWilliam, Andrew (1990), “High-resolution spectroscopic survey of 671 GK giants. I – Stellar atmosphere parameters and abundances”, The Astrophysical Journal Supplement Series, 74: 1075, Bibcode:1990ApJS…74.1075M, doi:10.1086\/191527.^ “ome Cap”. SIMBAD. Centre de donn\u00e9es astronomiques de Strasbourg. Retrieved 2017-05-07.^ Chupina, N. V.;  et\u00a0al. (June 2006), “Kinematic structure of the corona of the Ursa Major flow found using proper motions and radial velocities of single stars”, Astronomy and Astrophysics, 451 (3): 909\u2013916, Bibcode:2006A&A…451..909C, doi:10.1051\/0004-6361:20054009. See table 7.^ (in Chinese) \u4e2d\u570b\u661f\u5ea7\u795e\u8a71, written by \u9673\u4e45\u91d1. Published by \u53f0\u7063\u66f8\u623f\u51fa\u7248\u6709\u9650\u516c\u53f8, 2005, ISBN\u00a0978-986-7332-25-7.^ (in Chinese)  AEEA (Activities of Exhibition and Education in Astronomy) \u5929\u6587\u6559\u80b2\u8cc7\u8a0a\u7db2 2006 \u5e74 7 \u6708 3 \u65e5^ Gomez, A. E.;  et\u00a0al. (1997), “Absolute magnitudes and kinematics of barium stars”, Astronomy and Astrophysics, 319: 881, Bibcode:1997A&A…319..881G.     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