[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/wiki43\/15-canis-majoris-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/wiki43\/15-canis-majoris-wikipedia\/","headline":"15 Canis Majoris – Wikipedia","name":"15 Canis Majoris – Wikipedia","description":"From Wikipedia, the free encyclopedia Variable B-type supergiant star in the constellation Canis Major 15 Canis Majoris Observation dataEpoch J2000.0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Equinox","datePublished":"2022-12-09","dateModified":"2022-12-09","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/en\/wiki43\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/en\/wiki43\/author\/lordneo\/","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?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:\/\/en.wikipedia.org\/wiki\/Special:CentralAutoLogin\/start?type=1x1","url":"https:\/\/en.wikipedia.org\/wiki\/Special:CentralAutoLogin\/start?type=1x1","height":"1","width":"1"},"url":"https:\/\/wiki.edu.vn\/en\/wiki43\/15-canis-majoris-wikipedia\/","wordCount":2970,"articleBody":"From Wikipedia, the free encyclopediaVariable B-type supergiant star in the constellation Canis Major15 Canis MajorisObservation dataEpoch J2000.0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Equinox J2000.0ConstellationCanis MajorRight ascension06h 53m 32.907s[2]Declination\u221220\u00b0\u00a013\u2032\u00a027.32\u2033[2]Apparent\u00a0magnitude\u00a0(V)+4.82[3]CharacteristicsSpectral\u00a0typeB1\u00a0Ib[4]U\u2212B color index-0.96[5]B\u2212V color index\u22120.212\u00b10.013[3]Variable\u00a0type\u03b2 Cep[4][6]AstrometryRadial velocity (Rv)28.00[7]\u00a0km\/sProper motion (\u03bc) RA:\u00a0\u22125.46\u00b10.16[2]\u00a0mas\/yr Dec.:\u00a0+3.58\u00b10.17[2]\u00a0mas\/yr Parallax (\u03c0)2.68\u00a0\u00b1\u00a00.24\u00a0mas[2]Distance1,200 \u00b1 100\u00a0ly (370 \u00b1 30\u00a0pc)Absolute\u00a0magnitude\u00a0(MV)\u22123.02[3]Details[4]Mass12.8\u00b11.2\u00a0M\u2609Radius6.8\u00b11.2\u00a0R\u2609Luminosity20,000+12,000\u22127,400\u00a0L\u2609Surface gravity (log\u00a0g)3.89\u00b10.20\u00a0cgsTemperature26,100\u00b11,200\u00a0KRotational velocity (v\u00a0sin\u00a0i)20\u00b112\u00a0km\/sOther designationsDatabase referencesSIMBADdata15 Canis Majoris is a variable star in the southern constellation of Canis Major,[8] located roughly 1,200\u00a0light years away from the Sun.[2] It has the variable star designation EY Canis Majoris; 15 Canis Majoris is the Flamsteed designation. The star is visible to the naked eye as a faint, blue-white hued star with a baseline apparent visual magnitude of +4.82.[3] It is moving away from the Earth with a heliocentric radial velocity of 28\u00a0km\/s.[7]This is a B-type supergiant star with a stellar classification of B1\u00a0Ib.[4] It is classified as a Beta Cephei type variable star and its brightness varies from magnitude +4.79 down to +4.84 with a period of 4.430\u00a0h.[6] The star has 12.8 times the mass of the Sun and 6.8 times the Sun’s radius. It is radiating 20,000 times the luminosity of the Sun from its photosphere at an effective temperature of 26,100\u00a0K.[4]References[edit]^ Heynderickx, D. (December 1992). “A photometric study of beta Cephei stars. I. Frequency analyses”. Astronomy & Astrophysics Supplement Series. 96: 207\u2013254. Bibcode:1992A&AS…96..207H. Retrieved 14 November 2021.^ a b c d e f van Leeuwen, F. (2007). “Validation of the new Hipparcos reduction”. Astronomy and Astrophysics. 474 (2): 653\u2013664. arXiv:0708.1752. Bibcode:2007A&A…474..653V. doi:10.1051\/0004-6361:20078357. S2CID\u00a018759600. Archived from the original on 2016-04-02. Vizier catalog entry ^ a b c d 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\u00a0119257644.^ a b c d e Hubrig, S.;  et\u00a0al. (January 2009), “New magnetic field measurements of beta Cephei stars and Slowly Pulsating B stars”, Astronomische Nachrichten, 330 (4): 317, arXiv:0902.1314, Bibcode:2009AN….330..317H, doi:10.1002\/asna.200811187, S2CID\u00a017497112^ Mermilliod, J.-C. (1986). “Compilation of Eggen’s UBV data, transformed to UBV (unpublished)”. Catalogue of Eggen’s UBV Data. Bibcode:1986EgUBV……..0M.^ a b Samus, N. N.;  et\u00a0al. (2017), “General Catalogue of Variable Stars”, Astronomy Reports, 5.1, 61 (1): 80\u201388, Bibcode:2017ARep…61…80S, doi:10.1134\/S1063772917010085, S2CID\u00a0125853869.^ a b Gontcharov, G. A. (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 “15 CMa”. SIMBAD. Centre de donn\u00e9es astronomiques de Strasbourg. Retrieved April 30, 2019."},{"@context":"http:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki43\/#breadcrumbitem","name":"Enzyklop\u00e4die"}},{"@type":"ListItem","position":2,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki43\/15-canis-majoris-wikipedia\/#breadcrumbitem","name":"15 Canis Majoris – Wikipedia"}}]}]