[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/20-puppis-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/wiki24\/20-puppis-wikipedia\/","headline":"20 Puppis – Wikipedia","name":"20 Puppis – Wikipedia","description":"before-content-x4 From Wikipedia, the free encyclopedia after-content-x4 Star in the constellation Puppis 20 Puppis after-content-x4 Location of 20 Puppis (circled)","datePublished":"2016-06-09","dateModified":"2016-06-09","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/en\/wiki24\/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:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/b\/ba\/Puppis_constellation_map.svg\/280px-Puppis_constellation_map.svg.png","url":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/b\/ba\/Puppis_constellation_map.svg\/280px-Puppis_constellation_map.svg.png","height":"373","width":"280"},"url":"https:\/\/wiki.edu.vn\/en\/wiki24\/20-puppis-wikipedia\/","about":["Wiki"],"wordCount":3668,"articleBody":"     (adsbygoogle = window.adsbygoogle || []).push({});before-content-x4From Wikipedia, the free encyclopedia       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4Star in the constellation Puppis20 Puppis       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4Location of 20 Puppis (circled)Observation dataEpoch J2000\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Equinox J2000ConstellationPuppisRight ascension08h 13m 19.96710s[1]Declination\u221215\u00b0\u00a047\u2032\u00a017.6008\u2033[1]Apparent\u00a0magnitude\u00a0(V)4.99[2]CharacteristicsSpectral\u00a0typeG4\u00a0Ib-II[3]U\u2212B color index+0.78[2]B\u2212V color index+1.07[2]AstrometryRadial velocity (Rv)+16.80[4]\u00a0km\/sProper motion (\u03bc) RA:\u00a0\u221212.718[1]\u00a0mas\/yr Dec.:\u00a0\u22124.270[1]\u00a0mas\/yr Parallax (\u03c0)3.2906\u00a0\u00b1\u00a00.1404\u00a0mas[1]Distance990 \u00b1 40\u00a0ly (300 \u00b1 10\u00a0pc)Absolute\u00a0magnitude\u00a0(MV)\u22122.12[5]DetailsMass5.2\u00b10.2[6]\u00a0M\u2609Radius47.60+1.55\u22121.16[1]\u00a0R\u2609Luminosity1,087.12\u00b153.98[1]\u00a0L\u2609Surface gravity (log\u00a0g)0.80[7]\u00a0cgsTemperature4,804+59\u221277[1]\u00a0KMetallicity [Fe\/H]\u22120.18[5]\u00a0dexRotational velocity (v\u00a0sin\u00a0i)6.9[8]\u00a0km\/sAge90[6]\u00a0MyrOther designationsDatabase referencesSIMBADdata20 Puppis is a solitary[10]star in the southern constellation of Puppis. It is visible to the naked eye as a faint, yellow-hued star with an apparent visual magnitude of 4.99.[2] The star lies approximately 990\u00a0light years away from the Sun based on parallax. It is receding from the Earth with a heliocentric radial velocity of +16.8\u00a0km\/s.[4]This object has a stellar classification of G4\u00a0Ib-II,[3] matching a G-type star with a luminosity class part way between a bright giant and a supergiant star. It is just 90[6]\u00a0million years old with around five[6] times the mass of the Sun. The star has expanded to 48[1] times the Sun’s radius and is radiating 1,087[1] times as much luminosity as the Sun from its enlarged photosphere at an effective temperature of 4,804\u00a0K.[1]References[edit]^ a b c d e f g h i j k 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 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. (1989). “The Perkins catalog of revised MK types for the cooler stars”. Astrophysical Journal Supplement Series. 71: 245. Bibcode:1989ApJS…71..245K. doi:10.1086\/191373.^ 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 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. Vizier catalog entry^ a b c d Lyubimkov, Leonid S.;  et\u00a0al. (2010). “Accurate fundamental parameters for A-, F- and G-type Supergiants in the solar neighbourhood”. Monthly Notices of the Royal Astronomical Society. 402 (2): 1369. arXiv:0911.1335. Bibcode:2010MNRAS.402.1369L. doi:10.1111\/j.1365-2966.2009.15979.x. S2CID\u00a0119096173.^ Soubiran, Caroline;  et\u00a0al. (2016). “The PASTEL catalogue: 2016 version”. Astronomy & Astrophysics. 591: A118. arXiv:1605.07384. Bibcode:2016A&A…591A.118S. doi:10.1051\/0004-6361\/201628497. S2CID\u00a0119258214.^ De Medeiros, J. R.; Mayor, M. (1999). “A catalog of rotational and radial velocities for evolved stars”. Astronomy and Astrophysics Supplement Series. 139 (3): 433. arXiv:astro-ph\/0608248. Bibcode:1999A&AS..139..433D. doi:10.1051\/aas:1999401. Vizier catalog entry^ “20 Pup”. SIMBAD. Centre de donn\u00e9es astronomiques de Strasbourg. Retrieved 2019-06-04.{{cite web}}:  CS1 maint: postscript (link)^ Eggleton, P. P.; Tokovinin, A. A. (2008). “A catalogue of multiplicity among bright stellar systems”. Monthly Notices of the Royal Astronomical Society. 389 (2): 869. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111\/j.1365-2966.2008.13596.x. S2CID\u00a014878976.       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4       (adsbygoogle = window.adsbygoogle || []).push({});after-content-x4"},{"@context":"http:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/#breadcrumbitem","name":"Enzyklop\u00e4die"}},{"@type":"ListItem","position":2,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/20-puppis-wikipedia\/#breadcrumbitem","name":"20 Puppis – Wikipedia"}}]}]