[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/wiki24\/nu-andromedae-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/wiki24\/nu-andromedae-wikipedia\/","headline":"Nu Andromedae – Wikipedia","name":"Nu Andromedae – Wikipedia","description":"From Wikipedia, the free encyclopedia Binary star in the constellation Andromeda “\u03bd And” redirects here. For other uses, see Vand.","datePublished":"2014-01-05","dateModified":"2014-01-05","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\/8\/87\/Andromeda_IAU.svg\/250px-Andromeda_IAU.svg.png","url":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/8\/87\/Andromeda_IAU.svg\/250px-Andromeda_IAU.svg.png","height":"235","width":"250"},"url":"https:\/\/wiki.edu.vn\/en\/wiki24\/nu-andromedae-wikipedia\/","about":["Wiki"],"wordCount":4235,"articleBody":"From Wikipedia, the free encyclopediaBinary star in the constellation Andromeda“\u03bd And” redirects here. For other uses, see Vand.Nu AndromedaeLocation of \u03bd Andromedae (circled)Observation dataEpoch J2000\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Equinox J2000ConstellationAndromedaRight ascension00h 49m 48.84737s[1]Declination+41\u00b0\u00a004\u2032\u00a044.0764\u2033[1]Apparent\u00a0magnitude\u00a0(V)4.522[2]CharacteristicsSpectral\u00a0typeB4\/5\u00a0V[3][4] + F8\u00a0V[5]U\u2212B color index\u20130.573[2]B\u2212V color index\u20130.136[2]AstrometryRadial velocity (Rv)\u201323.9[6]\u00a0km\/sProper motion (\u03bc) RA:\u00a0+22.77 \u00b10.12[1]\u00a0mas\/yr Dec.:\u00a0\u201318.35 \u00b10.09[1]\u00a0mas\/yr Parallax (\u03c0)5.28\u00a0\u00b1\u00a00.15\u00a0mas[1]Distance620 \u00b1 20\u00a0ly (189 \u00b1 5\u00a0pc)Absolute\u00a0magnitude\u00a0(MV)\u22121.85[7]Orbit[5]Period (P)4.2827\u00a0dEccentricity (e)0.03Longitude of the node (\u03a9)25.\u00b0Periastron epoch (T)18155.67Semi-amplitude (K1)(primary)71.7 km\/sSemi-amplitude (K2)(secondary)101.9 km\/sDetails\u03bd And AMass5.9 \u00b1 0.2[3]\u00a0M\u2609Radius3.4[8]\u00a0R\u2609Luminosity1,104[7]\u00a0L\u2609Surface gravity (log\u00a0g)4.12 \u00b1 0.43[9]\u00a0cgsTemperature14,851 \u00b1 396[9]\u00a0KMetallicity [Fe\/H]+0.14 \u00b1 0.17[9]\u00a0dexRotational velocity (v\u00a0sin\u00a0i)20[10]\u00a0km\/sAge63.1 \u00b1 17.9[3]\u00a0MyrOther designations \u03bd\u00a0Andromedae, \u03bd\u00a0And, Nu\u00a0And, Nu\u00a0Andromedae 35\u00a0Andromedae, 35\u00a0And, BD+40\u00a0171, FK5\u00a01021, HD\u00a04727, HIP\u00a03881, HR\u00a0226, SAO\u00a036699.[11]Database referencesSIMBADdataNu Andromedae (Nu\u00a0And, \u03bd\u00a0Andromedae, \u03bd\u00a0And) is a binary star in the constellation Andromeda. The system has an apparent visual magnitude of 4.5,[2] which is bright enough to be seen with the naked eye. It is approximately 620 light-years (190 parsecs) from Earth.[1] Situated just over a degree to the west of this star is the Andromeda Galaxy.[12]  Nu Andromedae is the prominent blue star in the upper right of this image. At the center is the Andromeda Galaxy.Nu Andromedae is spectroscopic binary[3] system with a nearly circular orbit that has a period of 4.2828 days.[5] The primary component is a B-type main sequence star with a stellar classification of B5\u00a0V.[3] The fainter secondary has a classification of F8\u00a0V,[5] which makes it an F-type main sequence star. The pair is about 63 million years old.[3]In Chinese, \u594e\u5bbf (Ku\u00ed S\u00f9), meaning Legs (asterism), refers to an asterism consisting of \u03bd Andromedae, \u03b7 Andromedae, 65 Piscium, \u03b6 Andromedae, \u03b5 Andromedae, \u03b4 Andromedae, \u03c0 Andromedae, \u03bc Andromedae, \u03b2 Andromedae, \u03c3 Piscium, \u03c4 Piscium, 91 Piscium, \u03c5 Piscium, \u03c6 Piscium, \u03c7 Piscium and \u03c81 Piscium. Consequently, the Chinese name for \u03bd Andromedae itself is \u594e\u5bbf\u4e03 (Ku\u00ed S\u00f9 q\u012b, English: the Seventh Star of Legs.)[13]References[edit]^ a b c d e f van Leeuwen, F. (November 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.^ a b c d Oja, T. (April 1983), “UBV photometry of FK4 and FK4 supplement stars”, Astronomy and Astrophysics Supplement Series, 52: 131\u2013134, Bibcode:1983A&AS…52..131O.^ a b c d e f 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.^ “Nu Andromedae, a blue main-sequence star in Andromeda”. astrostudio.org. Archived from the original on 23 September 2015. Retrieved 18 August 2014.^ a b c d Pourbaix, D.;  et\u00a0al. (September 2004), “SB9: The ninth catalogue of spectroscopic binary orbits”, Astronomy and Astrophysics, 424: 727\u2013732, arXiv:astro-ph\/0406573, Bibcode:2004A&A…424..727P, doi:10.1051\/0004-6361:20041213, S2CID\u00a0119387088.^ Wilson, R. E. (1953), “General Catalogue of Stellar Radial Velocities”, Carnegie Institute Washington D.C. Publication, Carnegie Institute of Washington D.C., Bibcode:1953GCRV..C……0W.^ 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.^ Pasinetti Fracassini, L. E.;  et\u00a0al. (February 2001), “Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) – Third edition – Comments and statistics”, Astronomy and Astrophysics, 367 (2): 521\u2013524, arXiv:astro-ph\/0012289, Bibcode:2001A&A…367..521P, doi:10.1051\/0004-6361:20000451, S2CID\u00a0425754.^ a b c Koleva, M.; Vazdekis, A. (February 2012), “Stellar population models in the UV. I. Characterisation of the New Generation Stellar Library”, Astronomy & Astrophysics, 538: A143, arXiv:1111.5449, Bibcode:2012A&A…538A.143K, doi:10.1051\/0004-6361\/201118065, S2CID\u00a053999614.^ Abt, Helmut A.; Levato, Hugo; Grosso, Monica (July 2002), “Rotational Velocities of B Stars”, The Astrophysical Journal, 573 (1): 359\u2013365, Bibcode:2002ApJ…573..359A, doi:10.1086\/340590.^ “35 And — Star”, SIMBAD Astronomical Object Database, Centre de Donn\u00e9es astronomiques de Strasbourg, retrieved 2012-06-22.^ Mollise, Rod (2006), The Urban Astronomer’s Guide: A Walking Tour of the Cosmos for City Sky Watchers, Patrick Moore’s Practical Astronomy Series, Springer, p.\u00a0178, ISBN\u00a01846282160.^ (in Chinese) AEEA (Activities of Exhibition and Education in Astronomy) \u5929\u6587\u6559\u80b2\u8cc7\u8a0a\u7db2 2006 \u5e74 5 \u6708 19 \u65e5External links[edit]  "},{"@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\/nu-andromedae-wikipedia\/#breadcrumbitem","name":"Nu Andromedae – Wikipedia"}}]}]