12 Andromedae

Star in the constellation Andromeda Pegasus constellation map.svg center 260 right Red circle.svg 10 12 Andromedae 354 104 Location of 12 Andromedae (circled) J2000 Andromeda 23 20 53.26361 +38 10 56.3671 5.87 Main sequence F5 V 0.45 0.54 −10.5 0.3 130.117 0.034 −58.960 0.033 23.7806 0.0361 2.66 1.25 7.38 3.92 0.14 6454 219 commas +0.00 12 2.548 12 And +37°4817 1610 220117 115280 8885 73190 88745 J23209+3811A 12 And 2018-02-01 12+And 12 Andromedae is a single star in the northern constellation of Andromeda. The designation is from the star catalogue of English astronomer John Flamsteed, first published in 1712. It has an apparent visual magnitude of 5.87, which indicates it is just visible to the naked eye under good seeing conditions. An annual parallax shift of 23.7806 mas provides a distance estimate of 137 light years. The star is moving closer to the Sun with a radial velocity of −10.5 km/s. This is an ordinary F-type main-sequence star with a stellar classification of F5 V. It is about 2.5 billion years old and is spinning with a projected rotational velocity of 12 km/s. The abundance of iron is similar to that in the Sun. The star has an estimated 1.25 times the mass of the Sun and is radiating just over 7 times the Sun's luminosity from its photosphere at an effective temperature of around 6,454 K. References 1916954478140560640 Gontcharov G. A. Pulkovo Compilation of Radial Velocities for 35495 Hipparcos stars in a common system Astronomy Letters . 32 11 759–771 November 2006 10.1134/S1063773706110065 2006AstL...32..759G 1606.08053 119231169 XHIP: An extended hipparcos compilation Anderson E. Francis Ch. Astronomy Letters 38 5 331 2012 2012AstL...38..331A 10.1134/S1063773712050015 1108.4971 119257644 . The Ages of Early-type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets The Astrophysical Journal David Trevor J. Hillenbrand Lynne A. 804 2 146 2015 10.1088/0004-637X/804/2/146 2015ApJ...804..146D 1501.03154 33401607 . Eggleton P. P. Tokovinin A. A. A catalogue of multiplicity among bright stellar systems Monthly Notices of the Royal Astronomical Society 389 2 869–879 September 2008 10.1111/j.1365-2966.2008.13596.x free 2008MNRAS.389..869E . 0806.2878 14878976 1 Takeda Yoichi Sato Bun'ei Kambe Eiji Masuda Seiji Izumiura Hideyuki Watanabe Etsuji Ohkubo Michiko Yanagisawa Kenshi Yasaka Yoshiro High-Dispersion Spectra Collection of Nearby F-K Stars at Okayama Astrophysical Observatory: A Basis for Spectroscopic Abundance Standards Publications of the Astronomical Society of Japan 57 1 13–25 February 2005 . 2005PASJ...57...13T 10.1093/pasj/57.1.13 Takeda Yoichi Fundamental Parameters and Elemental Abundances of 160 F-G-K Stars Based on OAO Spectrum Database Publications of the Astronomical Society of Japan 59 2 335–356 April 2007 2007PASJ...59..335T 10.1093/pasj/59.2.335 . free External links Image 12 Andromedae Category:F5V stars Category:Andromeda (constellation) Category:Durchmusterung objects Andromedae, 12 220117 115280 8885