109 Tauri

Star in the constellation Taurus Taurus constellation map.svg center 280 right Red circle.svg 10 109 Tauri 218 380 Location of 109 Tauri (circled in red) J2000 Taurus 05 19 16.60169 +22 05 47.3740 4.96 G8 III 0.937 0.001 +19.03 0.01 +18.91 −81.57 13.19 0.30 0.56 2.47 0.08 8.14 0.46 60 10 12 2.96 0.01 5035 23 commas 0.10 0.04 1.15 0.62 600 50 n Tau 109 Tau +21°816 2398 34559 24822 1739 77097 109+Tau 109 Tauri, or n Tauri, is a single, yellow-hued star in the zodiac constellation of Taurus. It has an apparent visual magnitude of 4.96 and is faintly visible to the naked eye. The star has an annual parallax shift of 13.19 0.30 mas, putting it around 247 light years from the Sun. At that distance, the visual magnitude is diminished by an extinction of 0.24 due to interstellar dust. It is moving further from the Sun with a heliocentric radial velocity of +19 km/s. This is an evolved giant star with a stellar classification of G8 III, having consumed the hydrogen at its core and moved off the main sequence. At the age of 600 million years, it has become a red clump giant, indicating that it is on the horizontal branch and is generating energy through helium fusion at its core. The star has an estimated 2.47 times the mass of the Sun and has expanded to around eight times the Sun's radius. It is radiating about 60 times the Sun's luminosity from its enlarged photosphere at an effective temperature of 5,035 K. References 109 Tau 2018-03-22 Validation of the new Hipparcos reduction van Leeuwen F. . Astronomy and Astrophysics 474 2 653–664 2007 0708.1752 2007A&A...474..653V 10.1051/0004-6361:20078357 18759600 1 Puzeras E. Tautvaišienė G. Cohen J. G. Gray D. F. Adelman S. J. Ilyin I. Chorniy Y. High-resolution spectroscopic study of red clump stars in the Galaxy: iron-group elements Monthly Notices of the Royal Astronomical Society 408 2 1225–1232 October 2010 10.1111/j.1365-2966.2010.17195.x free 2010MNRAS.408.1225P . 1006.3857 44228180 The Spectra of the Bright Stars of Types F5-K5 Roman Nancy G. . Astrophysical Journal 116 122 July 1952 10.1086/145598 1952ApJ...116..122R free XHIP: An extended hipparcos compilation Anderson E. Francis Ch. Astronomy Letters 38 5 331 2012 2012AstL...38..331A 10.1134/S1063773712050015 1108.4971 119257644 . 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 . Stellar parameters and chemical abundances of 223 evolved stars with and without planets Jofré E. Petrucci R. Saffe C. Saker L. de la Villarmois E. Artur Chavero C. Gómez M. Mauas P. J. D. Astronomy & Astrophysics 1 574 A50 46 February 2015 10.1051/0004-6361/201424474 2015A&A...574A..50J 1410.6422 53666931 Category:G8III stars Category:Horizontal-branch stars Category:Taurus (constellation) Tauri, n BD+21 0816 Tauri, 109 034559 024822 1739