11 Leonis Minoris

Star in the constellation Leo Minor Leo Minor constellation map.svg center 280 right Red circle.svg 10 11 Leonis Minoris 838 390 Location of 11 Leonis Minoris (circled in red) J2000 Leo Minor 09 35 39.50219 +35 48 36.4770 5.54 + 14.0 main sequence G8V + M4 RS CVn +14.40 -726.514 -259.057 89.0092 0.0937 5.25 0.008 11 LMi B 201 3.84 0.88 117 11 LMi A 0.936 0.015 0.992 0.015 0.783 0.013 5452 46 commas 4.44 0.02 18.0 days 0.34 0.02 7.9 11 LMi B 0.23 11 LMi +36°1979 SV Leonis Minoris 356 82885 47080 3815 61586 09357+3549 11+LMi 11 LMi A 11+LMi+B 11 LMi B 00747 11 LMi A 00748 11 LMi B 11 Leonis Minoris is a binary star located 36.64 light years away from Earth, in the northern constellation of Leo Minor. It is visible to the naked eye as a dim, yellow-hued star with an apparent visual magnitude of 5.54. The system is moving away from the Earth with a heliocentric radial velocity of +14.4 km/s. It has a relatively high proper motion, traversing the celestial sphere at the rate of 0.764 arc seconds per annum. thumb|left|A y band light curve for SV Leonis Minoris, adapted from Skiff and Lockwood (1986) The primary component is a G-type main-sequence star with a stellar classification of G8V, which is slightly less massive and slightly dimmer than the Sun. This is an RS Canum Venaticorum variable star with its luminosity varying by 0.033 magnitudes over a period of 18 days. Compared to the Sun, it has more than double the abundance of elements more massive than helium—what astronomers term the star's metallicity. There is a secondary component, a 14th magnitude red dwarf star much dimmer than the primary. The pair have an orbital period of 201 years with a high eccentricity of 0.88. References Soubiran C. Creevey O. L. Lagarde N. Brouillet N. Jofré P. Casamiquela L. Heiter U. Aguilera-Gómez C. Vitali S. Worley C. de Brito Silva D. 2024-02-01 Gaia FGK benchmark stars: Fundamental Teff and log g of the third version 2024A&A...682A.145S Astronomy and Astrophysics 682 A145 10.1051/0004-6361/202347136 2310.11302 0004-6361 11 Leonis Minoris' database entry at VizieR. 1 Park Sunkyung Kang Wonseok Lee Jeong-Eun Lee Sang-Gak Wilson-Bappu Effect: Extended to Surface Gravity The Astronomical Journal 146 4 73 2013 10.1088/0004-6256/146/4/73 2013AJ....146...73P 1307.0592 119187733 . 1 Maldonado J. Martínez-Arnáiz R. M. Eiroa C. Montes D. Montesinos B. A spectroscopy study of nearby late-type stars, possible members of stellar kinematic groups Astronomy and Astrophysics 521 A12 10.1051/0004-6361/201014948 2010A&A...521A..12M 1007.1132 October 2010 119209183 Boyajian Tabetha S. von Braun Kaspar van Belle Gerard Farrington Chris Schaefer Gail Jones Jeremy White Russel McAlister Harold A. ten Brummelaar Theo A. Ridgway Stephen Gies Douglas Sturmann Laszlo Sturmann Judit Turner Nils H. Goldfinger P. J. Vargas Norm 1 Stellar Diameters and Temperatures. III. Main-sequence A, F, G, and K Stars: Additional High-precision Measurements and Empirical Relations The Astrophysical Journal 771 1 40 July 2013 1306.2974 10.1088/0004-637X/771/1/40 2013ApJ...771...40B 14911430 . 798068905726303232 * 11 LMi 2015-06-02 cs2 . 1 Soubiran C. Bienaymé O. Mishenina T. V. Kovtyukh V. V. Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants Astronomy and Astrophysics 2008 480 1 91–101 2008A&A...480...91S 10.1051/0004-6361:20078788 0712.1370 16602121 1 Malkov O. Yu. Tamazian V. S. Docobo J. A. Chulkov D. A. Dynamical masses of a selected sample of orbital binaries Astronomy & Astrophysics 546 A69 5 2012 10.1051/0004-6361/201219774 2012A&A...546A..69M free 1 Skiff B. A. Lockwood G. W. The photometric variability of solar-type stars. V - The standard stars 10 and 11 Leonis Minoris Publications of the Astronomical Society of the Pacific 98 338–341 March 1986 10.1086/131763 1986PASP...98..338S free From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs Tokovinin Andrei The Astronomical Journal 147 4 87 14 April 2014 10.1088/0004-6256/147/4/87 2014AJ....147...87T 1401.6827 56066740 . 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 10.1086/421374 Meeting the Cool Neighbors. VIII. A Preliminary 20 Parsec Census from the NLTT Catalogue The Astronomical Journal 128 1 463 2004AJ....128..463R astro-ph/0404061 Reid I. Neill Cruz Kelle L. Allen Peter R. Mungall Finlay Kilkenny David Liebert James Hawley Suzanne L. Fraser Oliver J. Covey Kevin R. Lowrance Patrick Kirkpatrick J. Davy Burgasser Adam J. 2004 28314795 https://cds.cern.ch/record/728686 Submitted manuscript Lépine Sébastien Shara Michael M. A Catalog of Northern Stars with Annual Proper Motions Larger than 0.15" (LSPM-NORTH Catalog) The Astronomical Journal 129 3 1483–1522 March 2005 10.1086/427854 2005AJ....129.1483L astro-ph/0412070 2603568 . External links Binary Catalog http://159.226.168.243/astrodata/ds2006/ORB6/CATHTML/orb6orbits.html April 4, 2007 dead https://archive.today/20070928095822/http://159.226.168.243/astrodata/ds2006/ORB6/CATHTML/orb6orbits.html September 28, 2007 cs2 Category:M-type main-sequence stars Category:Solar-type stars Category:RS Canum Venaticorum variables Category:Binary stars Category:Leo Minor BD+36 1979 Leonis Minoris, 11 0356 082885 Leonis Minoris, SV 047080 3815 Category:Population I stars Category:G8V stars