113 Herculis

Binary star in the constellation Hercules Hercules constellation map.svg center 280 right Red circle.svg 10 113 Herculis 82 682 Location of 113 Herculis (circled in red) J2000.0 Hercules 18 54 44.88499 +22 38 42.2715 4.57 Giant Red clump G8III+ Main sequence Main Sequence A0.5 -21.94 1.84 +6.571 +1.305 7.5501 0.2067 −1.23 245.325 0.006 days 0.0101 0.0001 0.101 0.005 40.2 0.6 70.1 1.2 2447784.1 0.8 JD 186.7 2.0 15.48 0.09 22.58 0.30 A 3.045 22.2 5047 390.9 B 2.087 2.05 9506 390.9 113 Her 11820 +22 3524 25954 175492, HD 175493 92818 7133 18526+2234 108046 86567 2109-2837-1 *+113+Her 113 Herculis is a binary star system located about 430 ly pc on off away in the constellation Hercules. With an apparent magnitude of 4.6, it is faintly visible to the naked eye.Ford Dominic 113-Her (Star) https://in-the-sky.org//data/object.php?id=TYC2109-2837-1 2025-10-31 In-The-Sky.org This star was first discovered to be a spectroscopic binary in 1900 by W. W. Campbell and W. H. Wright. The two stars orbit with a period of 245.3 days. Charecterstics 113 Herculis is a spectroscopic double-line binary with an orbital period of 245.33 days and an eccentricity of 0.10. The system is estimated to be 391 million years old. It contains an evolved primary star, designated 113 Herculis Aa, and generally classified as a G-type yellow giant. It is a red clump star, meaning that it generates its energy by the fusion of helium in its core. It is estimated to be 3.15 times more massive than the Sun and its radius is nearly 24 times larger than the Sun's radius. Its surface temperature is commas 4,775 K. The Secondary component, 113 Herculis Ab, is a white main-sequence star of type A0 to A8. It is 2.18 times more massive than the Sun and its radius is 2.1 times larger than the solar radius. Its surface temperature is 9,183 K.Skiff B. A. October 2014 VizieR Online Data Catalog: Catalogue of Stellar Spectral Classifications (Skiff, 2009- ) VizieR Online Data Catalog 1 B/mk 2014yCat....1.2023S Double and multiple star catalogs list two visual companions of magnitude 11.1 near 113 Herculis. Designated B and C, they were located at 34.4 and 36.9 arcseconds respectively from 113 Herculis A in 2001.Mason Brian D. Wycoff Gary L. Hartkopf William I. Douglass Geoffrey G. Worley Charles E. December 2001 The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog The Astronomical Journal 122 6 3466–3471 10.1086/323920 2001AJ....122.3466M Eggleton & Tokovinin (2008) proposed that these two stars are physically bound to the system,Eggleton P. P. Tokovinin A. A. 2008-09-11 A catalogue of multiplicity among bright stellar systems Monthly Notices of the Royal Astronomical Society 389 2 869–879 10.1111/j.1365-2966.2008.13596.x 0806.2878 2008MNRAS.389..869E free but measurements of their annual parallaxes of components B and C by the Gaia satellite show that they are much more distant, at distances of about 590 pc ly and about 4 kpc kly respectively. References * 113 Her 2 August 2025 4532952022299038976 4532952121073147264 4532963872103668864 92818 Campbell W. W. Wright W. H. November 1900 A list of nine stars whose velocities in the line of sight are variable. Astrophysical Journal 12 254–257 10.1086/140765 1900ApJ....12..254C Hummel C. A. Armstrong J. T. etal July 1995 Orbits of Small Angular Scale Binaries Resolved with the Mark III Interferometer Astronomical Journal 110 376 10.1086/117528 1995AJ....110..376H Eggleton Peter P. Yakut Kadri July 2017 Models for 60 double-lined binaries containing giants Monthly Notices of the Royal Astronomical Society 468 3 3533–3556 10.1093/mnras/stx598 free 1611.05041 2017MNRAS.468.3533E Category:Hercules (constellation) Category:Spectroscopic binaries Category:A-type main-sequence stars Herculis, 113 7133 BD+22 3524 175492 3 092818 Category:G8III stars