11 Boötis

High proper motion white-hued star in the constellation Boötes 11 Boötis J2000.0 (ICRS) Boötes 14 01 10.48072 +27 23 11.7452 6.220.01 main sequence A7V +0.172 −24.0 4.3 −78.929 +18.638 9.8333 0.0866 +1.44 142.54301 0.17515 days commas 2457445.023 0.552 commas JD 0.558340.01463 177.081.44 15.2520.449 1.94 2.46270.0543 0.0538 3.93 63.631.19 1.11 7997 272 commas −0.02 123 914 11 Boötis 122405 5263 68478 83130 +28°2287 +27° 1336 517 18943 28171319 11+Boo 11 Boötis (HR 5263; HD 122405) is a spectroscopic binary located in the northern constellation Boötes, the herdsman. With an apparent magnitude of 6.22, it is barely visible to the naked eye even under ideal conditions. The system is located relatively close to the Solar System at a distance of 332 light years, and it is drifting closer with a heliocentric radial velocity of −24 km/s. At its current distance, 11 Boötis' brightness is diminished by an interstellar extinction of only 0.03 magnitudes, and it has an absolute visual magnitude of +1.44. The visible component has a stellar classification of A7V, indicating that it is an A-type main-sequence star. It has 1.94 times the mass of the Sun and a slightly enlarged radius of 2.46 Solar radius. It radiates 63.6 times the luminosity of the Sun from its photosphere at an effective temperature of 7997 K commas, giving it a white hue when viewed in the night sky. 11 Boötis is slightly metal deficient with an iron abundance 95.5% that of the Sun, and it spins rapidly with a projected rotational velocity of 123 km/s. It is estimated to be 914 million years old. According to Gaia DR3 models, 11 Boötis is a single-lined spectroscopic binary. Both components take 142.54 days to circle around each other in an eccentric orbit. References 1450969321300167168 11 Boo April 28, 2019 Häggkvist L. Oja T. Photoelectric BV photometry of 368 northern stars Arkiv för Astronomi 1969 5 125–135 0004-2048 1969ArA.....5..125H Gontcharov G. A. Dependence of kinematics on the age of stars in the solar neighborhood Astronomy Letters December 2012 38 12 771–782 1063-7737 1562-6873 10.1134/S1063773712120031 2012AstL...38..771G 1606.08814 free Høg E. Fabricius C. Makarov V. V. Urban S. Corbin T. Wycoff G. Bastian U. Schwekendiek P. Wicenec A. The Tycho-2 catalogue of the 2.5 million brightest stars Astronomy and Astrophysics March 2000 355 L27–L30 17128864 2000A&A...355L..27H 0004-6361 XHIP: An extended hipparcos compilation Anderson E. Francis Ch. Astronomy Letters 38 5 331 2012 2012AstL...38..331A 1108.4971 10.1134/S1063773712050015 119257644 1 Royer F. Grenier S. Baylac M.-O. Gómez A. E. Zorec J. Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i Astronomy and Astrophysics 393 897–911 October 2002 10.1051/0004-6361:20020943 free 2002A&A...393..897R astro-ph/0205255 14070763 Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system Gontcharov G. A. 2006 Astronomy Letters 32 11 759–771 2006AstL...32..759G 1606.08053 10.1134/S1063773706110065 119231169 David Trevor J. Hillenbrand Lynne A. 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 804 2 146 2015 2015ApJ...804..146D 10.1088/0004-637X/804/2/146 1501.03154 33401607 2022yCat.1357....0G VizieR Online Data Catalog: Gaia DR3 Part 3. Non-single stars (Gaia Collaboration, 2022) Gaia Collaboration Vizier Online Data Catalog 2022 Gontcharov George A. Mosenkov Aleksandr V. Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars Monthly Notices of the Royal Astronomical Society 28 September 2017 472 4 3805–3820 0035-8711 1365-2966 10.1093/mnras/stx2219 2017MNRAS.472.3805G 1709.01160 118879856 free Abt Helmut A. Morrell Nidia I. The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars The Astrophysical Journal Supplement Series 1995 99 135 10.1086/192182 1995ApJS...99..135A Category:Boötes Category:Durchmusterung objects Bootis, 11 122405 068478 5263 Category:Spectroscopic binaries Category:A7V stars