12 Boötis

d Boötis delta Boötisδ Boötis Binary in the constellation Boötes Boötes constellation map.svg center 240 right Red circle.svg 10 12 Boötis 754 954 Location of 12 Boötis (circled) J2000 Boötes 14 10 23.933420708.1752 2007A&A...474..653V 10.1051/0004-6361:20078357 free Validation of the new Hipparcos reduction Astronomy and Astrophysics 474 2 653–664 2007 Van Leeuwen F. 18759600 Vizier catalog entry +25 05 30.0394 4.832002yCat.2237....0D VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system CDS/ADC Collection of Electronic Catalogues 2237 Ducati J. R. 2002 F9IVw +0.54 +0.07 +9.646 0.013 −23.43 −59.79 27.917 0.044 2.00 High-precision Orbital and Physical Parameters of Double-lined Spectroscopic Binary Stars—HD78418, HD123999, HD160922, HD200077, and HD210027 Konacki, M. The Astrophysical Journal 719 2 1293–1314 2010 2010ApJ...719.1293K 10.1088/0004-637X/719/2/1293 0910.4482 119253596 12 Boo Aa 12 Boo Ab commas 9.6045601 0.0000036 d commas 3.4706 0.0055 mas 107.95 0.12 80.49 0.10 commas 2454100.43572 0.00070 commas 0.19214 0.00015 286.832 0.029 67.189 0.011 69.311 0.014 12 Boo Aa 1.4109 0.0028 2.45010.1093/mnras/stac2212 2022MNRAS.516.3709B 2208.02302 Solar-like oscillations and ellipsoidal variations in TESS observations of the binary 12 Boötis 2022 Ball Warrick H. Miglio Andrea Chaplin William J. Stassun Keivan G. García Rafael González-Cuesta Lucia Mathur Savita Appourchaux Thierry Benomar Othman Buzasi Derek L. Jiang (姜晨) Chen Kayhan Cenk Örtel Sibel Çelik Orhan Zeynep Yıldız Mutlu Ong (王加冕) J M Joel Basu Sarbani Monthly Notices of the Royal Astronomical Society 516 3 3709–3714 free 6115 −0.065 7.531 3.731999A&A...352..555A astro-ph/9911002 Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures Astronomy and Astrophysics 352 555–562 Allende Prieto C. Lambert D. L. 1999 Vizier catalog entry 12 Boo Ab 1.3677 0.0028 6200 1.901 4.692 −0.065 d Boötis, 12 Boötis, FK5 522, GC 19127, HIP 69226, HR 5304, HD 123999, GJ 9470, BD+25°2737, SAO 83203, WDS J14104+2506AB, CCDM 14104+2505 HD+123999 12 Boötis is a spectroscopic binaryHigh-precision Orbital and Physical Parameters of Double-lined Spectroscopic Binary Stars—HD78418, HD123999, HD160922, HD200077, and HD210027 Konacki Maciej Muterspaugh Matthew W. Kulkarni Shrinivas R. Hełminiak Krzysztof G. 1 The Astrophysical Journal 719 2 1293–1314 2010 0910.4482 2010ApJ...719.1293K 10.1088/0004-637X/719/2/1293 119253596 in the constellation Boötes. It is approximately 122 light years from Earth. 12 Boötis is a yellow-white F-type subgiant with an apparent magnitude of +4.82. It is a spectroscopic binary pair which orbit around its centre of mass once every 9.6045 days,2001AJ....122.3466M 10.1086/323920 The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog The Astronomical Journal 122 6 3466 2001 Mason Brian D. Wycoff Gary L. Hartkopf William I. Douglass Geoffrey G. Worley Charles E. free Vizier catalog entry with an estimated separation of 0.0035".2012A&A...546A..69M 10.1051/0004-6361/201219774 Dynamical masses of a selected sample of orbital binaries Astronomy & Astrophysics 546 A69 2012 Malkov O. Yu. Tamazian V. S. Docobo J. A. Chulkov D. A. free Vizier catalog entry The two stars have similar masses around 1.4, both are slightly hotter than the Sun and about twice as large. A further companion, 12 Boötis B, was reported with a separation of approximately one arcsecond in 1989, but subsequent surveys have repeatedly failed to detect this companion. References See also Image 12 Boötis 123999 Category:Spectroscopic binaries 069226 Bootis, d Bootis, 12 Category:Durchmusterung objects 5304 Category:Boötes Category:F-type subgiants 9470 Category:F9IV stars