136 Tauri

Star in the constellation Taurus Taurus constellation map.svg center 260 right Red circle.svg 10 136 Tauri 22 206 Location of 136 Tauri (circled) J2000 Taurus 05 53 19.64606 +27 36 44.1378 4.56 A0 V (A0 V + A0 V) −0.008 0.009 suspected −17.2 4.2 +3.72 −10.11 7.71 0.22 −1.00 5.969 d 0.00 2420147.25 10.0 JD commas 0.00 48.9 71.0 136 Tau A 2.1 197.19 8,732 10 136 Tau +27°899 39357 27830 2034 77675 136+Tau 136 Tauri is a white-hued binary star system in the zodiac constellation of Taurus. It has a combined apparent visual magnitude of 4.56, which is bright enough to be faintly visible to the naked eye. Based upon an annual parallax shift of 7.71 0.22 mas as seen from Earth's orbit, it is located approximately 420 light years from the Sun. The system is moving nearer with a heliocentric radial velocity of −17.2 km/s, and is expected to make its closest approach in 6.5 million years at a distance of 45 pc ly flip on. This is a close, double-lined spectroscopic binary with an orbital period of 5.96 days and an eccentricity of 0.00. Tidal effects between the pair may have circularized their orbit and slowed their rotation rates – the primary has a projected rotational velocity of 10 km/s. They have a combined stellar classification of A0 V, and both are most likely A-type main-sequence stars of the same class. References 136 Tau 2018-03-30 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 XHIP: An extended hipparcos compilation Anderson E. Francis Ch. Astronomy Letters 38 5 331 2012 2012AstL...38..331A 10.1134/S1063773712050015 1108.4971 119257644 . 1 McDonald I. Zijlstra A. A. Boyer M. L. Fundamental parameters and infrared excesses of Hipparcos stars Monthly Notices of the Royal Astronomical Society 427 343–357 2012 1 10.1111/j.1365-2966.2012.21873.x free 2012MNRAS.427..343M 1208.2037 118665352 . Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project Astronomy & Astrophysics De Bruijne J. H. J. Eilers A.-C. 546 A61 2012 10.1051/0004-6361/201219219 . 2012A&A...546A..61D 1208.3048 59451347 1 Pasinetti Fracassini L. E. Pastori L. Covino S. Pozzi A. Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) Astronomy & Astrophysics 3rd 367 521–24 2001 2001A&A...367..521P 10.1051/0004-6361:20000451 astro-ph/0012289 425754 . Abt Helmut A. Boonyarak Chayan Tidal Effects in Binaries of Various Periods The Astrophysical Journal . 616 1 562–566 November 2004 10.1086/423795 2004ApJ...616..562A free 1 Cowley A. Cowley C. Jaschek M. Jaschek C. A study of the bright A stars. I. A catalogue of spectral classifications Astronomical Journal . 74 375–406 April 1969 10.1086/110819 1969AJ.....74..375C A rediscussion of the orbits of seventy-seven spectroscopic binaries Luyten W. J. . Astrophysical Journal 84 85 July 1936 10.1086/143751 1936ApJ....84...85L free 2009yCat....102025S VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013) VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S 1 etal Samus N. N. Durlevich O. V. 2009 Category:Spectroscopic binaries Category:Taurus (constellation) Category:Durchmusterung objects Tauri, 136 039357 027830 2034 Category:Suspected variables Category:A0V stars