Star in the constellation Sculptor
Tau Sculptoris (τ Scl, τ Sculptoris) is abinary star [ 6] system in the southernconstellation ofSculptor , about 8° to the east-southeast ofAlpha Sculptoris .[ 12] It is faintly visible to the naked eye with a combinedapparent visual magnitude of +5.69.[ 2] Based upon an annualparallax shift of 14.42 mas as seen from Earth,[ 1] it is located around 230 light years from theSun .
The binary nature of this system was discovered by English astronomerJohn Herschel in 1835. The current orbital elements are based upon a fraction of a single orbit, as the estimated orbital period is around 1,503 years. The system has asemimajor axis of 3.2 arc seconds and aneccentricity of 0.6.[ 6] The primary member, component A, is a yellow-white huedF-type main sequence star with anapparent magnitude of +6.06[ 3] and astellar classification of F2 V.[ 4] The companion, component B, is a magnitude 7.35 star.[ 3]
^a b c d e f van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction",Astronomy and Astrophysics ,474 (2):653– 664,arXiv :0708.1752 ,Bibcode :2007A&A...474..653V ,doi :10.1051/0004-6361:20078357 ,S2CID 18759600 . ^a b c Johnson, H. L.; et al. (1966), "UBVRIJKL photometry of the bright stars",Communications of the Lunar and Planetary Laboratory ,4 (99): 99,Bibcode :1966CoLPL...4...99J . ^a b c Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems",Monthly Notices of the Royal Astronomical Society ,389 (2):869– 879,arXiv :0806.2878 ,Bibcode :2008MNRAS.389..869E ,doi :10.1111/j.1365-2966.2008.13596.x ,S2CID 14878976 . ^a b Houk, Nancy (1979),Michigan catalogue of two-dimensional spectral types for the HD stars , vol. 3, Ann Arbor, Michigan: Dept. of Astronomy, University of Michigan,Bibcode :1982mcts.book.....H . ^ de Bruijne, J. H. J.; Eilers, A.-C. (October 2012), "Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project",Astronomy & Astrophysics ,546 : 14,arXiv :1208.3048 ,Bibcode :2012A&A...546A..61D ,doi :10.1051/0004-6361/201219219 ,S2CID 59451347 , A61. ^a b c d e Cvetkovic, Z.; Novakovic, B. (December 2006), "Orbits For Sixteen Binaries",Serbian Astronomical Journal ,173 (173):73– 82,Bibcode :2006SerAJ.173...73C ,doi :10.2298/SAJ0673073C . ^a b c d David, Trevor J.; Hillenbrand, Lynne A. (2015), "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,arXiv :1501.03154 ,Bibcode :2015ApJ...804..146D ,doi :10.1088/0004-637X/804/2/146 ,S2CID 33401607 . ^a b Hardegree-Ullman, Kevin K.; Apai, Dániel; Bergsten, Galen J.; Pascucci, Ilaria; López-Morales, Mercedes (2023)."Bioverse: A Comprehensive Assessment of the Capabilities of Extremely Large Telescopes to Probe Earth-like O2 Levels in Nearby Transiting Habitable-zone Exoplanets" .The Astronomical Journal .165 (6): 267.arXiv :2304.12490 .Bibcode :2023AJ....165..267H .doi :10.3847/1538-3881/acd1ec . ^ Casagrande, L.; et al. (2011), "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey",Astronomy & Astrophysics ,530 (A138): 21,arXiv :1103.4651 ,Bibcode :2011A&A...530A.138C ,doi :10.1051/0004-6361/201016276 ,S2CID 56118016 . ^ Ammler-von Eiff, Matthias; Reiners, Ansgar (June 2012), "New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?",Astronomy & Astrophysics ,542 : A116,arXiv :1204.2459 ,Bibcode :2012A&A...542A.116A ,doi :10.1051/0004-6361/201118724 ,S2CID 53666672 . ^ "tau Scl" ,SIMBAD ,Centre de données astronomiques de Strasbourg , retrieved2017-04-11 .^ O'Meara, Steve (2007),Herschel 400 Observing Guide ,Cambridge University Press , p. 302,ISBN 978-0521858939 .