Star in the constellation of Lupus
HD 143699 is a single[ 7] star in the southernconstellation ofLupus . It is a dim star but visible to the naked eye with anapparent visual magnitude of 4.90.[ 2] parallax shift ofmas [ 1] light years away. It is most likely (90%[ 8] [ 9] Sco OB2 moving group .
This star has astellar classification of B5/7 III/IV,[ 3] evolving star that is entering thegiant stage . However, according to Zorec and Royer (2012) it is only 56% of the way through itsmain sequence lifespan.[ 4] chemically peculiar magnetic B star,[ 10] field strength of± 140.4)× 10−3 T [ 11] spectrum .[ 12] Radio emissions have been detected from this source.[ 10]
HD 143699 has 4.3[ 4] mass of the Sun and 4.4[ 5] Sun's radius . It has a high rate of spin with aprojected rotational velocity of 123 km/s.[ 4] [ 4] Sun's luminosity from itsphotosphere at aneffective temperature of 14,521 K.[ 4]
^a b c d e f Brown, A. G. A. ; et al. (Gaia collaboration ) (August 2018)."Gaia Data Release 2: Summary of the contents and survey properties" .Astronomy & Astrophysics 616 . A1.arXiv :1804.09365 Bibcode :2018A&A...616A...1G doi :10.1051/0004-6361/201833051 ^a b c d e Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation",Astronomy Letters ,38 (5): 331,arXiv :1108.4971 Bibcode :2012AstL...38..331A ,doi :10.1134/S1063773712050015 ,S2CID 119257644 . ^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 . ^a b c d e f g h i Zorec, J.; Royer, F. (2012), "Rotational velocities of A-type stars. IV. Evolution of rotational velocities",Astronomy & Astrophysics ,537 : A120,arXiv :1201.2052 Bibcode :2012A&A...537A.120Z ,doi :10.1051/0004-6361/201117691 ,S2CID 55586789 . ^a b Pasinetti Fracassini, L. E.; et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)",Astronomy and Astrophysics ,367 (2) (Third ed.):521– 524,arXiv :astro-ph/0012289 Bibcode :2001A&A...367..521P ,doi :10.1051/0004-6361:20000451 ,S2CID 425754 . ^ "HD 143699" .SIMBAD Centre de données astronomiques de Strasbourg . Retrieved2018-07-29 .^ Eggleton, P. P.; Tokovinin, A. A. (2008), "A catalogue of multiplicity among bright stellar systems",Monthly Notices of the Royal Astronomical Society ,389 (2): 869,arXiv :0806.2878 Bibcode :2008MNRAS.389..869E ,doi :10.1111/j.1365-2966.2008.13596.x S2CID 14878976 . ^ Rizzuto, Aaron; et al. (October 2011), "Multidimensional Bayesian membership analysis of the Sco OB2 moving group",Monthly Notices of the Royal Astronomical Society ,416 (4):3108– 17,arXiv :1106.2857 Bibcode :2011MNRAS.416.3108R ,doi :10.1111/j.1365-2966.2011.19256.x S2CID 54510608 . ^ Bobylev, V. V.; Bajkova, A. T. (September 2007), "Kinematics of the Scorpius–Centaurus OB association",Astronomy Letters ,33 (9):571– 583,arXiv :0708.0943 Bibcode :2007AstL...33..571B ,doi :10.1134/S1063773707090010 ,S2CID 15785349 . ^a b Linsky, Jeffrey L.; et al. (July 1992), "Radio Emission from Chemically Peculiar Stars",Astrophysical Journal ,393 : 341,Bibcode :1992ApJ...393..341L ,doi :10.1086/171509 ^ Bychkov, V. D.; et al. (2009), "Catalogue of averaged stellar effective magnetic fields - II. Re-discussion of chemically peculiar A and B stars",Monthly Notices of the Royal Astronomical Society ,394 (3): 1338,Bibcode :2009MNRAS.394.1338B ,doi :10.1111/j.1365-2966.2008.14227.x S2CID 120268049 . ^ Kilambi, Gopal C.; et al. (June 1992), "Mid-ultraviolet and optical photometry of helium stars",Journal of Astrophysics and Astronomy ,13 (2):175– 194,Bibcode :1992JApA...13..175K ,doi :10.1007/BF02702309 ,S2CID 119896529
