Star in the constellation Ophiuchus
67 Ophiuchi Location of 67 Ophiuchi (circled)
Observation dataEpoch J2000 Equinox J2000 Constellation Ophiuchus Right ascension 18h 00m 38.71619s [ 1] Declination 2° 55′ 53.6324″[ 1] Apparent magnitude (V)3.93[ 2] Characteristics Spectral type B5Ib[ 3] U−Bcolor index -0.62[ 2] B−Vcolor index +0.03[ 2] Astrometry Radial velocity (Rv )[ 4] km/s Proper motion (μ)RA: +1.15[ 1] mas /yr Dec.: -9.35[ 1] mas /yr Parallax (π)2.65± 0.54 mas [ 1] Distance ± 200ly ± 60pc )[ 5] Absolute magnitude (MV )[ 6] Details Mass ± 0.4[ 5] M ☉ Radius ± 4[ 5] R ☉ Luminosity +9,200 [ 5] L ☉ Surface gravity (log g )3.03[ 7] cgs Temperature ± 300[ 5] K Metallicity -0.01[ 7] dex Rotational velocity (v sin i )40[ 8] Age +1.6 [ 5] Myr Other designations BD +02°3458,CCDM J18007+0256A,FK5 677,GC 24509,HIP 88192,HR 6714,HD 164353,SAO 123013,WDS J18006+0256ADatabase references SIMBAD data
67 Ophiuchi (67 Oph) is aclass B5 Ib [ 3] star in theconstellation Ophiuchus . Its apparent magnitude is 3.93[ 2] spectroscopy .[ 5] open cluster Collinder 359 (Melotte 186 ).
67 Oph has four companions. The closest is a magnitude 13.7 B1 main sequence star at 8.29", designated B. Component C (BD +02°3459) is the brightest close companion, a magnitude 8.1 B2 main sequence star at 54.32". Component D is a magnitude 12.5 star 8.37" from component C. Component E is a magnitude 10.9 star 46.53" from 67 Oph A.[ 9]
This star was once considered part of the obsolete constellationTaurus Poniatovii , but after theInternational Astronomical Union officially recognized constellations, it was placed in Ophiuchus.[ 10]
^a b c d e 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 . Vizier catalog entry ^a b c d Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system".CDS/ADC Collection of Electronic Catalogues .2237 .Bibcode :2002yCat.2237....0D . ^a b Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)".VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H .5050 .Bibcode :1995yCat.5050....0H . ^ Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system".Astronomy Letters .32 (11):759– 771.arXiv :1606.08053 Bibcode :2006AstL...32..759G .doi :10.1134/S1063773706110065 .S2CID 119231169 . ^a b c d e f g Weßmayer, D.; Przybilla, N.; Butler, K. (2022-12-01). "Quantitative spectroscopy of B-type supergiants".Astronomy & Astrophysics 668 : A92.arXiv :2208.02692 Bibcode :2022A&A...668A..92W .doi :10.1051/0004-6361/202243973 .ISSN 0004-6361 . ^ 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 . Vizier catalog entry ^a b Wu, Yue; Singh, H. P.; Prugniel, P.; Gupta, R.; Koleva, M. (2010). "Coudé-feed stellar spectral library – atmospheric parameters".Astronomy & Astrophysics .525 : A71.arXiv :1009.1491 Bibcode :2011A&A...525A..71W .doi :10.1051/0004-6361/201015014 .S2CID 53480665 . ^ Abt, Helmut A.; Levato, Hugo; Grosso, Monica (2002)."Rotational Velocities of B Stars" .The Astrophysical Journal .573 (1):359– 365.Bibcode :2002ApJ...573..359A .doi :10.1086/340590 ^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (2001)."The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog" .The Astronomical Journal .122 (6): 3466.Bibcode :2001AJ....122.3466M .doi :10.1086/323920 Vizier catalog entry ^ Ian Ridpath."Taurus Poniatovii" .Star Tales . Retrieved2023-11-01 .
