^ abcdefghijklBrown, 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. Gaia DR2 record for this source at VizieR.
^ abcdefghijBrown, 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. Gaia DR2 record for this source at VizieR.
^ abMermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode:1986EgUBV........0M.
^ abGontcharov, 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.
^ abLuck, R. Earle (2014). "Parameters and Abundances in Luminous Stars". The Astronomical Journal. 147 (6): 137. Bibcode:2014AJ....147..137L. doi:10.1088/0004-6256/147/6/137.
^Mason, Brian D.; et al. (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.
October 21, 2023
omicron, ophiuchi, ophiuchi, latinized, wide, double, star, equatorial, constellation, ophiuchus, moving, pair, visible, naked, point, light, with, components, having, apparent, visual, magnitudes, 2015, they, angular, separation, along, position, angle, dista. o Ophiuchi Latinized as Omicron Ophiuchi is a wide double star in the equatorial constellation of Ophiuchus The co moving pair are visible to the naked eye as a dim point of light with the two components having apparent visual magnitudes of 5 14 and 6 59 2 As of 2015 they had an angular separation of 10 0 along a position angle of 354 9 The distance to both stars is approximately 281 light years based on parallax and they are drifting closer to the Sun with a radial velocity of around 29 km s 5 Omicron Ophiuchi Observation dataEpoch J2000 Equinox J2000Constellation OphiuchusARight ascension 17h 18m 00 68112s 1 Declination 24 17 12 8535 1 Apparent magnitude V 5 14 2 BRight ascension 17h 18m 00 60620s 3 Declination 24 17 02 8150 3 Apparent magnitude V 6 59 2 CharacteristicsASpectral type G8III 2 U B color index 0 98 4 B V color index 1 046 0 005 2 BSpectral type F6IV V 2 U B color index 0 05 4 B V color index 0 510 0 015 2 AstrometryARadial velocity Rv 28 97 0 13 1 km sProper motion m RA 57 544 1 mas yr Dec 7 725 1 mas yrParallax p 11 5763 0 1756 mas 1 Distance282 4 ly 86 1 pc Absolute magnitude MV 0 38 2 BRadial velocity Rv 29 70 5 km sProper motion m RA 56 561 3 mas yr Dec 12 457 3 mas yrParallax p 11 6213 0 0603 mas 3 Distance281 1 ly 86 0 0 4 pc Absolute magnitude MV 1 66 2 DetailsARadius12 30 0 20 0 32 1 R Luminosity75 3 1 3 1 L Surface gravity log g 2 69 6 cgsTemperature4 849 63 40 1 KMetallicity Fe H 0 33 6 dexBRadius2 99 0 10 0 12 3 R Luminosity12 629 0 086 3 L Temperature6 296 130 105 3 KMetallicity Fe H 0 23 0 08 2 dexOther designationso Oph 39 Ophiuchi CD 24 13255 CCDM J17180 2417 WDS J17180 2417A GC 23344 HD 156349 HIP 84626 HR 6424 SAO 185238 7 B GC 23343 HD 156350 HIP 84625 HR 6425 SAO 185237 8 Database referencesSIMBADABABThe brighter member of the pair designated component A is an aging giant star with a stellar classification of G8III 2 With the supply of hydrogen at its core exhausted it has expanded to 12 1 times the radius of the Sun The star is radiating 75 1 times the Sun s luminosity from its enlarged photosphere at an effective temperature of 4 849 K 1 The secondary star component B has a class of F6IV V 2 matching an F type star with a luminosity class that is a blend of traits from a main sequence and a subgiant star It has three 3 times the Sun s radius and is radiating 12 6 times the Sun s luminosity at 6 296 K 3 References Edit a b c d e f g h i j k l Brown A G A et al Gaia collaboration August 2018 Gaia Data Release 2 Summary of the contents and survey properties Astronomy amp Astrophysics 616 A1 arXiv 1804 09365 Bibcode 2018A amp A 616A 1G doi 10 1051 0004 6361 201833051 Gaia DR2 record for this source at VizieR a b c d e f g h i j k l 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 c d e f g h i j Brown A G A et al Gaia collaboration August 2018 Gaia Data Release 2 Summary of the contents and survey properties Astronomy amp Astrophysics 616 A1 arXiv 1804 09365 Bibcode 2018A amp A 616A 1G doi 10 1051 0004 6361 201833051 Gaia DR2 record for this source at VizieR a b Mermilliod J C 1986 Compilation of Eggen s UBV data transformed to UBV unpublished Catalogue of Eggen s UBV Data Bibcode 1986EgUBV 0M a b 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 Luck R Earle 2014 Parameters and Abundances in Luminous Stars The Astronomical Journal 147 6 137 Bibcode 2014AJ 147 137L doi 10 1088 0004 6256 147 6 137 omi Oph A SIMBAD Centre de donnees astronomiques de Strasbourg omi Oph B SIMBAD Centre de donnees astronomiques de Strasbourg Mason Brian D et al 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 Retrieved from https en wikipedia org w index php title Omicron Ophiuchi amp oldid 1154748867, wikipedia, wiki, book, books, library,
