The pair was first determined to be binary by F. G. W. Struve in 1832. Since then, the secondary has been seen to revolve approximately 45 degrees around the primary. A number of orbits have been computed, the most recent giving a period of approximately 1500 years.[4]
^ abcComponent 1, HIP 115088, database entry, The Hipparcos and Tycho Catalogues, 1997, CDS ID I/239.
^ abcdefgHR 8872, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line November 24, 2008.
^ abcComponent 2, HIP 115088, database entry, The Hipparcos and Tycho Catalogues, 1997, CDS ID I/239.
^ abcdefDocobo, Jos A. (2003). "Orbit and System Mass for the Visual Binary WDS 23186+6807AB". The Astronomical Journal. 126 (3): 1522–1525. Bibcode:2003AJ....126.1522D. doi:10.1086/377319. S2CID 54769846..
omicron, cephei, latinized, from, cephei, binary, star, constellation, cepheus, consists, less, massive, type, main, sequence, star, orbit, with, more, massive, type, giant, star, overall, apparent, visual, magnitude, system, cephei, observation, dataepoch, j2. Omicron Cephei Latinized from o Cephei is a binary star in the constellation of Cepheus 5 It consists of a less massive F type main sequence star in orbit with a more massive G type giant star 4 The overall apparent visual magnitude of the system is 4 75 2 o Cephei Observation dataEpoch J2000 0 Equinox J2000 0 ICRS Constellation Cepheus o Cep A Right ascension 23h 18m 37 493s Declination 68 6 41 20 1 Apparent magnitude V 4 86 2 o Cep B Right ascension 23h 18m 37 115s Declination 68 06 38 65 3 Apparent magnitude V 7 13 2 Characteristics U B color index 0 49 2 B V color index 0 84 2 R I color index 0 45 2 o Cep A Spectral type G8III 4 o Cep B Spectral type F6V 2 Astrometryo Cep AProper motion m RA 54 88 1 mas yr Dec 10 91 1 mas yrParallax p 15 48 0 55 mas 5 Distance211 7 ly 65 2 pc Absolute magnitude MV 0 78 6 o Cep BProper motion m RA 45 70 3 mas yr Dec 13 19 3 mas yr Orbit 4 Period P 1505 40 ySemi major axis a 3 13 0 12 Eccentricity e 0 439 0 020Inclination i 16 0 4 0 Longitude of the node W 4 5 4 5 Periastron epoch T B1692 20Argument of periastron w secondary 93 0 20 0 Detailso Cep AMass2 35 0 15 4 M Luminosity51 6 L Metallicity Fe H 0 05 0 02 6 dexo Cep BMass1 29 4 M Other designationso Cep Omicron Cephei Omicron Cep 34 Cephei 34 Cep STF 3001AB ADS 16666 AB BD 67 1514 CCDM J23186 6807AB GC 32463 GSC 04478 01361 HD 219916 HIP 115088 HR 8872 IDS 23145 6734 AB PPM 24360 SAO 20554 WDS 23186 6807AB 5 7 Database referencesSIMBADdata The pair was first determined to be binary by F G W Struve in 1832 Since then the secondary has been seen to revolve approximately 45 degrees around the primary A number of orbits have been computed the most recent giving a period of approximately 1500 years 4 Visual companion editCCDM J23186 6807C Observation dataEpoch J2000 0 Equinox J2000 0 ICRS Constellation Cepheus Right ascension 23h 18m 37 5s 8 Declination 68 07 26 8 Apparent magnitude V 12 8 8 Position relative to A Epoch of observation1912Angular distance45 6 7 Position angle4 7 Other designationsSTF 3001C ADS 16666 C IDS 23145 6734 C WDS 23186 6807C 7 8 Database referencesSIMBADdata There is a visual companion CCDM J23186 6807C to the binary star It has an approximate apparent visual magnitude of 12 8 and is located approximately 45 arcseconds away from it 7 8 References edit a b c Component 1 HIP 115088 database entry The Hipparcos and Tycho Catalogues 1997 CDS ID I 239 a b c d e f g HR 8872 database entry The Bright Star Catalogue 5th Revised Ed Preliminary Version D Hoffleit and W H Warren Jr CDS ID V 50 Accessed on line November 24 2008 a b c Component 2 HIP 115088 database entry The Hipparcos and Tycho Catalogues 1997 CDS ID I 239 a b c d e f Docobo Jos A 2003 Orbit and System Mass for the Visual Binary WDS 23186 6807AB The Astronomical Journal 126 3 1522 1525 Bibcode 2003AJ 126 1522D doi 10 1086 377319 S2CID 54769846 a b c omi Cep SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved November 24 2008 a b c 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 Entry 23186 6807 The Washington Double Star Catalog United States Naval Observatory Accessed on line November 24 2008 a b c d e UCAC3 317 95637 SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved November 24 2008 Retrieved from https en wikipedia org w index php title Omicron Cephei amp oldid 1141294706, wikipedia, wiki, book, books, library,
