The system consists of a binary star (Zeta Piscium A) and a triple star system (BC), the latter consisting of a spectroscopic binary (B) and a single star (C). A's two components are themselves designated Zeta Piscium Aa (officially named Revati/ˈreɪvəti/)[7] and Ab; B's two components as Ba and Bb.
As the star system is 0.21° south of the ecliptic,[8] it can be eclipsed (occulted) by the moon, when close to or at one of its two nodes of its orbit;[9] and is eclipsed by the sun from about 8-10 April.[10]
ζ Piscium (Latinised to Zeta Piscium) is the system's Bayer designation. The designations of the three constituents as Zeta Piscium A, B and C, and those of A's and B's components - Zeta Piscium Aa, Ab, Ba and Bb - derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU).[11]
The system is identified with Revati (Sanskrit: रेवती, romanized: rēvatī, Sanskrit pronunciation:[ˈɽeːʋɐt̪iː]), one of the Indian nakshatra (lunar mansions). In 2016, the IAU organized a Working Group on Star Names (WGSN)[12] to catalog and standardize proper names for stars. The WGSN decided to attribute proper names to individual stars rather than entire multiple systems.[13] It approved the name Revati for the constituent Zeta Piscium A on 30 June 2017 and it is now so included in the List of IAU-approved Star Names.[7] Where a component letter is not explicitly listed, the WGSN says that the name should be understood to be attributed to the brightest component by visual brightness (component Aa in this case).[14]
The secondary, Zeta Piscium B, is a spectroscopic binary with a period of 9.075 days and an eccentricity of 0.04. Together, components Ba and Bb have a combined visual magnitude of 6.43 and lie at an angular separation of 22.9 arcseconds from the primary. They are a F-typemain sequence star and a G-type main sequence star, respectively.
The tertiary and fifth component, Zeta Piscium C, is a magnitude 12.2 star at an angular separation 1.0 arc seconds from component B.[2]
Together the star system has an apparent magnitude of +4.9.[8]
^ abcdefghijvan 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.
^ ab"Naming Stars". IAU.org. Retrieved 16 December 2017.
^ abJohn Pratt's stars re-publication by Dr J.P. Pratt (Doctor of Astronomy, University of Arizona) of sidereal coordinate data. Note: possibly a non-book published source.
^Meyer, C.; et al. (1995), "Observations of lunar occultations at Observatoire de la Cote d'Azur", Astronomy and Astrophysics Supplement, 110: 107, Bibcode:1995A&AS..110..107M.
^In the Sky Earth astronomy reference utility showing the ecliptic and relevant date as at J2000 - present.
^Hessman, F. V.; Dhillon, V. S.; Winget, D. E.; Schreiber, M. R.; Horne, K.; Marsh, T. R.; Guenther, E.; Schwope, A.; Heber, U. (2010). "On the naming convention used for multiple star systems and extrasolar planets". arXiv:1012.0707 [astro-ph.SR].
^"IAU Working Group on Star Names (WGSN)". Retrieved 22 May 2016.
^"WG Triennial Report (2015-2018) - Star Names" (PDF). p. 5. Retrieved 2018-07-14.
^"Bulletin of the IAU Working Group on Star Names, No. 2" (PDF). Retrieved 12 October 2016.
^(in Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 5 月 19 日
October 20, 2023
zeta, piscium, piscium, abbreviated, quintuple, star, system, zodiac, constellation, pisces, based, upon, parallax, measurements, obtained, during, hipparcos, mission, located, roughly, light, years, parsecs, distant, from, location, piscium, circled, observat. Zeta Piscium z Piscium abbreviated Zet Psc z Psc is a quintuple 2 star system in the zodiac constellation of Pisces Based upon parallax measurements obtained during the Hipparcos mission it is located roughly 170 light years 52 parsecs distant from the Sun 1 Zeta PisciumLocation of z Piscium circled Observation dataEpoch J2000 0 Equinox J2000 0 ICRS Constellation Piscesz Psc ARight ascension 01h 13m 45 17477s 1 Declination 07 34 31 2745 1 Apparent magnitude V 5 28 2 z Psc BRight ascension 01h 13m 43 88735s 1 Declination 07 34 42 1765 1 Apparent magnitude V 6 43 2 CharacteristicsSpectral type A7IV A7IV F7V G7V 2 Astrometryz Psc AProper motion m RA 145 00 1 mas yr Dec 55 69 1 mas yrParallax p 18 76 2 76 mas 1 Distanceapprox 170 ly approx 53 pc Absolute magnitude MV 1 97 3 z Psc BProper motion m RA 181 78 1 mas yr Dec 40 34 1 mas yrDetails 4 z Psc AMass2 07 0 13 M Luminosity27 4 L Temperature7 345 KRotational velocity v sin i 196 km sz Psc BMetallicity Fe H 0 18 3 dexOther designationsRevati z Psc 86 Piscium WDS J01137 0735z Psc A BD 06 174 FK5 1033 HD 7344 HIP 5737 HR 361 SAO 109739 5 z Psc B BD 06 175 HD 7345 HIP 5743 HR 362 SAO 109740 6 Database referencesSIMBADdataABThe system consists of a binary star Zeta Piscium A and a triple star system BC the latter consisting of a spectroscopic binary B and a single star C A s two components are themselves designated Zeta Piscium Aa officially named Revati ˈ r eɪ v e t i 7 and Ab B s two components as Ba and Bb As the star system is 0 21 south of the ecliptic 8 it can be eclipsed occulted by the moon when close to or at one of its two nodes of its orbit 9 and is eclipsed by the sun from about 8 10 April 10 Contents 1 Nomenclature 2 Properties 3 See also 4 ReferencesNomenclature Editz Piscium Latinised to Zeta Piscium is the system s Bayer designation The designations of the three constituents as Zeta Piscium A B and C and those of A s and B s components Zeta Piscium Aa Ab Ba and Bb derive from the convention used by the Washington Multiplicity Catalog WMC for multiple star systems and adopted by the International Astronomical Union IAU 11 The system is identified with Revati Sanskrit र वत romanized revati Sanskrit pronunciation ˈɽeːʋɐt iː one of the Indian nakshatra lunar mansions In 2016 the IAU organized a Working Group on Star Names WGSN 12 to catalog and standardize proper names for stars The WGSN decided to attribute proper names to individual stars rather than entire multiple systems 13 It approved the name Revati for the constituent Zeta Piscium A on 30 June 2017 and it is now so included in the List of IAU approved Star Names 7 Where a component letter is not explicitly listed the WGSN says that the name should be understood to be attributed to the brightest component by visual brightness component Aa in this case 14 In Chinese astronomy Chinese 外屏 pinyin Wai Ping lit Outer Fence refers to an asterism consisting of Zeta Piscium Delta Piscium Epsilon Piscium Mu Piscium Nu Piscium Xi Piscium and Alpha Piscium Consequently the Chinese name for Zeta Piscium itself is Chinese 外屏三 pinyin Wai Ping san lit the Third Star of Outer Fence 15 Properties EditThe primary Zeta Piscium A is a pair of A type subgiant stars with an angular separation of 0 15 arcseconds and visual magnitude 5 28 2 The secondary Zeta Piscium B is a spectroscopic binary with a period of 9 075 days and an eccentricity of 0 04 Together components Ba and Bb have a combined visual magnitude of 6 43 and lie at an angular separation of 22 9 arcseconds from the primary They are a F type main sequence star and a G type main sequence star respectively The tertiary and fifth component Zeta Piscium C is a magnitude 12 2 star at an angular separation 1 0 arc seconds from component B 2 Together the star system has an apparent magnitude of 4 9 8 See also EditZeta Piscium in fictionReferences Edit a b c d e f g h i j van Leeuwen F 2007 Validation of the new Hipparcos reduction Astronomy and Astrophysics 474 2 653 664 arXiv 0708 1752 Bibcode 2007A amp A 474 653V doi 10 1051 0004 6361 20078357 S2CID 18759600 a b c d e f 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 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 Zorec J Royer F January 2012 Rotational velocities of A type stars IV Evolution of rotational velocities Astronomy amp Astrophysics 537 A120 arXiv 1201 2052 Bibcode 2012A amp A 537A 120Z doi 10 1051 0004 6361 201117691 S2CID 55586789 zet Psc A SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved 2017 07 31 zet Psc B SIMBAD Centre de donnees astronomiques de Strasbourg Retrieved 2017 07 31 a b Naming Stars IAU org Retrieved 16 December 2017 a b John Pratt s stars re publication by Dr J P Pratt Doctor of Astronomy University of Arizona of sidereal coordinate data Note possibly a non book published source Meyer C et al 1995 Observations of lunar occultations at Observatoire de la Cote d Azur Astronomy and Astrophysics Supplement 110 107 Bibcode 1995A amp AS 110 107M In the Sky Earth astronomy reference utility showing the ecliptic and relevant date as at J2000 present Hessman F V Dhillon V S Winget D E Schreiber M R Horne K Marsh T R Guenther E Schwope A Heber U 2010 On the naming convention used for multiple star systems and extrasolar planets arXiv 1012 0707 astro ph SR IAU Working Group on Star Names WGSN Retrieved 22 May 2016 WG Triennial Report 2015 2018 Star Names PDF p 5 Retrieved 2018 07 14 Bulletin of the IAU Working Group on Star Names No 2 PDF Retrieved 12 October 2016 in Chinese AEEA Activities of Exhibition and Education in Astronomy 天文教育資訊網 2006 年 5 月 19 日 Retrieved from https en wikipedia org w index php title Zeta Piscium amp oldid 1165855203, wikipedia, wiki, book, books, library,
