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- Zeta_Cygni abstract "Zeta Cygni (ζ Cyg) is a binary star system in the northern constellation of Cygnus, the swan. It has an apparent visual magnitude of 3.26 and, based upon parallax measurements, is about 143 light-years (44 parsecs) away.The primary component, ζ Cyg A is a giant star with a spectral type of G8 IIIp. Its most likely status is as a core-helium fusing red clump star, an evolved star that has begun core helium fusion. It has around three times the mass of the Sun and has expanded to about 15 times the Sun's radius. It is radiating 112 times the brightness of the Sun from its outer atmosphere at an effective temperature of 4,910 K. At this temperature, the star glows with the yellow hue of a G-type star.The secondary component, ζ Cyg B, is a white dwarf of type DA4.2. The pair orbit each other every 6,489 days (17.8 years) with an eccentricity of 0.22. The white dwarf cannot be seen directly, but is estimated to have an apparent magnitude of 13.2.Zeta Cygni has an overabundance of barium, as well as other heavy chemical elements in its atmosphere, making it a so-called "mild" barium star. These elements were synthesized by the other member of the system as it passed through the asymptotic giant branch (AGB) stage of its evolution, then ejected in its stellar wind and accreted onto the current primary component. Prior to acquiring this additional mass, Zeta Cygni had about 2.5 times the mass of the Sun, while the more evolved AGB star had three solar masses.".
- Zeta_Cygni thumbnail Cygnus_constellation_map.svg?width=300.
- Zeta_Cygni wikiPageID "13790160".
- Zeta_Cygni wikiPageLength "8303".
- Zeta_Cygni wikiPageOutDegree "33".
- Zeta_Cygni wikiPageRevisionID "680987108".
- Zeta_Cygni wikiPageWikiLink Apparent_magnitude.
- Zeta_Cygni wikiPageWikiLink Apparent_visual_magnitude.
- Zeta_Cygni wikiPageWikiLink Arcsecond.
- Zeta_Cygni wikiPageWikiLink Asymptotic_giant_branch.
- Zeta_Cygni wikiPageWikiLink Barium.
- Zeta_Cygni wikiPageWikiLink Bayer_designation.
- Zeta_Cygni wikiPageWikiLink Binary_star.
- Zeta_Cygni wikiPageWikiLink Bonner_Durchmusterung.
- Zeta_Cygni wikiPageWikiLink Bright_Star_Catalogue.
- Zeta_Cygni wikiPageWikiLink Category:Bayer_objects.
- Zeta_Cygni wikiPageWikiLink Category:Cygnus_(constellation).
- Zeta_Cygni wikiPageWikiLink Category:Henry_Draper_Catalogue_objects.
- Zeta_Cygni wikiPageWikiLink Category:Spectroscopic_binaries.
- Zeta_Cygni wikiPageWikiLink Constellation.
- Zeta_Cygni wikiPageWikiLink Cygnus_(constellation).
- Zeta_Cygni wikiPageWikiLink Durchmusterung.
- Zeta_Cygni wikiPageWikiLink Effective_temperature.
- Zeta_Cygni wikiPageWikiLink Flamsteed_designation.
- Zeta_Cygni wikiPageWikiLink G-type_star.
- Zeta_Cygni wikiPageWikiLink Giant_star.
- Zeta_Cygni wikiPageWikiLink Harvard_Revised_catalogue.
- Zeta_Cygni wikiPageWikiLink Henry_Draper_Catalogue.
- Zeta_Cygni wikiPageWikiLink Henry_Draper_catalogue.
- Zeta_Cygni wikiPageWikiLink Hipparcos.
- Zeta_Cygni wikiPageWikiLink Hipparcos_catalogue.
- Zeta_Cygni wikiPageWikiLink Julian_day.
- Zeta_Cygni wikiPageWikiLink List_of_stars_in_Cygnus.
- Zeta_Cygni wikiPageWikiLink Minute_and_second_of_arc.
- Zeta_Cygni wikiPageWikiLink Modified_Julian_Date.
- Zeta_Cygni wikiPageWikiLink Orbital_eccentricity.
- Zeta_Cygni wikiPageWikiLink Parallax.
- Zeta_Cygni wikiPageWikiLink Red_clump.
- Zeta_Cygni wikiPageWikiLink Smithsonian_Astrophysical_Observatory_Star_Catalog.
- Zeta_Cygni wikiPageWikiLink Stellar_atmosphere.
- Zeta_Cygni wikiPageWikiLink Stellar_classification.
- Zeta_Cygni wikiPageWikiLink Stellar_evolution.
- Zeta_Cygni wikiPageWikiLink Stellar_wind.
- Zeta_Cygni wikiPageWikiLink White_dwarf.
- Zeta_Cygni wikiPageWikiLinkText "Zeta Cygni".
- Zeta_Cygni wikiPageWikiLinkText "ζ Cyg".
- Zeta_Cygni wikiPageWikiLinkText "ζ Cygni".
- Zeta_Cygni wikiPageWikiLinkText "ζ".
- Zeta_Cygni absmagV "–0.01".
- Zeta_Cygni ageGyr "0.2".
- Zeta_Cygni appmagV "3.26".
- Zeta_Cygni axisUnitless "0.19"".
- Zeta_Cygni bV "+0.98".
- Zeta_Cygni class "G8IIIa + DA4.2".
- Zeta_Cygni component "ζ Cyg A".
- Zeta_Cygni component "ζ Cyg B".
- Zeta_Cygni constell Cygnus_(constellation).
- Zeta_Cygni eccentricity "0.22".
- Zeta_Cygni epoch "J2000.0".
- Zeta_Cygni gravity "2.41".
- Zeta_Cygni hasPhotoCollection Zeta_Cygni.
- Zeta_Cygni k "3.31".
- Zeta_Cygni luminosity "112".
- Zeta_Cygni mass "0.6".
- Zeta_Cygni mass "3.05".
- Zeta_Cygni metalFe "–0.04".
- Zeta_Cygni pError "0.35".
- Zeta_Cygni parallax "22.79".
- Zeta_Cygni periarg "41".
- Zeta_Cygni periastron Julian_day.
- Zeta_Cygni periastron Modified_Julian_Date.
- Zeta_Cygni periastron "40712".
- Zeta_Cygni periodUnitless "2678400.0".
- Zeta_Cygni propMoDec "–68.21".
- Zeta_Cygni propMoRa "+6.51".
- Zeta_Cygni radialV "+15.85 ± 0.26".
- Zeta_Cygni radius "15".
- Zeta_Cygni rotationalVelocity "0.4".
- Zeta_Cygni temperature "12000".
- Zeta_Cygni temperature "4910".
- Zeta_Cygni uB "+0.77".
- Zeta_Cygni wikiPageUsesTemplate Template:Convert.
- Zeta_Cygni wikiPageUsesTemplate Template:Reflist.
- Zeta_Cygni wikiPageUsesTemplate Template:Starbox_astrometry.
- Zeta_Cygni wikiPageUsesTemplate Template:Starbox_begin.
- Zeta_Cygni wikiPageUsesTemplate Template:Starbox_catalog.
- Zeta_Cygni wikiPageUsesTemplate Template:Starbox_character.
- Zeta_Cygni wikiPageUsesTemplate Template:Starbox_detail.
- Zeta_Cygni wikiPageUsesTemplate Template:Starbox_end.
- Zeta_Cygni wikiPageUsesTemplate Template:Starbox_image.
- Zeta_Cygni wikiPageUsesTemplate Template:Starbox_observe.
- Zeta_Cygni wikiPageUsesTemplate Template:Starbox_orbit.
- Zeta_Cygni wikiPageUsesTemplate Template:Starbox_reference.
- Zeta_Cygni wikiPageUsesTemplate Template:Stars_of_Cygnus.
- Zeta_Cygni subject Category:Bayer_objects.
- Zeta_Cygni subject Category:Cygnus_(constellation).
- Zeta_Cygni subject Category:Henry_Draper_Catalogue_objects.
- Zeta_Cygni subject Category:Spectroscopic_binaries.
- Zeta_Cygni hypernym System.
- Zeta_Cygni type CelestialBody.