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- Epsilon_Cygni abstract "Epsilon Cygni (ε Cyg, ε Cygni) is a star in the constellation Cygnus. This Bayer designation is from Johann Bayer's 1603 Uranometria atlas of bright stars. With an apparent visual magnitude of 2.48, which makes it readily visible to the naked eye at night and one of the brighter members of Cygnus. It is called Gienah, a traditional name it shares with Gamma Corvi. The name "Gienah" derives from the Arabic word for wing, جناح janāħ. In Chinese, 天津 (Tiān Jīn), meaning Celestial Ford, refers to an asterism consisting of ε Cygni, γ Cygni, δ Cygni, 30 Cygni, α Cygni, ν Cygni, τ Cygni, υ Cygni and ζ Cygni. Consequently, ε Cygni itself is known as 天津九 (Tiān Jīn jiǔ, English: the Ninth Star of Celestial Ford.). Based upon parallax measurement, Epsilon Cygni is about 73 light-years from Earth.Epsilon Cygni is a giant star with a stellar classification of K0 III. This indicates that the star has left the main sequence and has begun the final stages in its stellar evolution. Since 1943, the spectrum of this star has served as one of the stable anchor points by which other stars are classified. The effective temperature of the star's photosphere is 4,710 K, giving Epsilon Cygni an orange hue that is a characteristic of K-type stars. This star has nearly 11 times the solar radius and is about 62 times the luminosity of the Sun.In 1920 it was suggested that the star is a spectroscopic binary system, but this was later brought into question. It has an optical companion Epsilon Cygni B that is not physically associated with Epsilon Cygni A, and a 13th magnitude candidate common proper motion companion Epsilon Cygni C at an angular separation of 78 arcseconds. If the latter star is gravitationally bound to Epsilon Cygni A, then they are currently separated by 1700 AU or more, and have an orbital period of at least 50,000 years. Radial velocity observations of Epsilon Cygni suggest a possible companion with an orbital period of at least 15 years.".
- Epsilon_Cygni thumbnail Cygnus_IAU.svg?width=300.
- Epsilon_Cygni wikiPageExternalLink 81902791.
- Epsilon_Cygni wikiPageExternalLink NGC_6960.html.
- Epsilon_Cygni wikiPageExternalLink 20460042.htm.
- Epsilon_Cygni wikiPageID "1360406".
- Epsilon_Cygni wikiPageLength "10516".
- Epsilon_Cygni wikiPageOutDegree "58".
- Epsilon_Cygni wikiPageRevisionID "679310744".
- Epsilon_Cygni wikiPageWikiLink 30_Cygni.
- Epsilon_Cygni wikiPageWikiLink 52_Cygni.
- Epsilon_Cygni wikiPageWikiLink Apparent_magnitude.
- Epsilon_Cygni wikiPageWikiLink Apparent_visual_magnitude.
- Epsilon_Cygni wikiPageWikiLink Arcsecond.
- Epsilon_Cygni wikiPageWikiLink Astronomical_Unit.
- Epsilon_Cygni wikiPageWikiLink Astronomical_unit.
- Epsilon_Cygni wikiPageWikiLink Bayer_designation.
- Epsilon_Cygni wikiPageWikiLink Binary_star.
- Epsilon_Cygni wikiPageWikiLink Bonner_Durchmusterung.
- Epsilon_Cygni wikiPageWikiLink Bortle_Dark-Sky_Scale.
- Epsilon_Cygni wikiPageWikiLink Bortle_scale.
- Epsilon_Cygni wikiPageWikiLink Bright_Star_Catalogue.
- Epsilon_Cygni wikiPageWikiLink Catalogues_of_Fundamental_Stars.
- Epsilon_Cygni wikiPageWikiLink Category:Bayer_objects.
- Epsilon_Cygni wikiPageWikiLink Category:Cygnus_(constellation).
- Epsilon_Cygni wikiPageWikiLink Category:Durchmusterung_objects.
- Epsilon_Cygni wikiPageWikiLink Category:Flamsteed_objects.
- Epsilon_Cygni wikiPageWikiLink Category:HR_objects.
- Epsilon_Cygni wikiPageWikiLink Category:Henry_Draper_Catalogue_objects.
- Epsilon_Cygni wikiPageWikiLink Category:Hipparcos_objects.
- Epsilon_Cygni wikiPageWikiLink Category:K-type_giants.
- Epsilon_Cygni wikiPageWikiLink Category:Stars_with_proper_names.
- Epsilon_Cygni wikiPageWikiLink Chinese_language.
- Epsilon_Cygni wikiPageWikiLink Constellation.
- Epsilon_Cygni wikiPageWikiLink Cygnus_(constellation).
- Epsilon_Cygni wikiPageWikiLink Delta_Cygni.
- Epsilon_Cygni wikiPageWikiLink Deneb.
- Epsilon_Cygni wikiPageWikiLink Durchmusterung.
- Epsilon_Cygni wikiPageWikiLink Earth.
- Epsilon_Cygni wikiPageWikiLink Effective_temperature.
- Epsilon_Cygni wikiPageWikiLink FK5.
- Epsilon_Cygni wikiPageWikiLink Gamma_Corvi.
- Epsilon_Cygni wikiPageWikiLink Gamma_Cygni.
- Epsilon_Cygni wikiPageWikiLink General_Catalogue_of_Trigonometric_Parallaxes.
- Epsilon_Cygni wikiPageWikiLink Giant_star.
- Epsilon_Cygni wikiPageWikiLink Girl_(Chinese_constellation).
- Epsilon_Cygni wikiPageWikiLink Harvard_Revised_catalogue.
- Epsilon_Cygni wikiPageWikiLink Henry_Draper_Catalogue.
- Epsilon_Cygni wikiPageWikiLink Henry_Draper_catalogue.
- Epsilon_Cygni wikiPageWikiLink Henry_L._Giclas_catalogue.
- Epsilon_Cygni wikiPageWikiLink Hipparcos.
- Epsilon_Cygni wikiPageWikiLink Hipparcos_catalogue.
- Epsilon_Cygni wikiPageWikiLink Johann_Bayer.
- Epsilon_Cygni wikiPageWikiLink List_of_stars_in_Cygnus.
- Epsilon_Cygni wikiPageWikiLink Luyten_Half-Second_catalogue.
- Epsilon_Cygni wikiPageWikiLink Main_sequence.
- Epsilon_Cygni wikiPageWikiLink Minute_and_second_of_arc.
- Epsilon_Cygni wikiPageWikiLink NGC_6960.
- Epsilon_Cygni wikiPageWikiLink Nu_Cygni.
- Epsilon_Cygni wikiPageWikiLink Parallax.
- Epsilon_Cygni wikiPageWikiLink Photosphere.
- Epsilon_Cygni wikiPageWikiLink Proper_motion.
- Epsilon_Cygni wikiPageWikiLink Radial_velocity.
- Epsilon_Cygni wikiPageWikiLink Smithsonian_Astrophysical_Observatory_Star_Catalog.
- Epsilon_Cygni wikiPageWikiLink Solar_luminosity.
- Epsilon_Cygni wikiPageWikiLink Solar_radius.
- Epsilon_Cygni wikiPageWikiLink Spectroscopic_binary.
- Epsilon_Cygni wikiPageWikiLink Spectrum.
- Epsilon_Cygni wikiPageWikiLink Star_catalogue.
- Epsilon_Cygni wikiPageWikiLink Stellar_classification.
- Epsilon_Cygni wikiPageWikiLink Stellar_evolution.
- Epsilon_Cygni wikiPageWikiLink Tau_Cygni.
- Epsilon_Cygni wikiPageWikiLink Upsilon_Cygni.
- Epsilon_Cygni wikiPageWikiLink Uranometria.
- Epsilon_Cygni wikiPageWikiLink Veil_Nebula.
- Epsilon_Cygni wikiPageWikiLink Zeta_Cygni.
- Epsilon_Cygni wikiPageWikiLink File:Cercle_rouge_100%25.svg.
- Epsilon_Cygni wikiPageWikiLink File:Cygnus_IAU.svg.
- Epsilon_Cygni wikiPageWikiLinkText "Epsilon Cygni".
- Epsilon_Cygni wikiPageWikiLinkText "Epsilon".
- Epsilon_Cygni wikiPageWikiLinkText "Gienah".
- Epsilon_Cygni wikiPageWikiLinkText "Giennah".
- Epsilon_Cygni wikiPageWikiLinkText "ε Cyg".
- Epsilon_Cygni wikiPageWikiLinkText "ε Cygni".
- Epsilon_Cygni wikiPageWikiLinkText "ε".
- Epsilon_Cygni absmagV "+0.78 ± 0.03".
- Epsilon_Cygni ageGyr "~1.5".
- Epsilon_Cygni appmagV "2.48".
- Epsilon_Cygni bV "+1.030".
- Epsilon_Cygni class "K0III-IV".
- Epsilon_Cygni constell Cygnus_(constellation).
- Epsilon_Cygni epoch "J2000".
- Epsilon_Cygni gravity "2.8".
- Epsilon_Cygni hasPhotoCollection Epsilon_Cygni.
- Epsilon_Cygni luminosity "62".
- Epsilon_Cygni mass "~2".
- Epsilon_Cygni metalFe "–0.27".
- Epsilon_Cygni pError "0.12".
- Epsilon_Cygni parallax "44.86".
- Epsilon_Cygni propMoDec "330.6".