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- Epsilon_Aquilae abstract "Epsilon Aquilae (ε Aql, ε Aquilae) is the Bayer designation for a binary star in the equatorial constellation of Aquila. It has an apparent visual magnitude of 4.02 and is visible to the naked eye. Based upon an annual parallax of 21.05 mas, Epsilon Aquilae lies at a distance of approximately 155 light-years (48 parsecs) from Earth. This is a spectroscopic binary system. The pair orbit each other over a period of 1,271 days (3.5 years) with an eccentricity of 0.27.It has the traditional name Deneb el Okab, from an Arabic term ذنب العقاب ðanab al-cuqāb meaning \"the tail of the eagle\", and the Mandarin names Woo and Yuë, derived from and represent the state Wu (吳), an old state was located at the mouth of the Yangtze River, and Yue (越), an old state in Zhejiang province (together with 19 Capricorni in Twelve States asterism). According to the R.H. Allen's works, it shares names with ζ Aquilae. Epsilon Aquilae is more precisely called Deneb el Okab Borealis, because is situated to the north of Zeta Aquilae, which can therefore be called Deneb el Okab Australis. The primary component of this system is an evolved giant star with a stellar classification of K1 III. It has more than double the mass of the Sun and has expanded to ten times the Sun's radius. It shines with 54–fold the Sun's luminosity, which is being radiated from its outer envelope at an effective temperature of 4,760 K. At this heat, it glows with the orange-hue of a K-type star. This has been designated a barium star, meaning its atmosphere is extremely enriched with barium and other heavy elements. However, this is disputed, with astronomer Andrew McWilliam (1990) finding normal abundances from an s-process.".
- Epsilon_Aquilae thumbnail Aquila_IAU.svg?width=300.
- Epsilon_Aquilae wikiPageExternalLink AladinPreview?-c=*+eps+Aql&ident=*+eps+Aql&submit=Aladin+previewer.
- Epsilon_Aquilae wikiPageExternalLink denebokabb.html.
- Epsilon_Aquilae wikiPageID "2866094".
- Epsilon_Aquilae wikiPageLength "9085".
- Epsilon_Aquilae wikiPageOutDegree "46".
- Epsilon_Aquilae wikiPageRevisionID "660091849".
- Epsilon_Aquilae wikiPageWikiLink 19_Capricorni.
- Epsilon_Aquilae wikiPageWikiLink Andrew_McWilliam.
- Epsilon_Aquilae wikiPageWikiLink Apparent_magnitude.
- Epsilon_Aquilae wikiPageWikiLink Aquila_(constellation).
- Epsilon_Aquilae wikiPageWikiLink Arabic.
- Epsilon_Aquilae wikiPageWikiLink Barium.
- Epsilon_Aquilae wikiPageWikiLink Barium_star.
- Epsilon_Aquilae wikiPageWikiLink Bayer_designation.
- Epsilon_Aquilae wikiPageWikiLink Binary_star.
- Epsilon_Aquilae wikiPageWikiLink Bright_Star_Catalogue.
- Epsilon_Aquilae wikiPageWikiLink Category:Aquila_(constellation).
- Epsilon_Aquilae wikiPageWikiLink Category:Bayer_objects.
- Epsilon_Aquilae wikiPageWikiLink Category:Binary_stars.
- Epsilon_Aquilae wikiPageWikiLink Category:Henry_Draper_Catalogue_objects.
- Epsilon_Aquilae wikiPageWikiLink Category:K-type_giants.
- Epsilon_Aquilae wikiPageWikiLink Category:Spectroscopic_binaries.
- Epsilon_Aquilae wikiPageWikiLink Category:Stars_with_proper_names.
- Epsilon_Aquilae wikiPageWikiLink Celestial_equator.
- Epsilon_Aquilae wikiPageWikiLink Constellation.
- Epsilon_Aquilae wikiPageWikiLink Durchmusterung.
- Epsilon_Aquilae wikiPageWikiLink Earth.
- Epsilon_Aquilae wikiPageWikiLink Effective_temperature.
- Epsilon_Aquilae wikiPageWikiLink Giant_star.
- Epsilon_Aquilae wikiPageWikiLink Girl_(Chinese_constellation).
- Epsilon_Aquilae wikiPageWikiLink Henry_Draper_Catalogue.
- Epsilon_Aquilae wikiPageWikiLink Hipparcos.
- Epsilon_Aquilae wikiPageWikiLink Minute_and_second_of_arc.
- Epsilon_Aquilae wikiPageWikiLink Orbital_eccentricity.
- Epsilon_Aquilae wikiPageWikiLink Orbital_period.
- Epsilon_Aquilae wikiPageWikiLink Parallax.
- Epsilon_Aquilae wikiPageWikiLink S-process.
- Epsilon_Aquilae wikiPageWikiLink Smithsonian_Astrophysical_Observatory_Star_Catalog.
- Epsilon_Aquilae wikiPageWikiLink Standard_Chinese.
- Epsilon_Aquilae wikiPageWikiLink Stellar_atmosphere.
- Epsilon_Aquilae wikiPageWikiLink Stellar_classification.
- Epsilon_Aquilae wikiPageWikiLink Stellar_evolution.
- Epsilon_Aquilae wikiPageWikiLink Wu_(state).
- Epsilon_Aquilae wikiPageWikiLink Yangtze.
- Epsilon_Aquilae wikiPageWikiLink Yue_(state).
- Epsilon_Aquilae wikiPageWikiLink Zeta_Aquilae.
- Epsilon_Aquilae wikiPageWikiLink Zhejiang.
- Epsilon_Aquilae wikiPageWikiLink File:Aquila_IAU.svg.
- Epsilon_Aquilae wikiPageWikiLink File:Cercle_rouge_100%25.svg.
- Epsilon_Aquilae wikiPageWikiLinkText "Epsilon Aquilae".
- Epsilon_Aquilae wikiPageWikiLinkText "ε Aql".
- Epsilon_Aquilae wikiPageWikiLinkText "ε Aquilae".
- Epsilon_Aquilae absmagBol "+0.30".
- Epsilon_Aquilae appmagV "4.02".
- Epsilon_Aquilae bV "+1.08".
- Epsilon_Aquilae class "K1 III".
- Epsilon_Aquilae component "ε Aql A".
- Epsilon_Aquilae component "ε Aql B".
- Epsilon_Aquilae constell Aquila_(constellation).
- Epsilon_Aquilae epoch "J2000".
- Epsilon_Aquilae gravity "2.91".
- Epsilon_Aquilae metalFe "0".
- Epsilon_Aquilae pError "0.7".
- Epsilon_Aquilae parallax "21.05".
- Epsilon_Aquilae propMoDec "–72.36".
- Epsilon_Aquilae propMoRa "–50.75".
- Epsilon_Aquilae rI "0.52".
- Epsilon_Aquilae radialV "–48".
- Epsilon_Aquilae rotationalVelocity "4.4".
- Epsilon_Aquilae uB "+1.04".
- Epsilon_Aquilae wikiPageUsesTemplate Template:Convert.
- Epsilon_Aquilae wikiPageUsesTemplate Template:DEC.
- Epsilon_Aquilae wikiPageUsesTemplate Template:RA.
- Epsilon_Aquilae wikiPageUsesTemplate Template:Reflist.
- Epsilon_Aquilae wikiPageUsesTemplate Template:Starbox_astrometry.
- Epsilon_Aquilae wikiPageUsesTemplate Template:Starbox_begin.
- Epsilon_Aquilae wikiPageUsesTemplate Template:Starbox_catalog.
- Epsilon_Aquilae wikiPageUsesTemplate Template:Starbox_character.
- Epsilon_Aquilae wikiPageUsesTemplate Template:Starbox_detail.
- Epsilon_Aquilae wikiPageUsesTemplate Template:Starbox_end.
- Epsilon_Aquilae wikiPageUsesTemplate Template:Starbox_image.
- Epsilon_Aquilae wikiPageUsesTemplate Template:Starbox_observe.
- Epsilon_Aquilae wikiPageUsesTemplate Template:Starbox_sources.
- Epsilon_Aquilae wikiPageUsesTemplate Template:Stars_of_Aquila.
- Epsilon_Aquilae wikiPageUsesTemplate Template:Val.
- Epsilon_Aquilae subject Category:Aquila_(constellation).
- Epsilon_Aquilae subject Category:Bayer_objects.
- Epsilon_Aquilae subject Category:Binary_stars.
- Epsilon_Aquilae subject Category:Henry_Draper_Catalogue_objects.
- Epsilon_Aquilae subject Category:K-type_giants.
- Epsilon_Aquilae subject Category:Spectroscopic_binaries.
- Epsilon_Aquilae subject Category:Stars_with_proper_names.
- Epsilon_Aquilae hypernym Designation.
- Epsilon_Aquilae type CelestialBody.
- Epsilon_Aquilae type Place.
- Epsilon_Aquilae type Star.
- Epsilon_Aquilae type Catalogue.
- Epsilon_Aquilae type Location.