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- Beta_Ophiuchi abstract "Beta Ophiuchi (β Oph, β Ophiuchi) is a star in the equatorial constellation of Ophiuchus. It has the traditional names Celbalrai, which comes from the Arabic كلب الراعي kalb al-rā‘ī meaning \"shepherd dog\". It is also called Cheleb, Kelb Alrai, or sometimes just Alrai. The apparent visual magnitude of this star is 2.7, which is readily visible to the naked eye even from urban skies. The distance to this star can be estimated using parallax measurements, yielding a value of 81.8 light-years (25.1 parsecs).This is a giant star with a stellar classification of K2 III. Although it is only 13% greater in mass than the Sun, it has reached a stage in its evolution where the atmosphere has expanded to about 12 times the Sun's radius and is radiating 63 times the luminosity of the Sun. Its outer envelope is relatively cool with an effective temperature of 4,467 K, giving it the orange hue typical of K-type stars. Like some other K-type giants, β Ophiuchi has been found to vary very slightly (0.02 magnitudes) in brightness.,Cebalrai is a member of the thin disk population. It is following a low eccentricity orbit through the Milky Way galaxy that carries it between a distance of 27.3–30.9 kly (8.4–9.5 kpc) from the Galactic Center and up to 0.62 kly (0.19 kpc) above or below the galactic plane.".
- Beta_Ophiuchi thumbnail Ophiuchus_IAU.svg?width=300.
- Beta_Ophiuchi wikiPageID "2108565".
- Beta_Ophiuchi wikiPageLength "9998".
- Beta_Ophiuchi wikiPageOutDegree "39".
- Beta_Ophiuchi wikiPageRevisionID "590761167".
- Beta_Ophiuchi wikiPageWikiLink Apparent_magnitude.
- Beta_Ophiuchi wikiPageWikiLink Arabic.
- Beta_Ophiuchi wikiPageWikiLink Beta_Ophiuchi.
- Beta_Ophiuchi wikiPageWikiLink Bortle_scale.
- Beta_Ophiuchi wikiPageWikiLink Bright_Star_Catalogue.
- Beta_Ophiuchi wikiPageWikiLink Catalogues_of_Fundamental_Stars.
- Beta_Ophiuchi wikiPageWikiLink Category:Bayer_objects.
- Beta_Ophiuchi wikiPageWikiLink Category:Flamsteed_objects.
- Beta_Ophiuchi wikiPageWikiLink Category:Hypothetical_planetary_systems.
- Beta_Ophiuchi wikiPageWikiLink Category:K-type_giants.
- Beta_Ophiuchi wikiPageWikiLink Category:Ophiuchus_(constellation).
- Beta_Ophiuchi wikiPageWikiLink Category:Stars_with_proper_names.
- Beta_Ophiuchi wikiPageWikiLink Celestial_equator.
- Beta_Ophiuchi wikiPageWikiLink Constellation.
- Beta_Ophiuchi wikiPageWikiLink Crater-class_cargo_ship.
- Beta_Ophiuchi wikiPageWikiLink Durchmusterung.
- Beta_Ophiuchi wikiPageWikiLink Effective_temperature.
- Beta_Ophiuchi wikiPageWikiLink Epoch_(astronomy).
- Beta_Ophiuchi wikiPageWikiLink Galactic_Center.
- Beta_Ophiuchi wikiPageWikiLink Galactic_plane.
- Beta_Ophiuchi wikiPageWikiLink Giant_star.
- Beta_Ophiuchi wikiPageWikiLink Glossary_of_astronomy.
- Beta_Ophiuchi wikiPageWikiLink Henry_Draper_Catalogue.
- Beta_Ophiuchi wikiPageWikiLink Hipparcos.
- Beta_Ophiuchi wikiPageWikiLink International_Celestial_Reference_System.
- Beta_Ophiuchi wikiPageWikiLink Milky_Way.
- Beta_Ophiuchi wikiPageWikiLink Ophiuchus.
- Beta_Ophiuchi wikiPageWikiLink Orbital_eccentricity.
- Beta_Ophiuchi wikiPageWikiLink Parallax.
- Beta_Ophiuchi wikiPageWikiLink Radial_velocity.
- Beta_Ophiuchi wikiPageWikiLink Smithsonian_Astrophysical_Observatory_Star_Catalog.
- Beta_Ophiuchi wikiPageWikiLink Star.
- Beta_Ophiuchi wikiPageWikiLink Stellar_classification.
- Beta_Ophiuchi wikiPageWikiLink Stellar_evolution.
- Beta_Ophiuchi wikiPageWikiLink USS_Cheleb_(AK-138).
- Beta_Ophiuchi wikiPageWikiLink United_States_Navy.
- Beta_Ophiuchi wikiPageWikiLink File:Cercle_rouge_100%25.svg.
- Beta_Ophiuchi wikiPageWikiLink File:Ophiuchus_IAU.svg.
- Beta_Ophiuchi wikiPageWikiLinkText "β Oph".
- Beta_Ophiuchi wikiPageWikiLinkText "Beta Ophiuchi".
- Beta_Ophiuchi wikiPageWikiLinkText "Cebalrai".
- Beta_Ophiuchi wikiPageWikiLinkText "Celbalrai".
- Beta_Ophiuchi wikiPageWikiLinkText "Cheleb".
- Beta_Ophiuchi wikiPageWikiLinkText "β Oph".
- Beta_Ophiuchi wikiPageWikiLinkText "β Ophiuchi".
- Beta_Ophiuchi absmagV "+0.77 ± 0.04".
- Beta_Ophiuchi ageGyr "3.82".
- Beta_Ophiuchi appmagV "2.749".
- Beta_Ophiuchi bV "+1.170".
- Beta_Ophiuchi class "K2 III".
- Beta_Ophiuchi constell Ophiuchus.
- Beta_Ophiuchi eccentricity "—".
- Beta_Ophiuchi epoch "J2000.0".
- Beta_Ophiuchi exoplanet Beta_Ophiuchi.
- Beta_Ophiuchi gravity "2.22".
- Beta_Ophiuchi luminosity "63.4".
- Beta_Ophiuchi mass "1.13".
- Beta_Ophiuchi mass "≥ 1".
- Beta_Ophiuchi metalFe "0.04".
- Beta_Ophiuchi name "proposed Beta Ophiuchi".
- Beta_Ophiuchi pError "0.17".
- Beta_Ophiuchi parallax "39.85".
- Beta_Ophiuchi period "142.3".
- Beta_Ophiuchi propMoDec "+159.34".
- Beta_Ophiuchi propMoRa "41.45".
- Beta_Ophiuchi radialV "–12.53".
- Beta_Ophiuchi radius "12.42".
- Beta_Ophiuchi rotationalVelocity "5.4".
- Beta_Ophiuchi semimajor "≥ 0.6".
- Beta_Ophiuchi temperature "4467".
- Beta_Ophiuchi uB "+1.253".
- Beta_Ophiuchi variable "K-type giant,".
- Beta_Ophiuchi wikiPageUsesTemplate Template:Citation_needed.
- Beta_Ophiuchi wikiPageUsesTemplate Template:Convert.
- Beta_Ophiuchi wikiPageUsesTemplate Template:DEC.
- Beta_Ophiuchi wikiPageUsesTemplate Template:OrbitboxPlanet_begin.
- Beta_Ophiuchi wikiPageUsesTemplate Template:OrbitboxPlanet_hypothetical.
- Beta_Ophiuchi wikiPageUsesTemplate Template:Orbitbox_end.
- Beta_Ophiuchi wikiPageUsesTemplate Template:RA.
- Beta_Ophiuchi wikiPageUsesTemplate Template:Reflist.
- Beta_Ophiuchi wikiPageUsesTemplate Template:Starbox_astrometry.
- Beta_Ophiuchi wikiPageUsesTemplate Template:Starbox_begin.
- Beta_Ophiuchi wikiPageUsesTemplate Template:Starbox_catalog.
- Beta_Ophiuchi wikiPageUsesTemplate Template:Starbox_character.
- Beta_Ophiuchi wikiPageUsesTemplate Template:Starbox_detail.
- Beta_Ophiuchi wikiPageUsesTemplate Template:Starbox_end.
- Beta_Ophiuchi wikiPageUsesTemplate Template:Starbox_image.
- Beta_Ophiuchi wikiPageUsesTemplate Template:Starbox_observe.
- Beta_Ophiuchi wikiPageUsesTemplate Template:Stars_of_Ophiuchus.
- Beta_Ophiuchi subject Category:Bayer_objects.
- Beta_Ophiuchi subject Category:Flamsteed_objects.
- Beta_Ophiuchi subject Category:Hypothetical_planetary_systems.
- Beta_Ophiuchi subject Category:K-type_giants.
- Beta_Ophiuchi subject Category:Ophiuchus_(constellation).