Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Alpha_Trianguli> ?p ?o }
- Alpha_Trianguli abstract "Alpha Trianguli (Alpha Tri, α Trianguli, α Tri) is the Bayer designation for a binary star in the constellation Triangulum. It has the traditional names Ras al Muthallah (or Mothallah) and Caput Trianguli.Estimates of the combined stellar classification for this system range from F5III to F6IV, with the luminosity class of 'IV' or 'III' indicating the primary component is a subgiant or giant star, respectively. It is a member of a close binary system—a spectroscopic binary—whose components complete an orbit about their center of mass once every 1.736 days. Because the primary star is rotating rapidly, it has assumed the shape of an oblate spheroid. The ellipsoidal profile of the star, as viewed from Earth, varies over the course of an orbit causing the luminosity to vary in magnitude during the same period. Such stars are termed ellipsoidal variables. Within a few million years, as the primary continues to evolve into a red giant star, the system may become a semi-detached binary with the Roche lobe becoming filled to overflowing.The mean apparent magnitude of +3.42 for this pair is bright enough to be readily seen with the naked eye. It forms the second brightest star or star system in this generally faint constellation, following Beta Trianguli. Parallax measurements place this system at a distance of 63.3 light-years (19.4 parsecs) from the Earth. The effective temperature of the primary's outer envelope is 6,288 K, giving it a yellow-white hue typical of F-type stars. It has a mean radius about three times the radius of the Sun. The system is an estimated 1.6 billion years old.".
- Alpha_Trianguli thumbnail Triangulum_IAU.svg?width=300.
- Alpha_Trianguli wikiPageExternalLink mothallah.html.
- Alpha_Trianguli wikiPageID "2695828".
- Alpha_Trianguli wikiPageLength "9958".
- Alpha_Trianguli wikiPageOutDegree "41".
- Alpha_Trianguli wikiPageRevisionID "698849447".
- Alpha_Trianguli wikiPageWikiLink Apparent_magnitude.
- Alpha_Trianguli wikiPageWikiLink Arabic.
- Alpha_Trianguli wikiPageWikiLink Bayer_designation.
- Alpha_Trianguli wikiPageWikiLink Beta_Trianguli.
- Alpha_Trianguli wikiPageWikiLink Binary_star.
- Alpha_Trianguli wikiPageWikiLink Catalogues_of_Fundamental_Stars.
- Alpha_Trianguli wikiPageWikiLink Category:Bayer_objects.
- Alpha_Trianguli wikiPageWikiLink Category:F-type_subgiants.
- Alpha_Trianguli wikiPageWikiLink Category:Spectroscopic_binaries.
- Alpha_Trianguli wikiPageWikiLink Category:Stars_with_proper_names.
- Alpha_Trianguli wikiPageWikiLink Category:Triangulum_(constellation).
- Alpha_Trianguli wikiPageWikiLink Constellation.
- Alpha_Trianguli wikiPageWikiLink Earth.
- Alpha_Trianguli wikiPageWikiLink Effective_temperature.
- Alpha_Trianguli wikiPageWikiLink Ellipsoid.
- Alpha_Trianguli wikiPageWikiLink Epoch_(astronomy).
- Alpha_Trianguli wikiPageWikiLink Gamma_Andromedae.
- Alpha_Trianguli wikiPageWikiLink Giant_star.
- Alpha_Trianguli wikiPageWikiLink Henry_Draper_Catalogue.
- Alpha_Trianguli wikiPageWikiLink Hipparcos.
- Alpha_Trianguli wikiPageWikiLink List_of_stars_in_Triangulum.
- Alpha_Trianguli wikiPageWikiLink MUL.APIN.
- Alpha_Trianguli wikiPageWikiLink Parallax.
- Alpha_Trianguli wikiPageWikiLink Roche_lobe.
- Alpha_Trianguli wikiPageWikiLink Rotating_ellipsoidal_variable.
- Alpha_Trianguli wikiPageWikiLink Solar_radius.
- Alpha_Trianguli wikiPageWikiLink Spheroid.
- Alpha_Trianguli wikiPageWikiLink Star_catalogue.
- Alpha_Trianguli wikiPageWikiLink Stellar_classification.
- Alpha_Trianguli wikiPageWikiLink Subgiant.
- Alpha_Trianguli wikiPageWikiLink Triangulum.
- Alpha_Trianguli wikiPageWikiLink File:Cercle_rouge_100%25.svg.
- Alpha_Trianguli wikiPageWikiLink File:Triangulum_IAU.svg.
- Alpha_Trianguli wikiPageWikiLinkText "α Tri".
- Alpha_Trianguli wikiPageWikiLinkText "Alpha Trianguli".
- Alpha_Trianguli wikiPageWikiLinkText "Alpha".
- Alpha_Trianguli wikiPageWikiLinkText "Elmuthalleth".
- Alpha_Trianguli wikiPageWikiLinkText "Metallah".
- Alpha_Trianguli wikiPageWikiLinkText "Mothallah".
- Alpha_Trianguli wikiPageWikiLinkText "α Tri".
- Alpha_Trianguli wikiPageWikiLinkText "α Trianguli".
- Alpha_Trianguli absmagV "1.98".
- Alpha_Trianguli ageGyr "1.6".
- Alpha_Trianguli appmagV "+3.42".
- Alpha_Trianguli bV "+0.48".
- Alpha_Trianguli class "F5III to F6IV + M".
- Alpha_Trianguli component "α Tri A".
- Alpha_Trianguli component "α Tri B".
- Alpha_Trianguli constell Triangulum.
- Alpha_Trianguli epoch Epoch_(astronomy).
- Alpha_Trianguli gravity "3.91".
- Alpha_Trianguli mass "0.11".
- Alpha_Trianguli mass "1.7".
- Alpha_Trianguli metalFe "–0.09 to 0.00".
- Alpha_Trianguli pError "0.23".
- Alpha_Trianguli parallax "51.5".
- Alpha_Trianguli propMoDec "–234.24".
- Alpha_Trianguli propMoRa "10.82".
- Alpha_Trianguli radialV "–12.6".
- Alpha_Trianguli radius "3.22".
- Alpha_Trianguli rotationalVelocity "81.6".
- Alpha_Trianguli temperature "6288".
- Alpha_Trianguli uB "+0.06".
- Alpha_Trianguli variable Rotating_ellipsoidal_variable.
- Alpha_Trianguli wikiPageUsesTemplate Template:Citation.
- Alpha_Trianguli wikiPageUsesTemplate Template:Convert.
- Alpha_Trianguli wikiPageUsesTemplate Template:DEC.
- Alpha_Trianguli wikiPageUsesTemplate Template:Nearest_star_systems.
- Alpha_Trianguli wikiPageUsesTemplate Template:RA.
- Alpha_Trianguli wikiPageUsesTemplate Template:Reflist.
- Alpha_Trianguli wikiPageUsesTemplate Template:Starbox_astrometry.
- Alpha_Trianguli wikiPageUsesTemplate Template:Starbox_begin.
- Alpha_Trianguli wikiPageUsesTemplate Template:Starbox_catalog.
- Alpha_Trianguli wikiPageUsesTemplate Template:Starbox_character.
- Alpha_Trianguli wikiPageUsesTemplate Template:Starbox_detail.
- Alpha_Trianguli wikiPageUsesTemplate Template:Starbox_end.
- Alpha_Trianguli wikiPageUsesTemplate Template:Starbox_image.
- Alpha_Trianguli wikiPageUsesTemplate Template:Starbox_observe.
- Alpha_Trianguli wikiPageUsesTemplate Template:Stars_of_Triangulum.
- Alpha_Trianguli subject Category:Bayer_objects.
- Alpha_Trianguli subject Category:F-type_subgiants.
- Alpha_Trianguli subject Category:Spectroscopic_binaries.
- Alpha_Trianguli subject Category:Stars_with_proper_names.
- Alpha_Trianguli subject Category:Triangulum_(constellation).
- Alpha_Trianguli hypernym Designation.
- Alpha_Trianguli type CelestialBody.
- Alpha_Trianguli type Place.
- Alpha_Trianguli type Star.
- Alpha_Trianguli type Catalogue.
- Alpha_Trianguli type Location.
- Alpha_Trianguli type Place.
- Alpha_Trianguli type Thing.
- Alpha_Trianguli comment "Alpha Trianguli (Alpha Tri, α Trianguli, α Tri) is the Bayer designation for a binary star in the constellation Triangulum. It has the traditional names Ras al Muthallah (or Mothallah) and Caput Trianguli.Estimates of the combined stellar classification for this system range from F5III to F6IV, with the luminosity class of 'IV' or 'III' indicating the primary component is a subgiant or giant star, respectively.".