| dbo:abstract |
Upsilon1 Cassiopeiae (υ1 Cassiopeiae) is an astrometric binary star system in the northern constellation of Cassiopeia. It is visible to the naked eye with an apparent visual magnitude of 4.82. Based upon an annual parallax shift of 9.93 mas as seen from Earth, this system is located about 330 light years from the Sun. The visible component is an evolved K-type giant star with a stellar classification of K2 III. With an estimated age of 4.75 billion years, it is a red clump star that is generating energy through the fusion of helium at its core. The measured angular diameter, after correction for limb darkening, is 1.97±0.02 mas. At the estimated distance of the star, this yields a physical size of about 21 times the radius of the Sun. It has 1.39 times the mass of the Sun and is radiating 174 times the Sun's luminosity from its expanded photosphere at an effective temperature of 4,422 K. There is a magnitude 12.50 visual companion at an angular separation of 17.80 arc seconds along a position angle of 61°, as of 2003. A more distant magnitude 12.89 companion lies at a separation of 93.30 arc seconds along a position angle of 125°, as measured in 2003. Neither star appears to be physically associated with υ1 Cas. (en) Upsilon1 Cassiopeiae (26 Cassiopeiae) é uma estrela na direção da constelação de Cassiopeia. Possui uma ascensão reta de 00h 55m 00.19s e uma declinação de +58° 58′ 22.1″. Sua magnitude aparente é igual a 4.83. Considerando sua distância de 406 anos-luz em relação à Terra, sua magnitude absoluta é igual a −0.65. Pertence à classe espectral K2III. (pt) Ypsilon1 Cassiopeiae (υ1 Cassiopeiae , förkortat Ypsilon1 Cas, υ1 Cas) som är stjärnans Bayerbeteckning, är en visuell dubbelstjärna belägen i mellersta delen av stjärnbilden Cassiopeja. Den har en skenbar magnitud på 4,82 och är svagt synlig för blotta ögat. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 10 mas, beräknas den befinna sig på ett avstånd av ca 330 ljusår (101 parsek) från solen. (sv) 仙后座υ，又名BD+58 134，HD 5234、SAO 21832、HR 253，是仙后座的一颗恒星，视星等为4.83，位于銀經123.39，銀緯-3.9，其B1900.0坐标为赤經0h 49m 3.7s，赤緯+58° -3.9′ 53″。 (zh) |
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| rdfs:comment |
Upsilon1 Cassiopeiae (26 Cassiopeiae) é uma estrela na direção da constelação de Cassiopeia. Possui uma ascensão reta de 00h 55m 00.19s e uma declinação de +58° 58′ 22.1″. Sua magnitude aparente é igual a 4.83. Considerando sua distância de 406 anos-luz em relação à Terra, sua magnitude absoluta é igual a −0.65. Pertence à classe espectral K2III. (pt) Ypsilon1 Cassiopeiae (υ1 Cassiopeiae , förkortat Ypsilon1 Cas, υ1 Cas) som är stjärnans Bayerbeteckning, är en visuell dubbelstjärna belägen i mellersta delen av stjärnbilden Cassiopeja. Den har en skenbar magnitud på 4,82 och är svagt synlig för blotta ögat. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 10 mas, beräknas den befinna sig på ett avstånd av ca 330 ljusår (101 parsek) från solen. (sv) 仙后座υ，又名BD+58 134，HD 5234、SAO 21832、HR 253，是仙后座的一颗恒星，视星等为4.83，位于銀經123.39，銀緯-3.9，其B1900.0坐标为赤經0h 49m 3.7s，赤緯+58° -3.9′ 53″。 (zh) Upsilon1 Cassiopeiae (υ1 Cassiopeiae) is an astrometric binary star system in the northern constellation of Cassiopeia. It is visible to the naked eye with an apparent visual magnitude of 4.82. Based upon an annual parallax shift of 9.93 mas as seen from Earth, this system is located about 330 light years from the Sun. (en) |
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Upsilon1 Cassiopeiae (pt) Upsilon1 Cassiopeiae (en) Ypsilon1 Cassiopeiae (sv) 仙后座υ (zh) |
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