"13732"^^ . "HD 108257 ( eller HR 4732) \u00E4r en ensam stj\u00E4rna i den mellersta delen av stj\u00E4rnbilden Kentauren som ocks\u00E5 har Bayer-beteckningen G Centauri. Den har en skenbar magnitud av ca 4,82 och \u00E4r svagt synlig f\u00F6r blotta \u00F6gat d\u00E4r ljusf\u00F6roreningar ej f\u00F6rekommer. Baserat p\u00E5 parallaxm\u00E4tning inom Hipparcosuppdraget p\u00E5 ca 7,3 mas, ber\u00E4knas den befinna sig p\u00E5 ett avst\u00E5nd p\u00E5 ca 450 ljus\u00E5r (ca 137 parsek) fr\u00E5n solen. Den r\u00F6r sig bort fr\u00E5n solen med en heliocentrisk radialhastighet p\u00E5 ca 5 km/s och ing\u00E5r i gruppen Lower Centaurus Crux inom Scorpius-Centaurus-f\u00F6reningen med en gemensam \u00E5lder av ca 17 miljoner \u00E5r."@sv . . . . "G Centauri is a single star in the southern constellation of Centaurus. It is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of +4.82. This object is located approximately 450 light years from the Sun, based on parallax. It is a member of the Lower Centaurus\u2013Crux group of the Scorpius\u2013Centaurus association, with the former having an age of about 17 million years."@en . . "7.28"^^ . . . . . . . . "\u534A\u4EBA\u99AC\u5EA7G\uFF08G Centauri\uFF09\uFF0CHD 108257\uFF0C\u53C8\u540DCD-50 6975\uFF0CSAO 239948\u3001HR 4732\uFF0C\u662F\u4E00\u9897\u534A\u4EBA\u99AC\u5EA7\u7684\u6052\u661F\uFF0C\u89C6\u661F\u7B49\u4E3A4.82\uFF0C\u4F4D\u4E8E\u9280\u7D93298.98\uFF0C\u9280\u7DEF11.23\uFF0C\u5176B1900.0\u5750\u6807\u4E3A\u8D64\u7D9312h 21m 7.5s\uFF0C\u8D64\u7DEF-50\u00B0 11.23\u2032 47\u2033\u3002"@zh . . . . "\u221210.13"@en . . . "G Centauri"@en . . . . . . . . . "3.42"^^ . . . "1086530916"^^ . . . . . . "J2000"@en . . . . . . . "HD 108257 (G Centauri) \u00E9 uma estrela na constela\u00E7\u00E3o de Centaurus. Tem uma magnitude aparente visual de 4,81, indicando que pode ser vista a olho nu em locais com pouca polui\u00E7\u00E3o luminosa. Com base em medi\u00E7\u00F5es de paralaxe, est\u00E1 localizada a aproximadamente 450 anos-luz (137 parsecs) da Terra. A essa dist\u00E2ncia, sua magnitude aparente \u00E9 reduzida em 0,07 devido \u00E0 extin\u00E7\u00E3o causada por g\u00E1s e poeira. G Centauri \u00E9 uma estrela de classe B da sequ\u00EAncia principal com um tipo espectral de B3Vn, em que a nota\u00E7\u00E3o 'n' indica que suas linhas de absor\u00E7\u00E3o est\u00E3o largas e nebulosas devido a uma alta velocidade de rota\u00E7\u00E3o, de mais de 298 km/s. Tem uma massa equivalente a 5,4 massas solares e est\u00E1 brilhando com mais de 800 vezes a luminosidade solar. Sua fotosfera irradia essa energia a uma temperatura efetiva de 17 300 K, dando \u00E0 estrela a colora\u00E7\u00E3o azul-branca t\u00EDpica de estrelas de classe B. Sua idade, estimada a partir de modelos evolucion\u00E1rios, \u00E9 de 15,8 milh\u00F5es de anos. Esta estrela pertence ao subgrupo Centaurus Inferior-Crux da , a associa\u00E7\u00E3o OB mais pr\u00F3xima do Sol. J\u00E1 foi identificada como fonte de excesso de radia\u00E7\u00E3o infravermelha, o que indicaria a presen\u00E7a de um disco circunstelar ao seu redor, apesar de outras observa\u00E7\u00F5es contestarem isso. Tem uma estrela companheira \u00F3ptica de magnitude 13,2 a uma separa\u00E7\u00E3o de 19,5 segundos de arco, que pode estar relacionada fisicamente ao sistema. Outros autores listam G Centauri como estrela \u00FAnica."@pt . "4.82"^^ . . . . "7784"^^ . "HD 108257 (G Centauri) \u00E9 uma estrela na constela\u00E7\u00E3o de Centaurus. Tem uma magnitude aparente visual de 4,81, indicando que pode ser vista a olho nu em locais com pouca polui\u00E7\u00E3o luminosa. Com base em medi\u00E7\u00F5es de paralaxe, est\u00E1 localizada a aproximadamente 450 anos-luz (137 parsecs) da Terra. A essa dist\u00E2ncia, sua magnitude aparente \u00E9 reduzida em 0,07 devido \u00E0 extin\u00E7\u00E3o causada por g\u00E1s e poeira."@pt . . . "\u221230.66"@en . . "483.06"^^ . . "HD 108257 ( eller HR 4732) \u00E4r en ensam stj\u00E4rna i den mellersta delen av stj\u00E4rnbilden Kentauren som ocks\u00E5 har Bayer-beteckningen G Centauri. Den har en skenbar magnitud av ca 4,82 och \u00E4r svagt synlig f\u00F6r blotta \u00F6gat d\u00E4r ljusf\u00F6roreningar ej f\u00F6rekommer. Baserat p\u00E5 parallaxm\u00E4tning inom Hipparcosuppdraget p\u00E5 ca 7,3 mas, ber\u00E4knas den befinna sig p\u00E5 ett avst\u00E5nd p\u00E5 ca 450 ljus\u00E5r (ca 137 parsek) fr\u00E5n solen. Den r\u00F6r sig bort fr\u00E5n solen med en heliocentrisk radialhastighet p\u00E5 ca 5 km/s och ing\u00E5r i gruppen Lower Centaurus Crux inom Scorpius-Centaurus-f\u00F6reningen med en gemensam \u00E5lder av ca 17 miljoner \u00E5r."@sv . . "5172282"^^ . . . . . . . . "\u99AC\u5C3E\u4E00"@zh . . . . . . . . . "\u22120.87"@en . . . . . "B3V"@en . . . . . "HD 108257"@pt . . . "HD 108257"@sv . . . . . . "G Centauri is a single star in the southern constellation of Centaurus. It is visible to the naked eye as a faint, blue-white hued star with an apparent visual magnitude of +4.82. This object is located approximately 450 light years from the Sun, based on parallax. It is a member of the Lower Centaurus\u2013Crux group of the Scorpius\u2013Centaurus association, with the former having an age of about 17 million years. This object is a B-type main-sequence star with a stellar classification of B3V(n), where the 'n' indicates \"nebulous\" (broad) lines due to rapid rotation. It is around 16 million years old with a projected rotational velocity of up to 298 km/s. The star has six times the mass of the Sun and 3.4 times the Sun's radius. It is radiating 483 times the luminosity of the Sun from its photosphere at an effective temperature of 13,732 K. An infrared excess indicates a circumstellar disk of dust with a mean temperature of 50 K is orbiting the star at a separation of 717.8 AU."@en . . . . "0.24"^^ . . . . . "\u534A\u4EBA\u99AC\u5EA7G\uFF08G Centauri\uFF09\uFF0CHD 108257\uFF0C\u53C8\u540DCD-50 6975\uFF0CSAO 239948\u3001HR 4732\uFF0C\u662F\u4E00\u9897\u534A\u4EBA\u99AC\u5EA7\u7684\u6052\u661F\uFF0C\u89C6\u661F\u7B49\u4E3A4.82\uFF0C\u4F4D\u4E8E\u9280\u7D93298.98\uFF0C\u9280\u7DEF11.23\uFF0C\u5176B1900.0\u5750\u6807\u4E3A\u8D64\u7D9312h 21m 7.5s\uFF0C\u8D64\u7DEF-50\u00B0 11.23\u2032 47\u2033\u3002"@zh . .