17 Cygni

17 Cygni (Combinado, componente A e componente B)
Dados observacionais ([[Época (astronomia)|]])
Constelação Cisne
Asc. reta 19h 46m 25.61s[1]
Declinação +33 °43' 39.6"[1]
Magnitude aparente +5.00 (A) e +8.56 (B)[1]
Características
Tipo espectral F5IV-V (A) e K6V (B)
Cor (U-B) +0.87
Cor (B-V) +0.47(A) e +1.04(B)[1]
Astrometria
Velocidade radial 4.2 km/seg(combinado) e 4.5 km/seg (B)[1]
Mov. próprio (AR) 0.444(combinado) e 0.443(B)[1]
Distância 68 [1] anos-luz
20.9 [1] pc
Magnitude absoluta +6.96(combinado), +3.40(A) e +6.96(B)[1]
Detalhes
Raio 1.10(A) e 0.76(B)[1] R☉
Luminosidade 3.93(combinado), 3.79(A) e 0.14(B)[1] L☉
Metalicidade 76%
Idade 2 bilhões e oitocentos milhões de anos
Outras denominações
Gliese (Gl) 767.1, Hipparcos Input Catalog (HIC) 97295, Smithsonian Astrophysical Observatory (SAO) 68827, Aitken Double Star (ADS) 12913, Hoffleit Bright Star (HR) 7534, Struve (STF) 2580, Woolley (Wo) 9670

17 Cygni é uma estrela dupla na direção da constelação de Cygnus. Calcula-se sua idade em 2 bilhões e 800 milhões de anos.[1] O sistema 17 Cygni tem 76% dos elementos pesados que há no sistema solar, e a origem deles é o componente B da estrela.[1]. A distância entre o Sol e 17 Cygni é de 68 anos-luz.[1]

Referências

  1. ↑ a b c d e f g h i j k l m n «17 Cygni». Stellar Database (em inglês). Consultado em 6 de janeiro de 2016 

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