HD 156411 b

HD 156411 b
Exoplaneta Estrelas com exoplanetas
Estrela mãe[1]
Estrela HD 156411
Constelação Ara
Ascensão reta 17h 19m 51,4s
Declinação -48° 32′ 57,5″
Magnitude aparente 6,67
Distância 179 ± 5 anos-luz
55 ± 1 pc
Tipo espectral F8IV/V[2]
Elementos orbitais[2]
Semieixo maior 1,88+0,03
−0,04 UA
Excentricidade 0,22 ± 0,08
Período orbital 842,2 ± 14,5 dias
Argumento do periastro 45+22
−14
Semi-amplitude 14,0 ± 0,8 m/s m/s
Características físicas[2]
Massa >0,74+0,05
−0,04 MJ
Descoberta[2]
Data da descoberta 2009
Descobridores Naef et al.
Método de detecção Espectroscopia Doppler (HARPS)
Estado da descoberta Publicada
Outras designações
HIP 84787 b

HD 156411 b é um planeta extrassolar que orbita a estrela de classe F HD 156411, localizada a aproximadamente 179 anos-luz da Terra na constelação de Ara. Foi descoberto em 2009 pelo HARPS usando o método da velocidade radial. É um gigante gasoso com uma massa mínima de 0,74 massas de Júpiter e orbita a estrela a uma distância média de 1,88 UA a cada 842,2 dias.[2]

Referências

  1. ↑ «SIMBAD query result - LTT 6896». Simbad. Centre de Données astronomiques de Strasbourg. Consultado em 8 de setembro de 2012 
  2. ↑ a b c d e Naef, D.; et al. (2010). «The HARPS search for southern extrasolar planets XXIII. 8 planetary companions to low-activity solar-type stars». Astronomy and Astrophysics. 523 (15). Bibcode:2010A&A...523A..15N. arXiv:1008.4600Acessível livremente. doi:10.1051/0004-6361/200913616 (web Preprint)

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