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About:HD 172044

An Entity of Type:star,from Named Graph:http://dbpedia.org,within Data Space:dbpedia.org

HD 172044 is a triple star system in the northern constellation of Lyra. It has a blue-white hue and is visible to the naked eye with an apparent visual magnitude of 5.41. The distance to the primary component is approximately 535 light years based on parallax. It is drifting closer with a radial velocity of −32.5 km/s, and is predicted to come as near as 77.3 light-years to the Sun some 4.5 million years from now.

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dbo:abstract
  • HD 172044 is a triple star system in the northern constellation of Lyra. It has a blue-white hue and is visible to the naked eye with an apparent visual magnitude of 5.41. The distance to the primary component is approximately 535 light years based on parallax. It is drifting closer with a radial velocity of −32.5 km/s, and is predicted to come as near as 77.3 light-years to the Sun some 4.5 million years from now. The dual nature of the primary star, component A, was announced in 1973 by H. A. Abt and . It is a single-lined spectroscopic binary with a preliminary orbital period of 4.59 years and an eccentricity (ovalness) of 0.16. The visible component is a B-type bright giant with a stellar classification of B8IIpHgMn, where the suffix notation indicates it is a chemically peculiar mercury-manganese star. Component B is a magnitude 9.40 companion of an unknown spectral type. It was first reported by F. G. W. Struve in 1830. As of 2016, it has an angular separation of 7.2 arcseconds along a position angle of 204° from the brighter component. (en)
  • HD 172044 och BD+33°3154B är en dubbelstjärna belägen i den mellersta delen av stjärnbilden Lyran. Den har en skenbar magnitud av ca 5,41 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 6,3 mas, beräknas den befinna sig på ett avstånd på ca 520 ljusår (ca 160 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -33 km/s. (sv)
  • HD 172044 e BD+33°3154B são dois componentes de um sistema estelar binário, na constelação de Lyra, a cerca de 520 anos-luz de distância da Terra. HD 172044 é uma estrela de magnitude 5, gigante ou subgigante com tipo espectral B8II-IIIp... O "p..." significa que a estrela tem um espectro peculiar e particularidades espectrais que ainda não foram descritas. É branca azulada e tem uma temperatura de superfície de 11.000 a 25.000 Kelvin. Por conseguinte, é pelo menos duas vezes mais quente que o Sol, na sua superfície, e muitas vezes mais brilhante e maior em tamanho. BD+33°3154B é uma estrela de magnitude 11 do tipo espectral desconhecido. (pt)
  • HD172044 — хімічно пекулярна зоря спектрального класуB8 й має видиму зоряну величину в смузі V приблизно 5,4.Вона розташована на відстані близько 521,9 світлових років від Сонця. (uk)
  • HD 172044,又名BD+33 3154,SAO 67164、HR 6997,是一颗恒星,视星等为5.42,位于銀經62.18,銀緯17.42,其B1900.0坐标为赤經18h 32m 57.2s,赤緯+33° 17.42′ 5″。 (zh)
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  • −0.53 (en)
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  • B8IIpHgMn (en)
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  • A (en)
  • B (en)
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  • 0.160000 (xsd:double)
dbp:epoch
  • J2000.0 (en)
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  • 3.900000 (xsd:double)
dbp:k
  • 3.200000 (xsd:double)
dbp:luminosity
  • 262.170000 (xsd:double)
dbp:metalFe
  • −0.25 (en)
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  • 0.089300 (xsd:double)
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  • 120 (xsd:integer)
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  • +0.479 (en)
  • +0.690 (en)
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  • −7.403 (en)
  • −7.966 (en)
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  • HD 172044 och BD+33°3154B är en dubbelstjärna belägen i den mellersta delen av stjärnbilden Lyran. Den har en skenbar magnitud av ca 5,41 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 6,3 mas, beräknas den befinna sig på ett avstånd på ca 520 ljusår (ca 160 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -33 km/s. (sv)
  • HD 172044 e BD+33°3154B são dois componentes de um sistema estelar binário, na constelação de Lyra, a cerca de 520 anos-luz de distância da Terra. HD 172044 é uma estrela de magnitude 5, gigante ou subgigante com tipo espectral B8II-IIIp... O "p..." significa que a estrela tem um espectro peculiar e particularidades espectrais que ainda não foram descritas. É branca azulada e tem uma temperatura de superfície de 11.000 a 25.000 Kelvin. Por conseguinte, é pelo menos duas vezes mais quente que o Sol, na sua superfície, e muitas vezes mais brilhante e maior em tamanho. BD+33°3154B é uma estrela de magnitude 11 do tipo espectral desconhecido. (pt)
  • HD172044 — хімічно пекулярна зоря спектрального класуB8 й має видиму зоряну величину в смузі V приблизно 5,4.Вона розташована на відстані близько 521,9 світлових років від Сонця. (uk)
  • HD 172044,又名BD+33 3154,SAO 67164、HR 6997,是一颗恒星,视星等为5.42,位于銀經62.18,銀緯17.42,其B1900.0坐标为赤經18h 32m 57.2s,赤緯+33° 17.42′ 5″。 (zh)
  • HD 172044 is a triple star system in the northern constellation of Lyra. It has a blue-white hue and is visible to the naked eye with an apparent visual magnitude of 5.41. The distance to the primary component is approximately 535 light years based on parallax. It is drifting closer with a radial velocity of −32.5 km/s, and is predicted to come as near as 77.3 light-years to the Sun some 4.5 million years from now. (en)
rdfs:label
  • HD 172044 (en)
  • HD 172044 (pt)
  • HD 172044 (sv)
  • HD 172044 (zh)
  • HD172044 (uk)
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