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Upsilon Cygni, Latinized from υ Cygni, is a star in the northern constellation of Cygnus. It is visible to the naked eye, having an apparent visual magnitude of 4.43. Based upon an annual parallax shift of 5.08 mas, it lies at a distance of roughly 640 light years from the Sun. Upsilon Cygni holds 9.3 times the mass of the Sun and is 4.7 times the Sun's radius. The rapid rotation is giving the star an oblate shape with an equatorial bulge that is 18% wider than the polar radius. It is radiating 7,305 times the solar luminosity from its outer atmosphere at an effective temperature of 22,000 K.

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  • Upsilon Cygni (pt)
  • Upsilon Cygni (en)
  • Ypsilon Cygni (sv)
  • Ипсилон Лебедя (ru)
  • 天津七 (zh)
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  • Ypsilon Cygni, (υ Cygni, förkortat Ypsilon Cyg, υ Cyg), som är stjärnans Bayer-beteckning, är en ensam stjärna i den mellersta delen av stjärnbilden Svanen. Den har en genomsnittlig skenbar magnitud på +4,43 och är synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätningar i Hipparcos-uppdraget på ca 5,1 mas beräknas den befinna sig på ca 640 ljusårs (200 parsek) avstånd från solen. (sv)
  • Upsilon Cygni (66 Cygni) é uma estrela na direção da constelação de Cygnus. Possui uma ascensão reta de 21h 17m 55.07s e uma declinação de +34° 53′ 48.8″. Sua magnitude aparente é igual a 4.41. Considerando sua distância de 901 anos-luz em relação à Terra, sua magnitude absoluta é igual a −2.80. Pertence à classe espectral B2Vne. É uma estrela variável γ Cassiopeiae. (pt)
  • 天鵝座υ,又名BD+34 4371,HD 202904、SAO 71173、HR 8146,是天鵝座的一颗恒星,视星等为4.43,位于銀經80.98,銀緯-10.05,其B1900.0坐标为赤經21h 13m 48.3s,赤緯+34° -10.05′ 37″。 (zh)
  • Upsilon Cygni, Latinized from υ Cygni, is a star in the northern constellation of Cygnus. It is visible to the naked eye, having an apparent visual magnitude of 4.43. Based upon an annual parallax shift of 5.08 mas, it lies at a distance of roughly 640 light years from the Sun. Upsilon Cygni holds 9.3 times the mass of the Sun and is 4.7 times the Sun's radius. The rapid rotation is giving the star an oblate shape with an equatorial bulge that is 18% wider than the polar radius. It is radiating 7,305 times the solar luminosity from its outer atmosphere at an effective temperature of 22,000 K. (en)
  • Ипсилон Лебедя (лат. υ Cygni) — звезда в северном созвездии Лебедя. Доступна для наблюдения невооружённым глазом, видимая звёздная величина равна 4,43. На основе измеренного значения годичного параллакса, равного 5,08 мсд, получена оценка расстояния до объекта — приблизительно 640 световых лет от Солнца. Ипсилон Лебедя обладает массой 9,3 массы Солнца и радиусом 4,7 радиуса Солнца. Быстрое вращение придаёт звезде сплюснутую форму, радиус экватора звезды на 18% больше полярного радиуса. Светимость превышает солнечную в 7305 раз, эффективная температура внешней атмосферы равна 22000 K. (ru)
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  • Upsilon Cygni (en)
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