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31 Cygni, also known as ο1 Cygni, Omicron1 Cygni, or V695 Cygni, is a triple star system about 750 light years away in the constellation Cygnus. The Bayer designation ο (omicron) has been variously applied to two or three of the stars 30, 31, and 32 Cygni. 31 Cygni has been designated, variously, as ο1 or ο2 Cygni — therefore for clarity, it is preferred to use the Flamsteed designation 31 Cygni. 30 Cygni is another naked eye star a tenth of a degree away, forming a bright triple.

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  • 31 Cygni (en)
  • Ómicron1 Cygni (es)
  • Omicron1 Cygni (it)
  • Omicron1 Cygni (fr)
  • Omicron1 Cygni (pt)
  • 31 Cygni (sv)
  • 天鵝座31 (zh)
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  • Omicron1 Cygni, appelée également 31 Cygni ou V695 Cygni, est une étoile de la constellation du Cygne. C'est une binaire à éclipses de type Algol, sa luminosité varie entre les magnitudes 3,73 et 3,89 sur une période de dix ans ; les deux composantes sont une supergéante orange de type spectral K4Iab et une étoile bleue-blanche probablement en train de quitter la séquence principale avec un type spectral B4IV-V. (fr)
  • Omicron1 Cygni (ο1 Cygni, ο1 Cyg/31 Cygni, 31 Cyg/V695 Cygni) è un sistema stellare della costellazione del Cigno distante circa 600 anni luce dal sistema solare. (it)
  • Omicron1 Cygni (31 Cygni) é uma estrela na direção da constelação de Cygnus. Possui uma ascensão reta de 20h 13m 37.90s e uma declinação de +46° 44′ 28.8″. Sua magnitude aparente é igual a 3.80. Considerando sua distância de 1353 anos-luz em relação à Terra, sua magnitude absoluta é igual a −4.29. Pertence à classe espectral K2II+.... É uma estrela variável algol. (pt)
  • 天鵝座31(天鵝座ο1),又名BD+46 2882,HD 192577、SAO 49337、HR 7735,是天鵝座的一颗恒星,视星等为3.79,位于銀經82.68,銀緯6.78,其B1900.0坐标为赤經20h 10m 28.9s,赤緯+46° 6.78′ 16″。 (zh)
  • 31 Cygni, also known as ο1 Cygni, Omicron1 Cygni, or V695 Cygni, is a triple star system about 750 light years away in the constellation Cygnus. The Bayer designation ο (omicron) has been variously applied to two or three of the stars 30, 31, and 32 Cygni. 31 Cygni has been designated, variously, as ο1 or ο2 Cygni — therefore for clarity, it is preferred to use the Flamsteed designation 31 Cygni. 30 Cygni is another naked eye star a tenth of a degree away, forming a bright triple. (en)
  • Ómicron1 Cygni (ο1 Cyg / 31 Cygni / V695 Cygni)​​ es una estrella variable en la constelación del Cisne de magnitud aparente media +3,79. Comparte la denominación de Bayer «Ómicron» con ο2 Cygni, si bien no existe relación física entre las dos estrellas. Ómicron1 Cygni se encuentra probablemente a unos 600 años luz de distancia del Sistema Solar. (es)
  • Omikron1 Cygni eller 31 Cygni, som är stjärnans Flamsteed-beteckning, är en dubbelstjärna belägen i den mellersta delen av stjärnbilden Svanen, som också har Bayer-beteckningen o1 Cygni och variabelbeteckningen V695 Cygni. Den har en genomsnittlig skenbar magnitud på ca 3,80 och är synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 4,3 mas, beräknas den befinna sig på ett avstånd på ca 750 ljusår (ca 230 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet av ca -7,5 km/s. (sv)
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  • 31 Cygni (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Cygnus_constellation_map.svg
  • http://commons.wikimedia.org/wiki/Special:FilePath/V695CygLightCurve.png
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