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Pi2 Cygni, Latinized from π2 Cygni, is a triple star system in the northern constellation of Cygnus. It is visible to the naked eye about 2.5° east-northeast of the open cluster M39, having an apparent visual magnitude of 4.24. Based upon an annual parallax shift of 2.95 mas, it is located at a distance of roughly 1,100 light years from the Sun. The third member of this system is a magnitude 5.98 star at an angular separation of 0.10 arc seconds along a position angle of 129°, as of 1996.

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  • Pi2 Cygni (in)
  • Pi2 Cygni (fr)
  • Pi2 Cygni (en)
  • Pi2 Cygni (pt)
  • Pi2 Cygni (sv)
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  • Pi² Cygni (π² Cyg / π² Cygni) adalah bintang bermagnitudo tingkat keempat di rasi Cygnus. Pi² Cygni merupakan bintang ganda dengan komponen utama, sebuah bintang raksasa biru berkelas B3 (blue giant) dengan magnitudo +4.23 dengan kecemerlangan 2,200 kali Matahari. Bintang ini berada pada 1156 tahun cahaya dari Bumi. (in)
  • Pi2 Cygni (π2 Cyg, π2 Cygni) est une étoile triple de 4e magnitude de la constellation du Cygne, située à environ 1156 années-lumière de la Terre. (fr)
  • Pi2 Cygni (π2 Cygni, förkortat Pi2 Cyg, π2 Cyg) som är stjärnans Bayerbeteckning, är en trippelstjärna belägen i den nordöstra delen av stjärnbilden Svanen (stjärnbild) ca 2,5° östnordöst om den öppna stjärnhopen M39. Den har en kombinerad skenbar magnitud på 4,24 och är synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 2,9 mas, beräknas den befinna sig på ett avstånd på ca 1 100 ljusår (ca 340 parsek) från solen. (sv)
  • Pi2 Cygni (Pennae Caudalis, Sama al Azrak, 81 Cygni) é uma estrela na direção da constelação de Cygnus. Possui uma ascensão reta de 21h 46m 47.61s e uma declinação de +49° 18′ 34.5″. Sua magnitude aparente é igual a 4.23. Considerando sua distância de 1156 anos-luz em relação à Terra, sua magnitude absoluta é igual a −3.52. Pertence à classe espectral B3III. (pt)
  • Pi2 Cygni, Latinized from π2 Cygni, is a triple star system in the northern constellation of Cygnus. It is visible to the naked eye about 2.5° east-northeast of the open cluster M39, having an apparent visual magnitude of 4.24. Based upon an annual parallax shift of 2.95 mas, it is located at a distance of roughly 1,100 light years from the Sun. The third member of this system is a magnitude 5.98 star at an angular separation of 0.10 arc seconds along a position angle of 129°, as of 1996. (en)
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  • Pi2 Cygni (en)
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