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Tau Cygni, Latinised from τ Cygni, is a binary star system in the constellation Cygnus, approximately 69 light years away from Earth. This visual binary system has a period of 49.6 years. The main star, 4th magnitude GJ 822.1 A, is a yellowish white subgiant star of the spectral type F2IV. It therefore has a surface temperature of 6,000 to 7,500 kelvins and is larger, hotter, and several times as bright as the Sun. Its companion, 6th magnitude GJ 822.1 B, is a yellow main sequence star of the spectral type G0V. It is similar to the Sun in size, surface temperature, and luminosity.

AttributesValues
rdf:type
rdfs:label
  • Tau Cygni (es)
  • Tau Cygni (fr)
  • Tau Cygni (it)
  • Tau Cygni (pt)
  • Тау Лебедя (ru)
  • Tau Cygni (en)
  • Tau Cygni (sv)
  • HD202444 (uk)
  • 天津六 (zh)
rdfs:comment
  • Tau Cygni (τ Cygni / 65 Cygni)​​ es una estrella múltiple en la constelación del Cisne de magnitud aparente +3,74.Se encuentra a 66,3 años luz del Sistema Solar.​ (es)
  • Tau Cygni (τ Cyg) est une étoile binaire de la constellation du Cygne, située à environ 69 années-lumière de la Terre. Ce système binaire visuel a une période orbitale de 49,6 ans. L'étoile principale GJ 822.1 A, de 4e magnitude, est une sous-géante jaune-blanche de type spectral F2IV. Elle a donc une température de surface de 6000 à 7500 kelvins et est plus grande, plus chaude et plusieurs fois plus lumineuse que notre Soleil. Sa compagne GJ 822.1 B, de 6e magnitude, est une naine jaune de type spectral G0V. Elle est similaire à notre Soleil en taille, température de surface et luminosité. (fr)
  • Tau Cygni (τ Cyg / τ Cygni) è un sistema stellare nella costellazione del Cigno, distante 66 anni luce dalla Terra. La magnitudine apparente del sistema è +3,73. (it)
  • Tau Cygni, (τ Cygni, förkortat Tau Cyg, τ Cyg), som är stjärnans Bayer-beteckning, är en dubbelstjärna i den mellersta delen av stjärnbilden Svanen. Den har en genomsnittlig skenbar magnitud på +3,80 och är synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätningar i Hipparcos-uppdraget på ca 49,2 mas beräknas den befinna sig på ca 68 ljusårs (21 parsek) avstånd från solen. (sv)
  • Tau Cygni (65 Cygni) é uma estrela múltipla na direção da constelação de Cygnus. Possui uma ascensão reta de 21h 14m 47.35s e uma declinação de +38° 02′ 39.6″. Sua magnitude aparente é igual a 3.74. Considerando sua distância de 68 anos-luz em relação à Terra, sua magnitude absoluta é igual a 2.14. Pertence à classe espectral F1IV. É uma estrela variável δ Scuti. (pt)
  • HD202444 — подвійна зоря. Ця подвійна система має видиму зоряну величину в смузі V приблизно 3,8.Вона розташована на відстані близько 68,2 світлових років від Сонця. (uk)
  • 天津六 (天鵝座τ)是在天鵝座的一對聯星，距離地球大約69光年。主星是4等的GJ 822.1 A，光譜類型為F2IV的黃白色次巨星，因此它的表面溫度在6,000至7,500K，比太陽更大和更熱，亮度則數倍於太陽。它的伴星，6等的GJ 822.1 B，是一顆黃色的主序星，光譜類型為G0V。它的大小、表面溫度和亮度都與我們的太陽相似。 (zh)
  • Tau Cygni, Latinised from τ Cygni, is a binary star system in the constellation Cygnus, approximately 69 light years away from Earth. This visual binary system has a period of 49.6 years. The main star, 4th magnitude GJ 822.1 A, is a yellowish white subgiant star of the spectral type F2IV. It therefore has a surface temperature of 6,000 to 7,500 kelvins and is larger, hotter, and several times as bright as the Sun. Its companion, 6th magnitude GJ 822.1 B, is a yellow main sequence star of the spectral type G0V. It is similar to the Sun in size, surface temperature, and luminosity. (en)
  • Тау Лебедя (τ Cyg, τ Cygni, τ Лебедя) — двойная звёздная система в созвездии Лебедя, на расстоянии 68 световых лет от Земли с периодом обращения 49,6 года. Компонентами системы являются жёлто-белый субгигант GJ 822.1 A со спектральным классом F2IV и жёлтая звезда главной последовательности GJ 822.1 B со спектральным классом G0V. Температура поверхности основного компонента составляет от 6000 до 7500 К. Он крупнее, горячее и в несколько раз ярче Солнца. Второй компонент по размерам, светимости и поверхностной температуре похож на Солнце. Видимые звёздные величины — 3.84 и 6.44 соответственно. (ru)
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  • τ Cygni (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Cygnus_constellation_map.svg
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