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74 Cygni is a visual binary star system in the northern constellation Cygnus, located around 249 light years distant from the Sun. It is visible to the naked eye as a faint, white-hued star with a combined apparent visual magnitude of 5.04. The pair orbit each other with a period of 1.57 years and an eccentricity of 0.5. The system is a source of X-ray emission, which is most likely coming from the secondary component.

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  • 74 Cygni (en)
  • 74 Cygni (sv)
  • 車府七 (zh)
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  • 74 Cygni, som är stjärnans Flamsteed-beteckning, är en visuell dubbelstjärna belägen i den mellersta delen av stjärnbilden Svanen. Den har en skenbar magnitud på ca 5,04 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 13,1 mas, beräknas den befinna sig på ett avstånd på ca 249 ljusår (ca 76 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet av ca 5 km/s. (sv)
  • 天鵝座74(车府七),又名BD+39 4612,HD 205835、SAO 51101、HR 8266,是天鵝座的一颗恒星,视星等为5.01,位于銀經87.62,銀緯-8.76,其B1900.0坐标为赤經21h 32m 56.3s,赤緯+39° -8.76′ 51″。 (zh)
  • 74 Cygni is a visual binary star system in the northern constellation Cygnus, located around 249 light years distant from the Sun. It is visible to the naked eye as a faint, white-hued star with a combined apparent visual magnitude of 5.04. The pair orbit each other with a period of 1.57 years and an eccentricity of 0.5. The system is a source of X-ray emission, which is most likely coming from the secondary component. (en)
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  • 74 Cygni (en)
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absmag v
age myr
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  • A3 Vn (en)
component
constell
epoch
  • J2000 (en)
gravity
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parallax
prop mo dec
  • +18.399 (en)
prop mo ra
  • +2.270 (en)
radius
rotational velocity
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