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About: 74 Cygni

An Entity of Type: star, from Named Graph: http://dbpedia.org, within Data Space: dbpedia.org

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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dbo:abstract
  • 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. The primary component is an A-type main-sequence star with a stellar classification of A3 Vn; a star that is fusing its core hydrogen. The 'n' suffix indicates "nebulous" absorption lines due to rapid rotation, with the star having a projected rotational velocity of 201 km/s. The high rate of spin is giving the star an oblate shape with an equatorial bulge that is 8% larger than the polar radius. The star has 1.68 times the mass of the Sun and is radiating 36 times the Sun's luminosity from its photosphere at an effective temperature of about 7,859 K. (en)
  • 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)
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  • A3 Vn (en)
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  • 74 (xsd:integer)
dbp:constell
dbp:epoch
  • J2000 (en)
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  • 3.890000 (xsd:double)
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  • +18.399 (en)
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  • +2.270 (en)
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dbp:type
  • main sequence (en)
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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)
rdfs:label
  • 74 Cygni (en)
  • 74 Cygni (sv)
  • 車府七 (zh)
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