About: HD 124639

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

HD 124639 is a Be star in the southern constellation of Apus. It has an apparent visual magnitude of 6.42, which makes it a challenge to view with the naked eye even under the best viewing conditions. Based upon an annual parallax shift of 3.41 mas as seen from Earth, it is 956 light years from the Sun. At that distance, the visual magnitude of the star is diminished by an extinction of 0.17 due to interstellar dust. The star is moving further away with a heliocentric radial velocity of +27 km/s.

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  • HD 124639 is a Be star in the southern constellation of Apus. It has an apparent visual magnitude of 6.42, which makes it a challenge to view with the naked eye even under the best viewing conditions. Based upon an annual parallax shift of 3.41 mas as seen from Earth, it is 956 light years from the Sun. At that distance, the visual magnitude of the star is diminished by an extinction of 0.17 due to interstellar dust. The star is moving further away with a heliocentric radial velocity of +27 km/s. This is a B-type main-sequence star with a stellar classification of B8 Ve. The 'e' suffix indicates the presence of emission lines in the spectrum from ejected circumstellar material that is being heated by the host star. At the age of 126 million years, it has completed 96% of its lifespan on the main sequence. Levenhagen and Leister (2006) class it as a B9 IVe star, which would suggest it has already evolved into a subgiant star. HD 124639 is spinning rapidly with a projected rotational velocity of 237 km/s; the centrifugal force along the equator is equal to 56% of its surface gravity. The pole of the star is inclined by 70°±17° to the line-of-sight from the Earth. It has 4.4 times the mass of the Sun and is radiating 676 times the Sun's luminosity from its photosphere at an effective temperature of 12,700 K. (en)
  • HD 124639 är en ensam stjärna belägen i den södra delen av stjärnbilden Paradisfågeln. Den har en skenbar magnitud av ca 6,42 och kräver åtminstone en handkikare för att kunna observeras. Baserat på parallax enligt Gaia Data Release 2 på ca 3,4 mas, beräknas den befinna sig på ett avstånd på ca 956 ljusår (ca 293 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 27 km/s. På det beräknade avståndet minskar stjärnans skenbara magnitud med 0,17 enheter genom en skymningsfaktor orsakad av interstellärt stoft. (sv)
  • HD 124639,又名CP-82 601,SAO 258697、HR 5327,是一颗恒星,视星等为6.42,位于銀經305.94,銀緯-20.53,其B1900.0坐标为赤經14h 9m 35.1s,赤緯-82° -20.53′ 16″。 (zh)
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  • 1118537728 (xsd:integer)
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dbp:absmagV
  • −0.92 (en)
dbp:ageMyr
  • 126 (xsd:integer)
dbp:appmagV
  • 6.420000 (xsd:double)
dbp:bV
  • +0.02 (en)
dbp:class
  • B8 Ve or B9 IVe (en)
dbp:constell
dbp:epoch
  • J2000 (en)
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  • 0.033600 (xsd:double)
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  • 3.412700 (xsd:double)
dbp:propMoDec
  • −9.045 (en)
dbp:propMoRa
  • −15.391 (en)
dbp:uB
  • −0.33 (en)
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  • HD 124639 är en ensam stjärna belägen i den södra delen av stjärnbilden Paradisfågeln. Den har en skenbar magnitud av ca 6,42 och kräver åtminstone en handkikare för att kunna observeras. Baserat på parallax enligt Gaia Data Release 2 på ca 3,4 mas, beräknas den befinna sig på ett avstånd på ca 956 ljusår (ca 293 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 27 km/s. På det beräknade avståndet minskar stjärnans skenbara magnitud med 0,17 enheter genom en skymningsfaktor orsakad av interstellärt stoft. (sv)
  • HD 124639,又名CP-82 601,SAO 258697、HR 5327,是一颗恒星,视星等为6.42,位于銀經305.94,銀緯-20.53,其B1900.0坐标为赤經14h 9m 35.1s,赤緯-82° -20.53′ 16″。 (zh)
  • HD 124639 is a Be star in the southern constellation of Apus. It has an apparent visual magnitude of 6.42, which makes it a challenge to view with the naked eye even under the best viewing conditions. Based upon an annual parallax shift of 3.41 mas as seen from Earth, it is 956 light years from the Sun. At that distance, the visual magnitude of the star is diminished by an extinction of 0.17 due to interstellar dust. The star is moving further away with a heliocentric radial velocity of +27 km/s. (en)
rdfs:label
  • HD 124639 (en)
  • HD 124639 (sv)
  • HD 124639 (zh)
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  • HD 124639 (en)
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