About: 47 Ophiuchi

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47 Ophiuchi (47 Oph) is a binary star in the constellation Serpens. The combined apparent magnitude of the system is 4.54. The system is located about 98.1 light-years, or 30.1 parsecs away, based on its parallax as measured by Hipparcos. The designation 47 Ophiuchi was originally used for the star HR 6496. However, when constellation borders were redrawn, the star fell into the constellation Serpens, and the designation became used for this star, HR 6493, instead.

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  • 47 Ophiuchi (47 Oph) is a binary star in the constellation Serpens. The combined apparent magnitude of the system is 4.54. The system is located about 98.1 light-years, or 30.1 parsecs away, based on its parallax as measured by Hipparcos. 47 Ophiuchi is a spectroscopic binary: that is, the two stars move fast enough that periodic Doppler shifts in the stars' spectra can be detected. In this case, the two stars have also been resolved using interferometry. The primary star is an F-type main-sequence star, that is 1.5 times the mass of the Sun and around twice as wide. Its companion star is 1.34 times the mass of the Sun, and 1.36 times the radius of the Sun. The two stars orbit each other every 26.3 days, and its orbital eccentricity is 0.481. The designation 47 Ophiuchi was originally used for the star HR 6496. However, when constellation borders were redrawn, the star fell into the constellation Serpens, and the designation became used for this star, HR 6493, instead. (en)
  • 47 Ophiuchi är en gulvit stjärna i huvudserien i stjärnbilden Ormen. Trots sin Flamsteed-beteckning tillhör den inte Ormbärarens stjärnbild. Den ligger på gränsen mellan stjärnbilderna och fick byta tillhörighet vid översynen av gränser mellan stjärnbilderna år 1930 och benämns efter bytet av stjärnbild ofta med sin HD-beteckning, HD 143553. 47 Ophiuchi har visuell magnitud +4,54 och är synlig för blotta ögat vid normal seeing. Den befinner sig på ett avstånd av ungefär 100 ljusår. (sv)
  • HD 157950,又名BD-04 4275,SAO 141665、HR 6493,是一颗恒星,视星等为4.54,位于銀經18.26,銀緯16.27,其B1900.0坐标为赤經17h 21m 19.4s,赤緯-4° 16.27′ 54″。 (zh)
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  • (en)
  • JD 2448103.380 ± 0.026 (en)
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  • 47 Ophiuchi är en gulvit stjärna i huvudserien i stjärnbilden Ormen. Trots sin Flamsteed-beteckning tillhör den inte Ormbärarens stjärnbild. Den ligger på gränsen mellan stjärnbilderna och fick byta tillhörighet vid översynen av gränser mellan stjärnbilderna år 1930 och benämns efter bytet av stjärnbild ofta med sin HD-beteckning, HD 143553. 47 Ophiuchi har visuell magnitud +4,54 och är synlig för blotta ögat vid normal seeing. Den befinner sig på ett avstånd av ungefär 100 ljusår. (sv)
  • HD 157950,又名BD-04 4275,SAO 141665、HR 6493,是一颗恒星,视星等为4.54,位于銀經18.26,銀緯16.27,其B1900.0坐标为赤經17h 21m 19.4s,赤緯-4° 16.27′ 54″。 (zh)
  • 47 Ophiuchi (47 Oph) is a binary star in the constellation Serpens. The combined apparent magnitude of the system is 4.54. The system is located about 98.1 light-years, or 30.1 parsecs away, based on its parallax as measured by Hipparcos. The designation 47 Ophiuchi was originally used for the star HR 6496. However, when constellation borders were redrawn, the star fell into the constellation Serpens, and the designation became used for this star, HR 6493, instead. (en)
rdfs:label
  • 47 Ophiuchi (en)
  • 47 Ophiuchi (sv)
  • HD 157950 (zh)
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  • 47 Ophiuchi (en)
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