About: HD 175740   Goto Sponge  NotDistinct  Permalink

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HD 175740 is a single star in the northern constellation of Lyra. This object has an orange hue and is dimly visible to the naked eye with an apparent visual magnitude of 5.46. It is located at a distance of approximately 266 light years from the Sun based on parallax, and has an absolute magnitude of 0.89. The star is drifting closer with a radial velocity of −9.5 km/s, and is predicted to come as close as 31.7 light-years in around 8 million years.

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  • HD 175740
  • HD 175740
  • HD 175740
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  • HD 175740 är en ensam stjärna belägen i den mellersta delen av stjärnbilden Lyran. Den har en skenbar magnitud av ca 5,46 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 12,2 mas, beräknas den befinna sig på ett avstånd på ca 266 ljusår (ca 82 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -10 km/s och beräknas ligga så nära jorden som 31,7 ljusår om ca 8 miljoner år.
  • HD 175740 is a single star in the northern constellation of Lyra. This object has an orange hue and is dimly visible to the naked eye with an apparent visual magnitude of 5.46. It is located at a distance of approximately 266 light years from the Sun based on parallax, and has an absolute magnitude of 0.89. The star is drifting closer with a radial velocity of −9.5 km/s, and is predicted to come as close as 31.7 light-years in around 8 million years.
  • HD 175740,又名BD+41 3177,SAO 47909、HR 7146,是一颗恒星,视星等为5.44,位于銀經71.49,銀緯17.03,其B1900.0坐标为赤經18h 51m 40s,赤緯+41° 17.03′ 28″。
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http://purl.org/li...ics/gold/hypernym
dbo:abstract
  • HD 175740 är en ensam stjärna belägen i den mellersta delen av stjärnbilden Lyran. Den har en skenbar magnitud av ca 5,46 och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 12,2 mas, beräknas den befinna sig på ett avstånd på ca 266 ljusår (ca 82 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -10 km/s och beräknas ligga så nära jorden som 31,7 ljusår om ca 8 miljoner år.
  • HD 175740 is a single star in the northern constellation of Lyra. This object has an orange hue and is dimly visible to the naked eye with an apparent visual magnitude of 5.46. It is located at a distance of approximately 266 light years from the Sun based on parallax, and has an absolute magnitude of 0.89. The star is drifting closer with a radial velocity of −9.5 km/s, and is predicted to come as close as 31.7 light-years in around 8 million years. This is an aging giant star with a stellar classification of K0III, having evolving off the main sequence after the supply of hydrogen at its core was exhausted. It is an estimated 4.78 billion years old with 1.39 times the mass of the Sun, although Bailer-Jones et al. (2018) give a higher estimate of 2.8 times the Sun's mass. The elemental composition of this star has made it the first giant to be a candidate solar sibling, suggesting it may have been born in the same star cluster as the Sun. It has expanded to ten times the girth of the Sun and is radiating 50 times the Sun's luminosity from its photosphere at an effective temperature of 4,811 K. HD 175740 has a magnitude 12.6 visual companion, located at an angular separation of 8.4″ along a position angle (PA) of 300°, as of 2013. A magnitude 11.5 companion lies at a separation of 24.1″ along a PA of 39°, as of 2014. Both were discovered by American astronomer G. W. Hough in 1887.
  • HD 175740,又名BD+41 3177,SAO 47909、HR 7146,是一颗恒星,视星等为5.44,位于銀經71.49,銀緯17.03,其B1900.0坐标为赤經18h 51m 40s,赤緯+41° 17.03′ 28″。
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  • K0III
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  • −2.234
dbp:propMoRa
  • −2.059
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