About: HD 196775

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

HD 196775 (HR 7899) is a solitary star in the equatorial constellation Delphinus. It has an apparent magnitude of 5.98, allowing it to be faintly seen with the naked eye. The object is relatively far at a distance of 1,050 light years but is approaching the Solar System with a heliocentric radial velocity of −4.6 km/s. HD 196775 has a high peculiar velocity of 21.8+1.9−4.1 km/s compared to neighboring stars, indicating that it may be a runaway star. HD 196775 has four faint optical companions whose parameters are listed below.

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dbo:abstract
  • HD 196775 (HR 7899) is a solitary star in the equatorial constellation Delphinus. It has an apparent magnitude of 5.98, allowing it to be faintly seen with the naked eye. The object is relatively far at a distance of 1,050 light years but is approaching the Solar System with a heliocentric radial velocity of −4.6 km/s. HD 196775 has a high peculiar velocity of 21.8+1.9−4.1 km/s compared to neighboring stars, indicating that it may be a runaway star. HD 196775 has a general stellar classification of B3 V, indicating that it is an ordinary B-type main-sequence star. However, once source gives it a class of B4 Vn, making it slightly cooler and having broad absorption lines due to rapid rotation. It has an angular diameter of 0.12 mas, yielding a radius 4.13 times that of the Sun. At present it has 7 times the mass of the Sun and shines at 1507 L☉ from its photosphere at an effective temperature of 18,100 K, giving it a whitish blue hue. HD 196775 is 36 million years old and is spining rapidly with a projected rotational velocity of 145 km/s. HD 196775 has four faint optical companions whose parameters are listed below. (en)
  • HD 196775，又名BD+15 4220，SAO 106347、HR 7899，是一颗海豚座的恒星，视星等为5.97，位于銀經60.16，銀緯-15.25，其B1900.0坐标为赤經20h 34m 26.6s，赤緯+15° -15.25′ 12″。 (zh)
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  • 9000 (xsd:nonNegativeInteger)
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  • 1090812578 (xsd:integer)
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dbp:absmagV
  • −2.05 (en)
dbp:ageMyr
  • 36.100000 (xsd:double)
dbp:appmagV
  • 5.980000 (xsd:double)
dbp:bV
  • −0.16 (en)
dbp:class
  • B3 V (en)
dbp:constell
dbp:epoch
  • J2000.0 (en)
dbp:gravity
  • 3.970000 (xsd:double)
dbp:luminosity
  • 1507 (xsd:integer)
dbp:mass
  • 7 (xsd:integer)
dbp:pError
  • 0.061700 (xsd:double)
dbp:parallax
  • 3.121100 (xsd:double)
dbp:propMoDec
  • −15.290 (en)
dbp:propMoRa
  • −0.868 (en)
dbp:radialV
  • −4.6 (en)
dbp:radius
  • 4.130000 (xsd:double)
dbp:rotationalVelocity
  • 145 (xsd:integer)
dbp:temperature
  • 18100 (xsd:integer)
dbp:uB
  • −0.71 (en)
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  • HD 196775，又名BD+15 4220，SAO 106347、HR 7899，是一颗海豚座的恒星，视星等为5.97，位于銀經60.16，銀緯-15.25，其B1900.0坐标为赤經20h 34m 26.6s，赤緯+15° -15.25′ 12″。 (zh)
  • HD 196775 (HR 7899) is a solitary star in the equatorial constellation Delphinus. It has an apparent magnitude of 5.98, allowing it to be faintly seen with the naked eye. The object is relatively far at a distance of 1,050 light years but is approaching the Solar System with a heliocentric radial velocity of −4.6 km/s. HD 196775 has a high peculiar velocity of 21.8+1.9−4.1 km/s compared to neighboring stars, indicating that it may be a runaway star. HD 196775 has four faint optical companions whose parameters are listed below. (en)
rdfs:label
  • HD 196775 (en)
  • 瓠瓜增六 (zh)
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  • HD196775 (en)
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