About: HD 118889

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HD 118889 is a binary star system in the northern constellation of Boötes. It is faintly visible to the naked eye as a point of light with an apparent visual magnitude of 5.57. The system is located at a distance of approximately 196 light years from the Sun based on stellar parallax, but is drifting closer with a radial velocity of −26 km/s.

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  • HD 118889 is a binary star system in the northern constellation of Boötes. It is faintly visible to the naked eye as a point of light with an apparent visual magnitude of 5.57. The system is located at a distance of approximately 196 light years from the Sun based on stellar parallax, but is drifting closer with a radial velocity of −26 km/s. The binary components of this system were first measured by S. W. Burnham in 1878 and it was given the discovery code BU 612. The pair are orbiting each other with a period of 22.46 years with an eccentricity (ovalness) of 0.545. The primary component is a magnitude 6.35 star with a stellar classification of F0V, matching an F-type main-sequence star. It is an estimated 718 million years old and is spinning rapidly with a projected rotational velocity of 144 km/s. The star has 1.4–1.9 times the mass of the Sun. The secondary is slightly fainter at magnitude 6.47. (en)
  • HD 118889 è una stella bianco-gialla nella sequenza principale di magnitudine 5,58 situata nella costellazione di Boote. Dista 175 anni luce dal sistema solare. (it)
  • HD 118889 är en gulvit stjärna i huvudserien i Björnvaktarens stjärnbild. Stjärnan har visuell magnitud +5,58 och är svagt synlig för blotta ögat vid normal seeing. (sv)
  • HD 118889，又名BD+11 2589，SAO 100654、HR 5138，是一颗恒星，视星等为5.57，位于銀經339.9，銀緯70.08，其B1900.0坐标为赤經13h 34m 38.7s，赤緯+11° 70.08′ 15″。 (zh)
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dbp:absmagV
  • +2.40 (en)
dbp:ageMyr
  • 718 (xsd:integer)
dbp:appmagV
  • 5.570000 (xsd:double)
  • (en)
dbp:bV
  • +0.33 (en)
dbp:class
  • F0V (en)
dbp:component
  • A (en)
dbp:constell
dbp:epoch
  • J2000 (en)
dbp:gravity
  • 3.970000 (xsd:double)
dbp:luminosity
  • 18.500000 (xsd:double)
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  • 1.410000 (xsd:double)
dbp:pError
  • 0.580000 (xsd:double)
dbp:parallax
  • 16.670000 (xsd:double)
dbp:periastron
  • B (en)
dbp:propMoDec
  • −11.74 (en)
dbp:propMoRa
  • −114.96 (en)
dbp:rotationalVelocity
  • 144 (xsd:integer)
dbp:type
  • Main sequence (en)
dbp:uB
  • +0.045 (en)
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rdfs:comment
  • HD 118889 è una stella bianco-gialla nella sequenza principale di magnitudine 5,58 situata nella costellazione di Boote. Dista 175 anni luce dal sistema solare. (it)
  • HD 118889 är en gulvit stjärna i huvudserien i Björnvaktarens stjärnbild. Stjärnan har visuell magnitud +5,58 och är svagt synlig för blotta ögat vid normal seeing. (sv)
  • HD 118889，又名BD+11 2589，SAO 100654、HR 5138，是一颗恒星，视星等为5.57，位于銀經339.9，銀緯70.08，其B1900.0坐标为赤經13h 34m 38.7s，赤緯+11° 70.08′ 15″。 (zh)
  • HD 118889 is a binary star system in the northern constellation of Boötes. It is faintly visible to the naked eye as a point of light with an apparent visual magnitude of 5.57. The system is located at a distance of approximately 196 light years from the Sun based on stellar parallax, but is drifting closer with a radial velocity of −26 km/s. (en)
rdfs:label
  • HD 118889 (en)
  • HD 118889 (it)
  • HD 118889 (sv)
  • HD 118889 (zh)
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