| dbo:abstract |
HD 194012 (HR 7793; Gliese 789) is a star in the equatorial constellation Delphinus. It has an apparent magnitude of 6.15, making it visible to the naked eye under ideal conditions. The star is relatively close at a distance of only 85 light years but is receding with a heliocentric radial velocity of 4.5 km/s. HD 194012 has a stellar classification of F7 V, indicating that it is an ordinary F-type main-sequence star. It has 121% the mass of the Sun and is estimated to be a billion years old, spinning with a projected rotational velocity of 5 km/s. The star's diameter is 118% that of the Sun and shines with a luminosity of 1.9 L☉ from its photosphere at an effective temperature of 6,301 K, giving a yellow white hue. HD 194012's metallicity is calculated to be 87% that of the Sun. A 2010 paper has identified a candidate substellar companion 12.78″ away along a position angle of 67.9°. HD 194012 has been examined for infrared excess suggesting a debris disk but none was found. (en) HD 194012，又名BD+14 4275，SAO 106042、HR 7793，是一颗恒星，视星等为6.17，位于銀經56.82，銀緯-12.71，其B1900.0坐标为赤經20h 18m 12.4s，赤緯+14° -12.71′ 51″。 (zh) |
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dbr:Metallicity dbr:Delphinus dbr:Debris_disk dbr:Infrared_excess dbr:Stellar_classification dbc:Bright_Star_Catalogue_objects dbc:Delphinus_(constellation) dbc:Durchmusterung_objects dbc:F-type_main-sequence_stars dbc:Gliese_and_GJ_objects dbc:Henry_Draper_Catalogue_objects dbc:High-proper-motion_stars dbc:Hipparcos_objects dbr:Constellation dbr:Naked_eye dbr:Photosphere dbr:Effective_temperature dbr:Apparent_magnitude dbr:Light_year dbr:Luminosity dbr:Star dbr:Henry_Draper_Catalogue dbr:International_Celestial_Reference_System dbr:J2000.0 dbr:Billion_years dbr:Sun dbr:Position_angle dbr:Radial_velocity dbr:F-type_main-sequence_star dbr:Mass_of_the_Sun dbr:Projected_rotational_velocity |
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+4.06 (en) |
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F7 V (en) |
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dbr:Delphinus |
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J2000.0 (en) |
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1.210000 (xsd:double) |
| dbp:metalFe |
−0.06 (en) |
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0.023300 (xsd:double) |
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38.400900 (xsd:double) |
| dbp:propMoDec |
−7.143 (en) |
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| dbp:uB |
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| dct:subject |
dbc:Bright_Star_Catalogue_objects dbc:Delphinus_(constellation) dbc:Durchmusterung_objects dbc:F-type_main-sequence_stars dbc:Gliese_and_GJ_objects dbc:Henry_Draper_Catalogue_objects dbc:High-proper-motion_stars dbc:Hipparcos_objects |
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owl:Thing dbo:Place dbo:Location schema:Place dbo:CelestialBody dbo:Star |
| rdfs:comment |
HD 194012，又名BD+14 4275，SAO 106042、HR 7793，是一颗恒星，视星等为6.17，位于銀經56.82，銀緯-12.71，其B1900.0坐标为赤經20h 18m 12.4s，赤緯+14° -12.71′ 51″。 (zh) HD 194012 (HR 7793; Gliese 789) is a star in the equatorial constellation Delphinus. It has an apparent magnitude of 6.15, making it visible to the naked eye under ideal conditions. The star is relatively close at a distance of only 85 light years but is receding with a heliocentric radial velocity of 4.5 km/s. A 2010 paper has identified a candidate substellar companion 12.78″ away along a position angle of 67.9°. HD 194012 has been examined for infrared excess suggesting a debris disk but none was found. (en) |
| rdfs:label |
HD 194012 (en) HD 194012 (zh) |
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HD194012 (en) |
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