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- Beta_Herculis abstract "Beta Herculis (Beta Her, β Herculis, β Her), which has the traditional name Kornephoros, is the brightest star in the northern constellation of Hercules at a base apparent visual magnitude of 2.81. This is a suspected variable star with an apparent magnitude that may rise as high as 2.76. Based upon parallax measurements, it is located at a distance of 139 light-years (43 parsecs) from Earth.Although β Herculis appears to the naked eye to be a single star, in July 1899 the American astronomer W. W. Campbell discovered from spectroscopic measurements that its radial velocity varies, and concluded that it is a binary system. An orbit for the binary was computed in 1908 based upon additional spectroscopic measurements.At Palomar Observatory, Antoine Labeyrie and others used speckle interferometry with the Hale Telescope to resolve the system in 1977. The Hipparcos satellite observed the orbital motion of the primary relative to other stars, and an orbit was computed in 2005 using spectroscopic data together with these measurements. The period of the system is around 410 days. They have a high orbital eccentricity of 0.55 and the orbital plane is inclined 53.8° to the line of sight from the Earth.The primary star in this binary system has a stellar classification of G7 IIIa, indicating that it is a giant star that has exhausted the hydrogen at its core and evolved away from the main sequence. It has a mass nearly three times the mass of the Sun, and has expanded to 17 times the Sun's radius. The effective temperature of the star's outer envelope is about 4,887 K, which gives it the yellow hue of a G-type star. The secondary star has a mass only 90% that of the Sun.".
- Beta_Herculis thumbnail Hercules_IAU.svg?width=300.
- Beta_Herculis wikiPageID "3116538".
- Beta_Herculis wikiPageRevisionID "605911329".
- Beta_Herculis absmagV "−0.49 ± 0.10".
- Beta_Herculis appmagV "2.81".
- Beta_Herculis bV "+0.91".
- Beta_Herculis class "G7 IIIa".
- Beta_Herculis component "A".
- Beta_Herculis component "B".
- Beta_Herculis constell Hercules_(constellation).
- Beta_Herculis eccentricity "0.55".
- Beta_Herculis epoch Epoch_(astronomy).
- Beta_Herculis equinox "J2000.0".
- Beta_Herculis gravity "2.5".
- Beta_Herculis hasPhotoCollection Beta_Herculis.
- Beta_Herculis luminosity "151".
- Beta_Herculis mass "0.9".
- Beta_Herculis mass "2.9".
- Beta_Herculis metalFe "–0.27".
- Beta_Herculis pError "0.58".
- Beta_Herculis parallax "23.44".
- Beta_Herculis periargPrimary "24.6".
- Beta_Herculis periastron "15500.4".
- Beta_Herculis periodUnitless "3.547584E7".
- Beta_Herculis propMoDec "−15.39".
- Beta_Herculis propMoRa "−99.15".
- Beta_Herculis rI "+0.47".
- Beta_Herculis radialV "−25.5".
- Beta_Herculis radius "17".
- Beta_Herculis rotationalVelocity "3".
- Beta_Herculis temperature "4887".
- Beta_Herculis uB "+0.70".
- Beta_Herculis subject Category:Bayer_objects.
- Beta_Herculis subject Category:Binary_stars.
- Beta_Herculis subject Category:Durchmusterung_objects.
- Beta_Herculis subject Category:Flamsteed_objects.
- Beta_Herculis subject Category:G-type_giants.
- Beta_Herculis subject Category:Henry_Draper_Catalogue_objects.
- Beta_Herculis subject Category:Hercules_(constellation).
- Beta_Herculis subject Category:Hipparcos_objects.
- Beta_Herculis subject Category:Stars_with_proper_names.
- Beta_Herculis subject Category:Triple_stars.
- Beta_Herculis type Animal100015388.
- Beta_Herculis type BayerObjects.
- Beta_Herculis type BinaryStar109221070.
- Beta_Herculis type BinaryStars.
- Beta_Herculis type CelestialBody109239740.
- Beta_Herculis type DurchmusterungObjects.
- Beta_Herculis type FlamsteedObjects.
- Beta_Herculis type G-typeGiants.
- Beta_Herculis type Giant101323781.
- Beta_Herculis type HIPObjects.
- Beta_Herculis type HenryDraperCatalogueObjects.
- Beta_Herculis type LivingThing100004258.
- Beta_Herculis type NaturalObject100019128.
- Beta_Herculis type Object100002684.
- Beta_Herculis type Organism100004475.
- Beta_Herculis type PhysicalEntity100001930.
- Beta_Herculis type Star109444100.
- Beta_Herculis type StarsWithProperNames.
- Beta_Herculis type TripleStars.
- Beta_Herculis type Whole100003553.
- Beta_Herculis type CelestialBody.
- Beta_Herculis type Star.
- Beta_Herculis type PhysicalBody.
- Beta_Herculis comment "Beta Herculis (Beta Her, β Herculis, β Her), which has the traditional name Kornephoros, is the brightest star in the northern constellation of Hercules at a base apparent visual magnitude of 2.81. This is a suspected variable star with an apparent magnitude that may rise as high as 2.76.".
- Beta_Herculis label "Beta Herculis".
- Beta_Herculis label "Beta Herculis".
- Beta_Herculis label "Beta Herculis".
- Beta_Herculis label "Beta Herculis".
- Beta_Herculis label "Beta Herculis".
- Beta_Herculis label "Korneforos".
- Beta_Herculis label "Kornephoros".
- Beta_Herculis label "Kornephoros".
- Beta_Herculis label "Бета Геркулеса".
- Beta_Herculis label "ヘルクレス座ベータ星".
- Beta_Herculis label "天市右垣一".
- Beta_Herculis sameAs Beta_Herculis.
- Beta_Herculis sameAs Kornephoros.
- Beta_Herculis sameAs Beta_Herculis.
- Beta_Herculis sameAs Beta_Herculis.
- Beta_Herculis sameAs Beta_Herculis.
- Beta_Herculis sameAs ヘルクレス座ベータ星.
- Beta_Herculis sameAs Kornephoros.
- Beta_Herculis sameAs Korneforos.
- Beta_Herculis sameAs Beta_Herculis.
- Beta_Herculis sameAs m.08sh0y.
- Beta_Herculis sameAs Q13337.
- Beta_Herculis sameAs Q13337.
- Beta_Herculis sameAs Beta_Herculis.
- Beta_Herculis wasDerivedFrom Beta_Herculis?oldid=605911329.
- Beta_Herculis depiction Hercules_IAU.svg.
- Beta_Herculis isPrimaryTopicOf Beta_Herculis.
- Beta_Herculis name "β Herculis".