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• Zeta_Herculis abstract "Zeta Herculis (ζ Her, ζ Herculis) is a multiple star system in the constellation Hercules. It has a combined apparent visual magnitude of 2.81, which is readily visible to the naked eye. Parallax measurements put it at a distance of about 35.0 light-years (10.7 parsecs) from Earth.The primary member is a subgiant star that is somewhat larger than the Sun and has just begun to evolve away from the main sequence as the supply of hydrogen at its core becomes exhausted. It is orbited by a smaller companion star at a mean angular separation of 1.5 arcseconds, which corresponds to a physical separation of about 15 Astronomical Units. This distance is large enough so that the two stars do not have a significant tidal effect on each other. The stars orbit each other over a period of 34.45 years, with a semi-major axis of 1.33" and an eccentricity of 0.46.Component A has a stellar classification of F9 IV. It has about 2.6 times the radius of the Sun and 1.45 times the Sun's mass. This star is radiating more than six times the luminosity of the Sun at an effective temperature of 5,820 K. The secondary component is about the same size and mass as the Sun, with an effective temperature of 5,300 K. Both stars are rotating slowly. There may be a faint third member of this system, although little is known about it.This system forms part of the Zeta Herculis moving group of stars. This group includes: φ2 Pavonis, ζ Reticuli, 1 Hydrae, Gl 456, Gl 678, and Gl 9079.".
• Zeta_Herculis thumbnail Hercules_IAU.svg?width=300.
• Zeta_Herculis wikiPageExternalLink bibobj?2005A%26A...433..151Z&HD+150680.
• Zeta_Herculis wikiPageExternalLink zetaher.html.
• Zeta_Herculis wikiPageExternalLink 4c01326.htm.
• Zeta_Herculis wikiPageID "6144651".
• Zeta_Herculis wikiPageRevisionID "605911348".
• Zeta_Herculis absmagV "2.65".
• Zeta_Herculis ageGyr "6.2".
• Zeta_Herculis appmagV "2.81".
• Zeta_Herculis axis "1.33".
• Zeta_Herculis bV "+0.65".
• Zeta_Herculis component "ζ Her A".
• Zeta_Herculis component "ζ Her B".
• Zeta_Herculis constell Hercules_(constellation).
• Zeta_Herculis eccentricity "0.46".
• Zeta_Herculis epoch "J2000".
• Zeta_Herculis gravity "3.4".
• Zeta_Herculis hasPhotoCollection Zeta_Herculis.
• Zeta_Herculis inclination "131".
• Zeta_Herculis node "50".
• Zeta_Herculis pError "0.47".
• Zeta_Herculis parallax "93.32".
• Zeta_Herculis periarg "111".
• Zeta_Herculis periastron "1967.7".
• Zeta_Herculis period "34.45".
• Zeta_Herculis propMoDec "+342.28".
• Zeta_Herculis propMoRa "–461.52".
• Zeta_Herculis radialV "–68.43".
• Zeta_Herculis radius "0.915".
• Zeta_Herculis radius "2.56".
• Zeta_Herculis rotation "1.08558144E9".
• Zeta_Herculis rotationalVelocity "4.8".
• Zeta_Herculis uB "+0.21".
• Zeta_Herculis variable "Suspected".
• Zeta_Herculis subject Category:Bayer_objects.
• Zeta_Herculis subject Category:Binary_stars.
• Zeta_Herculis subject Category:F-type_subgiants.
• Zeta_Herculis subject Category:Flamsteed_objects.
• Zeta_Herculis subject Category:G-type_main-sequence_stars.
• Zeta_Herculis subject Category:Gliese_and_GJ_objects.
• Zeta_Herculis subject Category:HR_objects.
• Zeta_Herculis subject Category:Henry_Draper_Catalogue_objects.
• Zeta_Herculis subject Category:Hercules_(constellation).
• Zeta_Herculis subject Category:Hipparcos_objects.
• Zeta_Herculis subject Category:Objects_within_100_ly_of_Earth.
• Zeta_Herculis subject Category:Solar-type_stars.
• Zeta_Herculis type BayerObjects.
• Zeta_Herculis type BinaryStar109221070.
• Zeta_Herculis type BinaryStars.
• Zeta_Herculis type CelestialBody109239740.
• Zeta_Herculis type FlamsteedObjects.
• Zeta_Herculis type HIPObjects.
• Zeta_Herculis type HRObjects.
• Zeta_Herculis type HenryDraperCatalogueObjects.
• Zeta_Herculis type K-typeMainSequenceStars.
• Zeta_Herculis type NaturalObject100019128.
• Zeta_Herculis type Object100002684.
• Zeta_Herculis type PhysicalEntity100001930.
• Zeta_Herculis type Star109444100.
• Zeta_Herculis type Whole100003553.
• Zeta_Herculis type CelestialBody.
• Zeta_Herculis type Star.
• Zeta_Herculis type PhysicalBody.
• Zeta_Herculis comment "Zeta Herculis (ζ Her, ζ Herculis) is a multiple star system in the constellation Hercules. It has a combined apparent visual magnitude of 2.81, which is readily visible to the naked eye. Parallax measurements put it at a distance of about 35.0 light-years (10.7 parsecs) from Earth.The primary member is a subgiant star that is somewhat larger than the Sun and has just begun to evolve away from the main sequence as the supply of hydrogen at its core becomes exhausted.".
• Zeta_Herculis label "Zeta Herculis".
• Zeta_Herculis label "Zeta Herculis".
• Zeta_Herculis label "Zeta Herculis".
• Zeta_Herculis label "Zeta Herculis".
• Zeta_Herculis label "Zeta Herculis".
• Zeta_Herculis label "Zeta Herculis".
• Zeta_Herculis label "Дзета Геркулеса".
• Zeta_Herculis label "天纪二".
• Zeta_Herculis sameAs Zeta_Herculis.
• Zeta_Herculis sameAs Zeta_Herculis.
• Zeta_Herculis sameAs Zeta_Herculis.
• Zeta_Herculis sameAs Zeta_Herculis.
• Zeta_Herculis sameAs 허큘리스자리_제타.
• Zeta_Herculis sameAs Zeta_Herculis.
• Zeta_Herculis sameAs Zeta_Herculis.
• Zeta_Herculis sameAs m.0fsh14.
• Zeta_Herculis sameAs Q13341.
• Zeta_Herculis sameAs Q13341.
• Zeta_Herculis sameAs Zeta_Herculis.
• Zeta_Herculis wasDerivedFrom Zeta_Herculis?oldid=605911348.
• Zeta_Herculis depiction Hercules_IAU.svg.
• Zeta_Herculis isPrimaryTopicOf Zeta_Herculis.
• Zeta_Herculis name "Zeta Herculis A/B".