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- Eta_Draconis abstract "Eta Draconis (η Dra, η Draconis) is a star in the northern circumpolar constellation of Draco. Despite having an apparent visual magnitude of only +2.73, it is the second brightest star in this generally faint constellation. Based upon parallax measurements collected during the Hipparcos mission, this star is located at a distance of about 92.1 light-years (28.2 parsecs) from Earth.Eta Draconis is a large star with 2.55 times the mass of the Sun. The spectrum matches a stellar classification of G8 III, with the luminosity class III indicating this is an evolved giant star that has exhausted the supply of hydrogen at its core. It reached this stage in only 550 million years because higher mass stars such as this consume the supply of hydrogen more rapidly than the Sun. The measured angular diameter of this star, after correction for limb darkening, is 3.72 ± 0.07 mas. At the estimated distance of Eta Draconis, this yields a physical size of about 11 times the radius of the Sun. From its extended envelope, it is radiating around 60 times the luminosity of the Sun at an effective temperature of 5,055 K, giving it the yellow glow of a G-type star.A nearby stellar companion is located at an angular separation of 5.1 arcseconds from Eta Draconis. This is an 8.8 magnitude K-type main sequence star with a stellar classification of K2 V. At the estimated distance of this star system, the two stars are separated by a physical distance of at least 140 AU and require at least a millennium to complete an orbit.".
- Eta_Draconis thumbnail Draco_IAU.svg?width=300.
- Eta_Draconis wikiPageID "10377341".
- Eta_Draconis wikiPageRevisionID "601977986".
- Eta_Draconis absmagV "+0.58".
- Eta_Draconis ageMyr "550".
- Eta_Draconis appmagV "+2.73".
- Eta_Draconis bV "+0.91".
- Eta_Draconis class "G8 III".
- Eta_Draconis constell Draco_(constellation).
- Eta_Draconis epoch Epoch_(astronomy).
- Eta_Draconis gravity "2.82".
- Eta_Draconis hasPhotoCollection Eta_Draconis.
- Eta_Draconis luminosity "60".
- Eta_Draconis mass "2.55".
- Eta_Draconis metalFe "–0.04".
- Eta_Draconis pError "0.09".
- Eta_Draconis parallax "35.42".
- Eta_Draconis propMoDec "+56.95".
- Eta_Draconis propMoRa "–17.02".
- Eta_Draconis radialV "–14.3".
- Eta_Draconis radius "11".
- Eta_Draconis rotationalVelocity "8".
- Eta_Draconis temperature "5055".
- Eta_Draconis uB "+0.70".
- Eta_Draconis subject Category:Bayer_objects.
- Eta_Draconis subject Category:Draco_(constellation).
- Eta_Draconis type BayerObjects.
- Eta_Draconis type Object100002684.
- Eta_Draconis type PhysicalEntity100001930.
- Eta_Draconis type CelestialBody.
- Eta_Draconis type Star.
- Eta_Draconis type PhysicalBody.
- Eta_Draconis comment "Eta Draconis (η Dra, η Draconis) is a star in the northern circumpolar constellation of Draco. Despite having an apparent visual magnitude of only +2.73, it is the second brightest star in this generally faint constellation. Based upon parallax measurements collected during the Hipparcos mission, this star is located at a distance of about 92.1 light-years (28.2 parsecs) from Earth.Eta Draconis is a large star with 2.55 times the mass of the Sun.".
- Eta_Draconis label "Al Dhibain Prior".
- Eta_Draconis label "Aldhibain".
- Eta_Draconis label "Eta Draconis".
- Eta_Draconis label "Eta Draconis".
- Eta_Draconis label "Eta Draconis".
- Eta_Draconis label "Eta Draconis".
- Eta_Draconis label "りゅう座イータ星".
- Eta_Draconis label "少宰 (恆星)".
- Eta_Draconis sameAs Aldhibain.
- Eta_Draconis sameAs Eta_Draconis.
- Eta_Draconis sameAs Eta_Draconis.
- Eta_Draconis sameAs Al_Dhibain_Prior.
- Eta_Draconis sameAs りゅう座イータ星.
- Eta_Draconis sameAs Eta_Draconis.
- Eta_Draconis sameAs Eta_Draconis.
- Eta_Draconis sameAs m.02q9w6q.
- Eta_Draconis sameAs Q2744137.
- Eta_Draconis sameAs Q2744137.
- Eta_Draconis sameAs Eta_Draconis.
- Eta_Draconis wasDerivedFrom Eta_Draconis?oldid=601977986.
- Eta_Draconis depiction Draco_IAU.svg.
- Eta_Draconis isPrimaryTopicOf Eta_Draconis.
- Eta_Draconis name "Eta Draconis".
