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- Beta_Draconis abstract "Beta Draconis (β Draconis, β Dra) is the third brightest star in the northern circumpolar constellation of Draco. It has the traditional name Rastaban, which has also been used for Gamma Draconis. With an apparent visual magnitude of 2.79, it is bright enough to be easily seen with the naked eye. Based upon parallax measurements from the Hipparcos astrometry satellite, it lies at a distance of about 380 light-years (120 parsecs) from Earth.Compared to the Sun, this is an enormous star with six times the mass and roughly 40 times the radius. At this size, Beta Draconis is emitting about 950 times the luminosity of the Sun from its outer envelope at an effective temperature of 5,160 K, giving it the yellow hue of a G-type star. The spectrum matches a stellar classification of G2 Ib–IIa, with the luminosity class notation Ib–IIa indicating it lies part way between the bright giant and supergiant stages of its stellar evolution. It is about 67 million years old.This is a binary star system, with a binary star designation of ADS 10611, in which the supergiant is orbited by a dwarf companion once every four millennia or so.".
- Beta_Draconis thumbnail Draco_IAU.svg?width=300.
- Beta_Draconis wikiPageID "2212195".
- Beta_Draconis wikiPageRevisionID "601975982".
- Beta_Draconis absmagV "–2.28".
- Beta_Draconis ageMyr "65".
- Beta_Draconis appmagV "2.79".
- Beta_Draconis bV "+0.98".
- Beta_Draconis class "G2 Ib–IIa".
- Beta_Draconis constell Draco_(constellation).
- Beta_Draconis epoch Epoch_(astronomy).
- Beta_Draconis equinox "J2000.0".
- Beta_Draconis hasPhotoCollection Beta_Draconis.
- Beta_Draconis luminosity "1000".
- Beta_Draconis pError "0.1".
- Beta_Draconis parallax "8.58".
- Beta_Draconis propMoDec "+12.28".
- Beta_Draconis propMoRa "−15.89".
- Beta_Draconis rI "+0.48".
- Beta_Draconis radius "40".
- Beta_Draconis rotationalVelocity "13".
- Beta_Draconis uB "+0.64".
- Beta_Draconis subject Category:Bayer_objects.
- Beta_Draconis subject Category:Binary_stars.
- Beta_Draconis subject Category:Draco_(constellation).
- Beta_Draconis subject Category:Durchmusterung_objects.
- Beta_Draconis subject Category:Flamsteed_objects.
- Beta_Draconis subject Category:G-type_supergiants.
- Beta_Draconis subject Category:Henry_Draper_Catalogue_objects.
- Beta_Draconis subject Category:Hipparcos_objects.
- Beta_Draconis subject Category:Stars_with_proper_names.
- Beta_Draconis type BayerObjects.
- Beta_Draconis type BinaryStar109221070.
- Beta_Draconis type BinaryStars.
- Beta_Draconis type CelestialBody109239740.
- Beta_Draconis type DurchmusterungObjects.
- Beta_Draconis type FlamsteedObjects.
- Beta_Draconis type G-typeSupergiants.
- Beta_Draconis type HIPObjects.
- Beta_Draconis type HenryDraperCatalogueObjects.
- Beta_Draconis type NaturalObject100019128.
- Beta_Draconis type Object100002684.
- Beta_Draconis type PhysicalEntity100001930.
- Beta_Draconis type Star109444100.
- Beta_Draconis type StarsWithProperNames.
- Beta_Draconis type Supergiant109450708.
- Beta_Draconis type Whole100003553.
- Beta_Draconis type CelestialBody.
- Beta_Draconis type Star.
- Beta_Draconis type PhysicalBody.
- Beta_Draconis comment "Beta Draconis (β Draconis, β Dra) is the third brightest star in the northern circumpolar constellation of Draco. It has the traditional name Rastaban, which has also been used for Gamma Draconis. With an apparent visual magnitude of 2.79, it is bright enough to be easily seen with the naked eye.".
- Beta_Draconis label "Alwaid".
- Beta_Draconis label "Alwaid".
- Beta_Draconis label "Beta Draconis".
- Beta_Draconis label "Beta Draconis".
- Beta_Draconis label "Beta Draconis".
- Beta_Draconis label "Rastaban".
- Beta_Draconis label "Rastaban".
- Beta_Draconis label "رأس الثعبان (نجم)".
- Beta_Draconis label "天棓三".
- Beta_Draconis sameAs Alwaid.
- Beta_Draconis sameAs Alwaid.
- Beta_Draconis sameAs Ρασταμπάν.
- Beta_Draconis sameAs Alwaid.
- Beta_Draconis sameAs Beta_Draconis.
- Beta_Draconis sameAs Beta_Draconis.
- Beta_Draconis sameAs Rastaban.
- Beta_Draconis sameAs Rastaban.
- Beta_Draconis sameAs Beta_Draconis.
- Beta_Draconis sameAs m.06w934.
- Beta_Draconis sameAs Q1321897.
- Beta_Draconis sameAs Q1321897.
- Beta_Draconis sameAs Beta_Draconis.
- Beta_Draconis wasDerivedFrom Beta_Draconis?oldid=601975982.
- Beta_Draconis depiction Draco_IAU.svg.
- Beta_Draconis isPrimaryTopicOf Beta_Draconis.
- Beta_Draconis name "Beta Draconis".
