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List Of The Star Names In Draco
This is the list of the star names in the constellation Draco. α Dra * Thuban: : ＜ ( ar) ثعبان ''thu'bān'', serpent, the last part of ''Ra's al-Thu'bān''. (See β Dra.) * Adib: : ＜ (ar) الذئبة ''al-Dhi'b'', the Wolf. (See θ Dra.) * the Dragon's Tail: : called among seamen. * ''Yu Choo'': : ＜ ( zh) 右枢, the Right-hand Pivot. β Dra * Rastaban: : ＜ (ar) س الثعبان ''Ra's al-Thu'bān'' the Head of the Serpent, transferred from γ Dra. (See γ Dra.) * Alwaid: : ＜ (ar) ''al-‘Awā'idh'' the Old Mother( Camel)s, for β, γ, ξ, and ν Dra. : ＜ (ar) al-‘Awwād the Lute-player. (See μ Dra.) * ''Asuia'': : ＜ (ar) ''al-Shujā‘'' the Sea-serpent. γ Dra * Eltanin (Etamin, Etanin): : ＜ (ar) راس التنين ''Ra's al-Tinnīn'' the Head of the Dragon. * ''Rastaben'' (Rasaben, Rastaban): : ＜ mistransliterated form of ''Ra's al-Tinnīn''. * the Zenith-star: [Baidu] |
Star Name
In astronomy, stars have a variety of different stellar designations and names, including catalogue designations, current and historical proper names, and foreign language names. Only a tiny minority of known stars have proper names; all others have only designations from various catalogues or lists, or no identifier at all. Hipparchus in the 2nd century BC enumerated about 850 naked-eye stars. Johann Bayer in 1603 listed about twice this number. Only in the 19th century did star catalogues list the naked-eye stars exhaustively. The Bright Star Catalogue, which is a star catalogue listing all stars of apparent magnitude 6.5 or brighter, or roughly every star visible to the naked eye from Earth, contains 9,096 stars. The most voluminous modern catalogues list on the order of a billion stars, out of an estimated total of 200 to 400 billion in the Milky Way. Proper names may be historical, often transliterated from Arabic or Chinese names. Such transliterations can vary so the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zeta Draconis
Zeta Draconis (ζ Draconis, abbreviated Zet Dra, ζ Dra) is a binary star in the northern circumpolar constellation of Draco. With an apparent visual magnitude of +3.17, it is the fifth-brightest member of this generally faint constellation. Its distance from the Sun has been measured using the parallax technique, yielding an estimate of roughly . The two components are designated Zeta Draconis A (formally named Aldhibah , after the traditional name of the system) and B. Nomenclature ''ζ Draconis'' ( Latinised to ''Zeta Draconis'') is the system's Bayer designation. The designations of the two components as ''Zeta Draconis A'' and ''B'' derives from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU). Zeta Draconis has the old Arabic name الذئب ''al-dhiʼb'' "the wolf" or "the hyena", given in its feminine form "Al Dhiʼbah" (ذئبة) in Allen (1899) (though he mis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Stars In Draco ...
This is the list of notable stars in the constellation Draco. See also *List of stars by constellation References Bibliography * * * * * {{DEFAULTSORT:Stars in Draco, List of *List Draco Draco is the Latin word for serpent or dragon. Draco or Drako may also refer to: People * Draco (lawgiver) (from Greek: Δράκων; 7th century BC), the first lawgiver of ancient Athens, Greece, from whom the term ''draconian'' is derived * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Psi Draconis
The Bayer designation Psi Draconis (ψ Dra / ψ Draconis) is shared by two star systems, in the constellation Draco Draco is the Latin word for serpent or dragon. Draco or Drako may also refer to: People * Draco (lawgiver) (from Greek: Δράκων; 7th century BC), the first lawgiver of ancient Athens, Greece, from whom the term ''draconian'' is derived * ...: * ψ¹ Draconis * ψ² Draconis {{SIA , astronomical objects Draconis, Psi Draco (constellation) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chi Draconis
Chi Draconis (χ Dra, χ Draconis, Chi Draconis) is a apparent magnitude, magnitude 3.6 binary star in the constellation Draco (constellation), Draco. It also has the Flamsteed designation ''44 Draconis''. At a distance of 27 light years, it is one of the forty or so List of nearest bright stars, closest stars. Binary system χ Draconis is a spectroscopic binary which has been resolved using speckle interferometry. The primary is an F7 main sequence star. The spectral type of the companion cannot be determined directly with any accuracy, but is known to be between G8 and K2 and is assumed to be K0. The properties of the secondary suggest that it is also a main-sequence star. The separation of the two stars varies between about and during the orbital eccentricity, eccentric 182-day orbit. The primary star has a mass fractionally higher than solar mass, the Sun's, but is significantly larger and hotter resulting in it being 86% more luminous. Its age is estimated to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phi Draconis
Phi Draconis (φ Dra / φ Draconis) is a fourth-magnitude variable star in the constellation Draco. It has the Flamsteed designation 43 Draconis. It is also a triple star system where the brightest component is a chemically peculiar Ap star. The brightness of φ Draconis varies by about 0.04 of a magnitude every 1.7 days. This is due to very strong magnetic fields at the surface of the star, and it is classified as an α2 Canum Venaticorum variable. φ Draconis is a multiple star system containing three stars. The inner pair form a single-lined spectroscopic binary in an eccentric 128-day orbit. The outermost star orbits the inner pair every 308 years. The outer pair can be resolved visually and have a semi-major axis of . A fourth component, C, is also listed in multiple star catalogues, but is only a chance alignment with the triple system. Phi Draconis Aa is a main-sequence Ap star with a spectral class of B8. The main abundance excess is silicon, althoug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sigma Draconis
Sigma Draconis is a single star in the northern constellation of Draco. It has the proper name Alsafi , while Sigma Draconis, which is latinised from σ Draconis and abbreviated Sig Dra or σ Dra, is the Bayer designation. It has an apparent visual magnitude of 4.7, which is bright enough to be faintly visible to the naked eye. Based on parallax measurements, this star is located at a distance of 18.8 light years from the Sun. It is receding from the Sun with a radial velocity of 26.8 km/s. Name ''σ Draconis'' ( Latinised to ''Sigma Draconis'') is the star's Bayer designation, established in 1603 as part of the ''Uranometria'', a star catalogue produced by German celestial cartographer Johann Bayer. It bore the traditional name ''Alsafi'', derived from the Arabic ''Athāfi'', itself erroneously transcribed from the Arabic plural ''Athāfiyy'', by which the nomads designated the tripods of their open-air kitchens. It was the name of an association of this st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nu2 Draconis
Nu Draconis (also known as ν Dra, ν Draconis, or traditionally as Kuma ) is a double star in the constellation Draco. The respective components are designated ν1 Draconis and ν2 Draconis. The second component is a spectroscopic binary star system. This star, along with β Dra (Rastaban), γ Dra (Eltanin), μ Dra (Alrakis) and ξ Dra (Grumium) were Al ʽAwāïd, "the Mother Camels", which was later known as the Quinque Dromedarii. In Chinese, (), meaning '' Celestial Flail'', refers to an asterism consisting of ν Draconis, ξ Draconis, β Draconis, γ Draconis and ι Herculis. Consequently, the Chinese name for ν Draconis itself is (, en, the Second Star of Celestial Flail.) , Hong Kong Space ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nu1 Draconis
Nu Draconis (also known as ν Dra, ν Draconis, or traditionally as Kuma ) is a double star in the constellation Draco. The respective components are designated ν1 Draconis and ν2 Draconis. The second component is a spectroscopic binary star system. This star, along with β Dra (Rastaban), γ Dra (Eltanin), μ Dra (Alrakis) and ξ Dra (Grumium) were Al ʽAwāïd, "the Mother Camels", which was later known as the Quinque Dromedarii. In Chinese, (), meaning '' Celestial Flail'', refers to an asterism consisting of ν Draconis, ξ Draconis, β Draconis, γ Draconis and ι Herculis. Consequently, the Chinese name for ν Draconis itself is (, en, the Second Star of Celestial Flail.) , Hong Kong Space ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mu Draconis
Mu Draconis (μ Draconis, abbreviated Mu Dra, μ Dra) is a multiple star system near the head of the constellation of Draco. With a combined magnitude of 4.92, it is visible to the naked eye. Based on parallax estimates by the Hipparcos spacecraft, it is located approximately 89 light-years from the Sun. The system consists of a single primary star (designated Mu Draconis A, officially named Alrakis from the traditional name of the system), a secondary binary pair (Mu Draconis B) and a further single star (C). B's two components are designated Mu Draconis Ba and Bb. Mu Draconis A and Ba are nearly identical F-type main-sequence stars, with masses of and , respectively. Both have the spectral class of F5V, and have similar apparent magnitude, at 5.66 and 5.69, respectively. The secondary, Mu Draconis B, has a drifting radial velocity, and is itself a spectroscopic binary with an orbital period of 2,270 days.SB9 catalog entry The distance between both st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lambda Draconis
Lambda Draconis (λ Draconis, abbreviated Lam Dra, λ Dra), also named Giausar ( ), is a solitary, orange-red star in the northern circumpolar constellation of Draco. It is visible to the naked eye with an apparent visual magnitude of +3.85. Based upon an annual parallax shift of 9.79 mas as seen from the Earth, the star is located around 333 light years from the Sun. This is an evolved red giant star on the asymptotic giant branch with a stellar classification of M0III-IIIa Ca1. It is a suspected slow irregular variable with a periodicity of roughly 1,100 days. The measured angular diameter, after correction for limb darkening, is . At the estimated distance of the star, this yields a physical size of about 53 times the radius of the Sun. It has an estimated 1.7 times the mass of the Sun and is radiating 834 times the solar luminosity from its photosphere at an effective temperature of 3,958 K. Nomenclature λ Draconis ( Latinised to ''Lambda Dr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kappa Draconis
Kappa Draconis, Latinized from κ Draconis, is a blue giant star located in the northern circumpolar constellation of Draco. At an apparent magnitude of 3.88, it is barely visible to the naked eye when artificial lighting from cities is present. Nevertheless, it is a powerful star, approximately five time as massive as the Sun. It is about 460 light-years away, and is 1,400 times brighter than the Sun. The star is currently located at declination (right ascension ), but due to the effects of precession, Kappa Draconis was the nearest star to the north celestial pole visible to the naked eye from 1793 BC to approximately 1000 BC, though it was 6° removed from perfect alignment, making it only an approximate pole star, similar to the roughly 7° variance from perfect alignment of the much brighter (magnitude 2.08) star Kochab, at the same time during Earth's precession. Properties Kappa Draconis is a classical Be star, displaying Balmer emission lines in its spectrum. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
