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List Of Arabic Star Names
This is a list of Arabic star names. In Western astronomy, most of the accepted star names are Arabic, a few are Greek language, Greek and some are of unknown origin. Typically only bright stars have names. History of Arabic star names Very old star names originated among people who lived in the Arabian Peninsula more than a thousand years ago, after the rise of Islam. However, some Arabic language star names sprang up later in history, as translations of ancient Greek language descriptions. The astronomer Ptolemy, Claudius Ptolemy in his ''Almagest'' (2nd century) tabulated the celestial position and brightness (visual magnitude) of 1,025 stars. Ptolemy's book was translated into Arabic in the 8th and 9th centuries and became famous in Europe as a 12th-century Latin translation. Many of the Arabic-language star descriptions in the ''Almagest'' came to be widely used as names for stars. Ptolemy used a strategy of "figure reference" to identify stars according to their position ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpha Cancri
Alpha Cancri (α Cancri, abbreviated Alpha Cnc, α Cnc, named Acubens ), is a star system in the constellation of Cancer. Nomenclature ''α Cancri'' ( Latinised to ''Alpha Cancri'') is the star's Bayer designation. The traditional name ''Acubens'' (Açubens) is derived from the Arabic , 'the claws'. A second name, Sertan , derives from the Arabic ''al-saraṭān'', 'the crab'. The International Astronomical Union Working Group on Star Names (WGSN) choose 'Acubens' as the proper name for the primary component of this star. Properties α Cancri is a fourth-magnitude star with an apparent magnitude of 4.20, making it barely visible to the naked eye under good lighting conditions. Nevertheless, it is 23 times more luminous than the Sun. Its stellar classification is given as kA7VmF0/2III/IVSr, indicating an Am star with calcium K-lines similar to an A7 main sequence star and hydrogen lines more like an F0 giant or subgiant star. The distance of α Cancri cal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xi Draconis
Xi Draconis (ξ Draconis, abbreviated Xi Dra, ξ Dra) is a double or binary star in the northern circumpolar constellation of Draco. It has an apparent visual magnitude of 3.75. Based upon parallax measurements, it is located at a distance of from the Sun. At this distance, the apparent magnitude is diminished by 0.03 from extinction caused by intervening gas and dust. The two components are designated Xi Draconis A (officially named Grumium , a traditional name for the system) and B. Nomenclature ''ξ Draconis'' ( Latinised to ''Xi Draconis'') is the system's Bayer designation. The designations of the two components as ''Xi Draconis A'' and ''B'' derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU). It bore the traditional names ''Grumium''. This is a graphic corruption of the Latin ''Grunnum'' 'snout', as Ptolemy had described this star as being on the jawbone ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gamma Draconis
Gamma Draconis (γ Draconis, abbreviated Gamma Dra, γ Dra), formally named Eltanin , is a star in the northern constellation of Draco. Contrary to its gamma-designation (historically third-ranked), it is the brightest object in Draco at magnitude 2.2, outshining Beta Draconis by nearly half a magnitude and Alpha Draconis by over a magnitude. Gamma Draconis is at a distance of from the Sun, as determined by parallax measurements from the Hipparcos astrometry satellite. In 1728, while unsuccessfully attempting to measure the star's parallax, James Bradley discovered the aberration of light resulting from the relative movement of the Earth. Bradley's discovery confirmed Copernicus' theory that the Earth revolved around the Sun. It is drifting closer to the Solar System with a radial velocity of about –28 km/s. In 1.5 million years, Gamma Draconis will pass within 28 light-years of Earth. For a period, if its current absolute magnitude does not change, it will ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mother Camels
The protecting Mother Camels (Arabic العوائذ ''alʽawaʼid'') is an asterism in the constellation of Draco described by ancient Arabic nomadic tribes. The asterism was interpreted as a ring of mother camels – Beta Draconis (Rastaban), Gamma Draconis (Eltanin), Nu Draconis (Kuma) and Xi Draconis (Grumium) – surrounding a foal (the faint star Alruba), with another mother camel, Mu Draconis (Alrakis) running to join them. The Arabs did not see the constellation Draco as it is now. The Mother Camels were protecting the foal from the attack of two wolves or jackals – Zeta Draconis (Aldhibah) and Eta Draconis Eta Draconis (η Draconis, abbreviated Eta Dra, η Dra) is a binary 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 f ... (Athebyne). The faint pair Omega Draconis and 27 Draconis was known as the "wolf's claws" (الأظفار ا� ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eta Lyrae
Eta Lyrae, a name Latinized from η Lyrae, is a likely binary star system in the northern constellation of Lyra. It has the traditional name Aladfar and is faintly visible to the naked eye with an apparent visual magnitude of 4.43. The system is located at a distance of approximately 1,390 light years from the Sun based on parallax, but is drifting closer with a radial velocity of −8 km/s. Nomenclature ''η Lyrae'' ( Latinised to ''Eta Lyrae'') is the binary star's Bayer designation. Its designation as the ''A'' component of a double star, and of its two constituents as the ''Aa'' and ''Ab'' components, derives from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU). 'BD +38 3491' is the 'B' component's designation in the Bonner Durchmusterung astrometric star catalogue. Eta Lyrae bore the traditional name ''Aladfar'', from the Arabic ''الأظفر'' ''al- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taurus (constellation)
Taurus (Latin, 'Bull') is one of the constellations of the zodiac and is located in the northern celestial hemisphere. Taurus is a large and prominent constellation in the Northern Hemisphere's winter sky. It is one of the oldest constellations, dating back to the Early Bronze Age at least, when it marked the location of the Sun during the spring equinox. Its importance to the agricultural calendar influenced sacred bull, various bull figures in the mythologies of Ancient Sumerian religion, Sumer, Akkadian religion, Akkad, Assyrian religion, Assyria, Babylonian religion, Babylon, Ancient Egyptian religion, Egypt, Ancient Greek religion, Greece, and Religion in ancient Rome, Rome. Its old astronomical symbol is (♉︎), which resembles a bull's head. A number of features exist that are of interest to astronomers. Taurus hosts two of the nearest open clusters to Earth, the Pleiades and the Hyades (star cluster), Hyades, both of which are visible to the naked eye. At first magnitu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epsilon Tauri
Epsilon Tauri or ε Tauri, formally named Ain (), is an orange giant star located approximately from the Sun in the constellation of Taurus. An exoplanet (designated Epsilon Tauri b, later named Amateru) is believed to be orbiting the star. It is a member of the Hyades open cluster. As such its age is well constrained at 625 million years. It is claimed to be the heaviest among planet-harboring stars with reliable initial masses. Given its large mass, this star, though presently of spectral type K0 III, was formerly of spectral type A that has now evolved off the main sequence into the giant phase. It is regarded as a red clump giant; that is, a core-helium burning star. Since Epsilon Tauri lies near the plane of the ecliptic, it is sometimes occulted by the Moon and (very rarely) by planets. It has an 11th magnitude companion 182 arcseconds from the primary, although this is an unrelated background star. Nomenclature ''ε Tauri'' ( Latinised to ''Epsilon Tauri' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpha Draconis
Thuban (), with Bayer designation Alpha Draconis or α Draconis, is a binary star system in the northern constellation of Draco. A relatively inconspicuous star in the night sky of the Northern Hemisphere, it is historically significant as having been the north pole star from the 4th to 2nd millennium BC. Johann Bayer gave Thuban the designation Alpha and placed it as the only member of his ''secundae'' magnitude class in Draco, although its current apparent magnitude of 3.65 means it is 3.7 times fainter than the brightest star in the constellation, Gamma Draconis (Eltanin), which Bayer placed in his ''tertiae'' magnitude class although its current apparent magnitude is 2.24. Nomenclature ''α Draconis'' ( Latinised to ''Alpha Draconis'') is the star's Bayer designation. The traditional name ''Thuban'' is derived from the Arabic word ' ('large snake' (e.g. a python or a legendary draconian serpent)). It is sometimes known as the ''Dragon's Tail'' and as ''Adib'' . ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xi Andromedae
Xi Andromedae is a solitary star in the northern constellation of Andromeda. It has the proper name Adhil, pronounced ; the Bayer designation is Latinized from ξ Andromedae, abbreviated Xi And or ξ And, respectively. The star has an apparent magnitude of +4.9, which is bright enough to be faintly visible to the naked eye at night. Based on parallax measurements obtained during the Gaia mission, it lies at a distance of roughly from the Sun. It is drifting closer with a heliocentric radial velocity of –12.6 km/s. Nomenclature ''ξ Andromedae'' ( Latinised to ''Xi Andromedae'') is the star's Bayer designation. It also bears the Flamsteed designation ''46 Andromedae''. Johann Bayer labeled this star "ξ" in his '' Uranometria''. The star appeared in John Flamsteed's '' Atlas Coelestis'', but was unlabeled. It was later designated as ''46 And'' by Jérôme Lalande. The label "ξ" was used in ''Atlas Coelestis'', apparently erroneously, for what Bayer had labeled " ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epsilon Canis Majoris A
Epsilon Canis Majoris is a binary star system and the second-brightest star in the constellation of Canis Major. Its name is a Bayer designation that is Latinised from ε Canis Majoris, and abbreviated Epsilon CMa or ε CMa. This is the 22nd- brightest star in the night sky with an apparent magnitude of 1.50. About 4.7 million years ago, it was the brightest star in the night sky, with an apparent magnitude of −3.99. Based upon parallax measurements obtained during the Hipparcos and the Gaia mission, it is about light-years distant. The two components are designated ε Canis Majoris A, officially named Adhara – the traditional name of the system, and B. Nomenclature ''ε Canis Majoris'' (Latinised to ''Epsilon Canis Majoris'') is the binary system's Bayer designation. The designations of the two components as ''ε Canis Majoris A'' and ''B'' derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
