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Sagittarius (Chinese Astronomy)
The modern constellation Sagittarius lies across two of the quadrants, symbolized by the Azure Dragon of the East (東方青龍, ''Dōng Fāng Qīng Lóng'') and Black Tortoise of the North (北方玄武, ''Běi Fāng Xuán Wǔ''), that divide the sky in traditional Chinese uranography. The name of the western constellation in modern Chinese is 人馬座 (''rén mǎ zuò''), which means "the horse-man constellation". Stars The map of Chinese constellation in constellation Sagittarius area consists of : See also *Chinese astronomy *Traditional Chinese star names *Chinese constellations Traditional Chinese astronomy has a system of dividing the celestial sphere into asterisms or constellations, known as "officials" (Chinese ''xīng guān''). The Chinese asterisms are generally smaller than the constellations of Hellenistic t ... References {{reflist External linksSagittarius – Chinese associations香港太空館https://web.archive.org/web/20120813070951/http://www.lcs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sagittarius (constellation)
Sagittarius is one of the constellations of the zodiac and is located in the Southern celestial hemisphere. It is one of the 48 constellations listed by the 2nd-century astronomer Ptolemy and remains one of the 88 modern constellations. Its old astronomical symbol is (♐︎). Its name is Latin for "archer". Sagittarius is commonly represented as a centaur pulling back a bow. It lies between Scorpius and Ophiuchus to the west and Capricornus and Microscopium to the east. The center of the Milky Way lies in the westernmost part of Sagittarius (see Sagittarius A). Visualizations As seen from the northern hemisphere, the constellation's brighter stars form an easily recognizable asterism known as "the Teapot". The stars δ Sgr (Kaus Media), ε Sgr (Kaus Australis), ζ Sgr (Ascella), and φ Sgr form the body of the pot; λ Sgr (Kaus Borealis) is the point of the lid; γ2 Sgr (Alnasl) is the tip of the spout; and σ Sgr (Nunki) and τ Sgr the handle. These same sta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
15 Sagittarii
15 Sagittarii is a blue-hued binary star system in the southern zodiac constellation of Sagittarius. The estimated distance based upon photometry is around . It is faintly visible to the naked eye with an apparent visual magnitude of 5.37. The system is moving closer to the Sun with a heliocentric radial velocity of around −6 km/s. Chini et al. (2012) identify this as a double-lined spectroscopic binary star system. It shows a stellar classification of O9.7 Iab, matching a massive O-type supergiant star. Along with the O-type star 16 Sgr (HD 167263), it is ionizing an H II region along the western edge of the molecular cloud L291. The Washington Double Star Catalog lists four companions within a 2 arcsecond angular radius The angular diameter, angular size, apparent diameter, or apparent size is an angular distance describing how large a sphere or circle appears from a given point of view. In the vision sciences, it is called the visual angle, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
30 Sagittarii
This is the list of notable stars in the constellation Sagittarius, sorted by decreasing brightness. See also *List of stars by constellation All stars but one can be associated with an IAU constellation. IAU constellations are areas of the sky. Although there are only 88 IAU constellations, the sky is actually divided into 89 irregularly shaped boxes as the constellation Serpens is spli ... References * * * * * {{Stars of Sagittarius *List Sagittarius ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
31 Sagittarii
This is the list of notable stars in the constellation Sagittarius, sorted by decreasing brightness. See also *List of stars by constellation All stars but one can be associated with an IAU constellation. IAU constellations are areas of the sky. Although there are only 88 IAU constellations, the sky is actually divided into 89 irregularly shaped boxes as the constellation Serpens is spli ... References * * * * * {{Stars of Sagittarius *List Sagittarius ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
33 Sagittarii
This is the list of notable stars in the constellation Sagittarius, sorted by decreasing brightness. See also *List of stars by constellation All stars but one can be associated with an IAU constellation. IAU constellations are areas of the sky. Although there are only 88 IAU constellations, the sky is actually divided into 89 irregularly shaped boxes as the constellation Serpens is spli ... References * * * * * {{Stars of Sagittarius *List Sagittarius ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xi1 Sagittarii
Xi1 Sagittarii (ξ1 Sagittarii) is a solitary, blue-white hued star in the zodiac constellation of Sagittarius. It is visible to the naked eye with an apparent visual magnitude of +5.06. Based upon a small annual parallax shift of 1.58 mas as seen from Earth, this system is located roughly 2,100 light years from the Sun. This is a massive supergiant star with a stellar classification of B9/A0 Ib. With an estimated 7.8 times the mass of the Sun and an age of about 40 million years it has depleted the hydrogen at its core, causing it to expand to about 15 times the Sun's radius. It is radiating 2,753 times the Sun's luminosity from its photosphere at an effective temperature The effective temperature of a body such as a star or planet is the temperature of a black body that would emit the same total amount of electromagnetic radiation. Effective temperature is often used as an estimate of a body's surface temperature ... of about 9,400 K. Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
29 Sagittarii
This is the list of notable stars in the constellation Sagittarius, sorted by decreasing brightness. See also *List of stars by constellation All stars but one can be associated with an IAU constellation. IAU constellations are areas of the sky. Although there are only 88 IAU constellations, the sky is actually divided into 89 irregularly shaped boxes as the constellation Serpens is spli ... References * * * * * {{Stars of Sagittarius *List Sagittarius ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upsilon Sagittarii
Upsilon Sagittarii (Upsilon Sgr, υ Sagittarii, υ Sgr) is a spectroscopic binary star system in the constellation Sagittarius (constellation), Sagittarius. Upsilon Sagittarii is the prototypical hydrogen-deficient binary (HdB), and one of only four such systems known. The unusual stellar spectrum, spectrum of hydrogen-deficient binaries has made stellar classification of Upsilon Sagittarii difficult. System υ Sgr is a binary star, binary system with an orbital period of 137.939 days and is approximately 1,800 light years from Earth. The primary star dominates the visible radiation and spectrum, but the secondary is hotter and more massive. Some sources consider the "invisible" component to be the primary on the basis of its mass. There is also a disc of material being stripped from the primary and transferring material to the secondary, but no eclipses The system is classified as a single-lined spectroscopic binary, but high excitation lines from t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
