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Sagittarius (Chinese Astronomy)
The modern constellation Sagittarius (constellation), Sagittarius lies across two of the quadrants, symbolized by the Azure Dragon, Azure Dragon of the East (東方青龍, ''Dōng Fāng Qīng Lóng'') and Black Tortoise, Black Tortoise of the North (北方玄武, ''Běi Fāng Xuán Wǔ''), that divide the sky in traditional Traditional Chinese star names#Categories of Chinese traditional uranography, 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 References {{reflist External linksSagittarius – Chinese associations香港太空館https://web.archive.org/web/20120813070951/http://www.lcsd.gov.hk/CE/Museum/Space/Research/c_index.htm 研究資源] *中國星區、星官及星名英譯表*台灣自然科學� ... [...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 s ... [...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, ... [...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 References * * * * * {{Stars of Sagittarius *List Sagittarius Sagittarius ( ) may refer to: *Sagittarius (constellation) *Sagittarius (astrology), a sign of the Zodiac Ships *''SuperStar Sagittarius'', a cruise ship * USS ''Sagittarius'' (AKN-2), a World War II US Navy cargo ship Music *Sagittarius (ban ... [...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. R ... [...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 References * * * * * {{Stars of Sagittarius *List Sagittarius Sagittarius ( ) may refer to: *Sagittarius (constellation) *Sagittarius (astrology), a sign of the Zodiac Ships *''SuperStar Sagittarius'', a cruise ship * USS ''Sagittarius'' (AKN-2), a World War II US Navy cargo ship Music *Sagittarius (ban ... [...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. Upsilon Sagittarii is the prototypical hydrogen-deficient binary (HdB), and one of only four such systems known. The unusual spectrum of hydrogen-deficient binaries has made stellar classification of Upsilon Sagittarii difficult. System υ Sgr is a 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 the secondary can be detected in the ultraviolet. Radial ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rho1 Sagittarii
Rho1 Sagittarii, Latinized from ρ1 Sagittarii, is a single, variable star in the southern constellation of Sagittarius. It has a white hue and is visible to the naked eye with an apparent visual magnitude that fluctuates around 3.93. The distance to this star is approximately 127 light years based on parallax, and it is drifting further away with a radial velocity of +1.2 km/s. It is positioned near the ecliptic and so it can be occulted by the Moon. This object has a stellar classification of A9IV, matching a subgiant star that is evolving away from the main sequence. It is a low amplitude Delta Scuti variable, ranging from 3.94 to 3.90 magnitude with a period of 0.05 days. The star is 893 million years old and is spinning with a projected rotational velocity of 68 km/s. It has 1.9 times the mass of the Sun and 3.3 times the Sun's radius. The star is radiating 31 times the luminosity of the Sun from its photosphere at an effective temperature T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
43 Sagittarii
43 Sagittarii is a single star in the southern constellation of Sagittarius. It has the Bayer designation d Sagittarii, while ''43 Sagittarii'' is the Flamsteed designation. This object is visible to the naked eye as a faint, yellow-hued star with an apparent visual magnitude of 4.88. From parallax measurements, it is estimated to lie around 470 light years away from the Sun. The star is drifting further from the Earth with a heliocentric radial velocity of +15.2 km/s. It is located near the ecliptic and thus is subject to lunar occultations. This is an aging giant/bright giant star with a stellar classification of G8II-III, and is most likely (97% chance) on the horizontal branch. It is around 350 million years old with 3.3 times the mass of the Sun. Having exhausted the supply of hydrogen at its core, the star has expanded to 24 times the Sun's radius and is now generating energy through core helium fusion. It is radiating 277 times the luminosity of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pi Sagittarii
Pi Sagittarii (π Sagittarii, abbreviated Pi Sgr, π Sgr) is a triple star system in the zodiac constellation of Sagittarius. It has an apparent visual magnitude of +2.89, bright enough to be readily seen with the naked eye. Based upon parallax measurements, it is roughly from the Sun. The three components are designated Pi Sagittarii A (officially named Albaldah , from the traditional name of the entire system), B and C. Nomenclature ''π Sagittarii'' ( Latinised to ''Pi Sagittarii'') is the system's Bayer designation. The designations of the three constituents as ''Pi Sagittarii A'', ''B'' and ''C'', derive from the convention used by the Washington Multiplicity Catalog (WMC) for multiple star systems, and adopted by the International Astronomical Union (IAU). The system bore the traditional name ''Albaldah'', which comes from the Arabic بلدة ''bálda'' 'the town'. In 2016, the IAU organized a Working Group on Star Names (WGSN) to catalo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omicron Sagittarii
ο Sagittarii, Latinized as Omicron Sagittarii, is a single star in the constellation Sagittarius. It is yellow in hue and visible to the naked eye with an apparent visual magnitude of +3.77. The distance to this star is approximately 142 light years based on parallax. It is drifting further away from the Sun with a radial velocity of +26 km/s, having come to within around a million years ago. This object is position 0.86 degrees north of the ecliptic, so ο Sagittarii can be occulted by the Moon and very rarely by planets. The last occultation by a planet took place on 24 December 1937, when it was occulted by Mercury. It was almost eclipsed by the sun, which occupies a mean, rounded, half of one degree of the sky, on 5 January. Thus the star can be viewed the whole night, crossing the sky, in early July. This is an aging giant star with a stellar classification of G9IIIb. It is classified as a red clump giant, suggesting it is on the horizontal branch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
