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The constellation Sagittarius. North is to the left. The line going to the right connects ζ to α and β Sagittarii. Above this line one sees Corona Australis. α Sgr (Rukbat, meaning "the archer's knee" [6]) despite having the "alpha" designation, is not the brightest star of the constellation, having a magnitude of only 3.96. It is towards ...
hypergiant; member of the Quintuplet star cluster: LBV 1806-20: 18 h 08 m 40.3 s: −20° 24′ 41″ 28000: LBV: luminous blue variable; member of the 1806-20 cluster WR 102ea: 17 h 46 m 15.13 s: −28° 49′ 37.0″ 26000: Wolf–Rayet star; member of the Quintuplet star cluster: S2: 17 h 45 m 40.04 s: −29° 00′ 28″ n/a: 26000: orbits ...
A celestial map by the Dutch cartographer Frederik de Wit, 1670. A star chart is a celestial map of the night sky with astronomical objects laid out on a grid system. They are used to identify and locate constellations, stars, nebulae, galaxies, and planets. [1]
Xi 1 Sagittarii (ξ 1 Sagittarii) is a solitary, [11] 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. [2] Based upon a small annual parallax shift of 1.58 mas as seen from Earth, [1] this system is located roughly 2,100 light years from the Sun.
Gamma 2 Sagittarii (γ 2 Sagittarii, abbreviated Gamma 2 Sgr, γ 2 Sgr), formally named Alnasl / æ l ˈ n æ z əl /, [7] is a 3rd-magnitude star in the zodiac constellation of Sagittarius. The location of this star is in the handle of the Bow of Sagittarius the Centaur. It is approximately 32.6 parsecs (106 light-years) from the Sun and has ...
Zeta Sagittarii (ζ Sagittarii, abbreviated Zeta Sgr, ζ Sgr) is a triple star system and the third-brightest star in the constellation of Sagittarius after Kaus Australis and Nunki. Based upon parallax measurements, it is about 88 light-years (27 parsecs ) from the Sun .
21 Sagittarii is a binary star [3] system in the southern zodiac constellation of Sagittarius. It is visible to the naked eye as a faint point of light with a combined apparent visual magnitude of 4.81. [2] The system is located approximately 410 light years away from the Sun based on parallax. [1]
Constellations are based on asterisms, but unlike asterisms, constellations outline and today completely divide the sky and all its celestial objects into regions around their central asterisms. [1] [2] For example, the asterism known as the Big Dipper or the Plough comprises the seven brightest stars in the constellation Ursa Major.