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Sagittarius contains two well-known star clouds, both considered fine binocular objects. The Large Sagittarius Star Cloud is the brightest visible region of the Milky Way. It is a portion of the central bulge of the galaxy seen around the thick dust of the Great Rift , and is the innermost galactic structure that can be observed in visible ...
Sagittarius A*, abbreviated as Sgr A* (/ ˈ s æ dʒ ˈ eɪ s t ɑːr / SADGE-AY-star [3]), is the supermassive black hole [4] [5] [6] at the Galactic Center of the Milky Way.Viewed from Earth, it is located near the border of the constellations Sagittarius and Scorpius, about 5.6° south of the ecliptic, [7] visually close to the Butterfly Cluster (M6) and Lambda Scorpii.
Eta Sagittarii (Eta Sgr, η Sagittarii, η Sgr) is a binary star system in the southern zodiac constellation of Sagittarius. Based upon parallax measurements, it is located at a distance of 146 light-years (45 parsecs) from Earth. [1] In India, where part of the constellation of Sagittarius represents an Elephant, this star forms the creature's ...
The supermassive black hole Sagittarius A*, imaged by the Event Horizon Telescope. [32] The complex astronomical radio source Sagittarius A appears to be located almost exactly at the Galactic Center and contains an intense compact radio source, Sagittarius A*, which coincides with a supermassive black hole at the center of the Milky Way.
Pi Sagittarii A has two nearby companions. The first is separated by 0.1 arcseconds, or at least 13 AUs. The second is 0.4 arcseconds away, which is 40 AU or more. Nothing is known about the orbits of these stars. [13] Being 1.43 degrees north of the ecliptic, Pi Sagittarii can be occulted by the Moon, and, very rarely, by planets.
The Sagittarius A* cluster is the cluster of stars in close orbit around Sagittarius A*, the supermassive black hole at the center of the Milky Way (in the Galactic Center). The individual stars are often listed as " S-stars ", but their names and IDs are not formalized, and stars can have different numbers in different catalogues .
Photographs of the star taken in 1950 at maximum brightness show that it is surrounded by a nebulous envelope. [8] A study of the star was requested by G. Herbig in 1956, who found it unique among well studied variable stars. The minimum brightness was found to be magnitude 17.0–17.5.
Epsilon Sagittarii (Latinised from ε Sagittarii, abbreviated Epsilon Sgr, ε Sgr), formally named Kaus Australis / ˈ k ɔː s ɔː ˈ s t r eɪ l ɪ s /, [8] [9] is a binary star system in the southern zodiac constellation of Sagittarius. The apparent visual magnitude of +1.85 [2] makes it the brightest object in Sagittarius.