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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.
NGC 6559 is a star-forming region located at a distance of about 5000 light-years from Earth, in the constellation of Sagittarius, showing both emission (red) and reflection (blue) regions. In addition, several other nebulae have been located within Sagittarius and are of interest to astronomy.
Sagittarius A (Sgr A) is a complex radio source at the center of the Milky Way, which contains a supermassive black hole. It is located between Scorpius and Sagittarius , and is hidden from view at optical wavelengths by large clouds of cosmic dust in the spiral arms of the Milky Way.
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 .
Alpha Sagittarii is a blue, class B dwarf star.It does not appear particularly bright in the sky to the naked eye, with a visual apparent magnitude of +3.97.. The star has an effective temperature about twice that of the Sun and is nearly three times as massive, with a luminosity about 130 times that of the Sun. Based on an excess emission of infrared radiation, it may have a debris disk, much ...
The three components are designated Zeta Sagittarii Aa (officially named Ascella / ə ˈ s ɛ l ə /, the traditional name for the entire system), [9] [10] Ab and B. [6] The Washington Double Star Catalog cites a component separated 72.3" from the system, but it is a background star unrelated to the pair.
Chi 1 Sagittarii (χ 1 Sagittarii) is a binary star [6] system in the zodiac constellation of Sagittarius. The pair have a combined apparent visual magnitude of +5.03, [2] which is bright enough to be seen with the naked eye. Based upon an annual parallax shift of 12.95 mas as seen from Earth, [1] it is located around 252 light years from the Sun.
Messier 22 or M22, also known as NGC 6656 or the Great Sagittarius Cluster, is an elliptical globular cluster of stars in the constellation Sagittarius, near the Galactic bulge region. It is one of the brightest globulars visible in the night sky.