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See also: Globular cluster, List of globular clusters Messier 92 (also known as M92 , M 92 , or NGC 6341 ) is a globular cluster of stars in the northern constellation of Hercules . Discovery
The Messier catalogue comprises nearly all of the most spectacular examples of the five types of deep-sky object – diffuse nebulae, planetary nebulae, open clusters, globular clusters, and galaxies – visible from European latitudes. Furthermore, almost all of the Messier objects are among the closest to Earth in their respective classes ...
These are globular clusters within the halo of the Milky Way galaxy. The diameter is in minutes of arc as seen from Earth. For reference, the J2000 epoch celestial coordinates of the Galactic Center are right ascension 17 h 45 m 40.04 s, declination −29° 00′ 28.1″.
The first known globular cluster, now called M 22, was discovered in 1665 by Abraham Ihle, a German amateur astronomer. [4] [5] [6] The cluster Omega Centauri, easily visible in the southern sky with the naked eye, was known to ancient astronomers like Ptolemy as a star, but was reclassified as a nebula by Edmond Halley in 1677, [7] then finally as a globular cluster in the early 19th century ...
Messier 53 (also known as M53 or NGC 5024) is a globular cluster in the Coma Berenices constellation. [a] It was discovered by Johann Elert Bode in 1775.M53 is one of the more outlying globular clusters, being about 60,000 light-years (18.4 kpc) light-years away from the Galactic Center, and almost the same distance (about 58,000 light-years (17.9 kpc)) from the Solar System.
Messier 28 or M28, also known as NGC 6626, is a globular cluster of stars in the center-west of Sagittarius.It was discovered by French astronomer Charles Messier in 1764. [11] [a] He briefly described it as a "nebula containing no star... round, seen with difficulty in 3 1 ⁄ 2-foot telescope; Diam 2′."
NGC 6207 is a spiral galaxy located in the constellation Hercules.It is designated as SA(s)c in the galaxy morphological classification scheme and was discovered by William Herschel on 16 May 1787.
Messier 62 or M62, also known as NGC 6266 or the Flickering Globular Cluster, is a globular cluster of stars in the south [a] of the equatorial constellation of Ophiuchus. It was discovered in 1771 by Charles Messier, [b] then added to his catalogue eight years later. [11] M62 is about 21.5 kly [3] from Earth and 5.5 kly from the Galactic ...