Messier 2 [SEP] constellation
Messier 2
Messier 2 or M2 (also designated NGC 7089) is a globular cluster in the constellation Aquarius, five degrees north of the star Beta Aquarii. It was discovered by Jean-Dominique Maraldi in 1746, and is one of the largest known globular clusters.
Discovery and visibility.
M2 was discovered by the French astronomer Jean-Dominique Maraldi in 1746 while observing a comet with Jacques Cassini. Charles Messier rediscovered it in 1760, but thought it a nebula without any stars associated with it. William Herschel
Messier 28
Messier 28 or M28, also known as NGC 6626, is a globular cluster of stars in the constellation Sagittarius. It was discovered by French astronomer Charles Messier on July 27, 1764. He briefly described it as a "nebula containing no star... round, seen with difficulty in 3½-foot telescope; Diam 2′." The 2′ at the end indicates an angle of two arcminutes.
In the sky it is less than a degree to the northwest of the 3rd magnitude star Kaus Borealis. This cluster is faintly