NGC 99 [SEP] constellation
NGC 99
NGC 99 is a spiral galaxy in the constellation Pisces. It was discovered on 8 October 1883 by the French astronomer Édouard Stephan.
Messier 99
Messier 99 or M99, also known as NGC 4254, is a grand design spiral galaxy in the northern constellation Coma Berenices approximately in distance from the Milky Way. It was discovered by Pierre Méchain on March 17, 1781. The discovery was then reported to Charles Messier, who included the object in the Messier Catalogue of comet-like objects. Messier 99 was one of the first galaxies in which a spiral pattern was seen. This pattern was first identified by Lord Rosse in the spring of 1846.