NGC 91 [SEP] constellation
NGC 91
NGC 91 (PGC 3325956, GC 41, GC 5097, or NPD 68 22.9) is a star with an apparent magnitude of 14.4 in the constellation of Andromeda. The star is southwest of the galaxy NGC 90. Discovered in 1866 by Herman Schultz, there have been many arguments if this star exists or not. However, people have observed the star, and have confirmed that NGC 91 exists.
NGC 4571
NGC 4571 is a spiral galaxy located in the constellation of Coma Berenices that William Herschel thought was Messier 91 in Charles Messier' catalog of deep-sky objects, before nearly two centuries later that object was determined to be the nearby barred spiral galaxy NGC 4548.
Physical properties.
The finding of Cepheids by the Canada France Hawaii Telescope in 1994 has allowed to know this galaxy is a member of the Virgo Cluster.
Despite being classified as a late-type galaxy, NGC 4571 has features more