Discovered on April 15, 1779 by Charles Messier.
Sweep 22 (March 13, 1826)
RA 12h 29m 5.4s, NPD 77d 14' 54" (1830.0)
B; R; g b M
Bright; round; gradually brighter toward the middle.
Sweep 247 (March 29, 1830)
RA 12h 29m 8.1s, NPD 77d 15' 0" (1830.0)
v B; v L; E; v s v m b M; r; 5'l, 4'br
Very bright; very large; extended; very suddenly very much brighter toward
the middle; mottled; 5' long, 4' broad.
Sweep 242 (March 23, 1830)
...., NPD 77d 16' +/- (1830.0)
v B; L; R; place only rough, being observed past meridian
Very bright; large; round; place only rough, being observed past meridian.
Last Modification: March 30, 2005