Discovered by Pierre Méchain on March 15, 1781.
[Unpublished Observations of Messier's Nebulae and Clusters.
Scientific Papers, Volume 2, p. 660]
1787, Jan. 14 (Sw. 691). vB. mE. [very bright, much extended], over 15' long,
a BN [bright nucleus] in the middle.
Sweep 419 (April 23, 1832)
RA 12h 5m 8.1s, NPD 74d 9' 0" (1830.0)
p B; v s b M to nucl; a long ray pos = 153.0 deg by meas; 8'...10'l, 30 br.
Pretty bright; very suddenly brighter toward the middle to a nucleus; a long
ray in position angle = 153.0 deg by measurement; 8' to 10' long, 30 ["]
broad.
Sweep 422 (April 28, 1832)
RA 12h 5m 8.4s, NPD 74d 9' 34" (1830.0)
B; L; m E pos 152.1 deg by meas; v s v m b M 8'...10' long. A fine object.
Bright; large; much extended in position angle 152.1 deg by measurement;
very suddenly very much brighter toward the middle, 8'...10' long.
A fine object.
Sweep 421 (April 26, 1832)
...., NPD 74d 9' 16" (1830.0)
B; L; v m E; p s b M; precedes 6 comae about 30' of space
Bright; large; very much extended; pretty suddenly brighter toward the
middle; precedes [star] 6 Comae about 30' of space.
Last Modification: February 20, 2005