Discovered before 1779 by Johann Gottfried Koehler.
Independently rediscovered on April 6, 1780 by Charles Messier.
Sweep 19 (March 10, 1826)
RA 8h 41m 49.6s, NPD 77d 33' 47" (1830.0).
200 st, more or less; it fills field; st 11 ... 15m. It is preceded by a rich
region of st 9 .. 10m.
200 stars, more or less; it fills field; stars from 11th to 15th magnitude.
It is preceded by a rich region of stars of 9th and 10th magnitude.
Sweep 241 (March 20, 1830)
RA 8h 41m 68.4s, NPD 77d 34' 56" (1830.0).
Superb cl very rich and brilliant; fills field; stars 9 ... 15m; straggling
edges and not very comp in M.
Superb cluster, very rich and brilliant; fills field; stars from 9th to 15th
magnitude; straggling edges and not very compressed in the middle.
Sweep 22 (March 13, 1826)
RA 8h 41m 75.9s, NPD 77d 35' 2"" (1830.0).
100 or 200 st coarsely sc 11 .. 15m.
100 or 200 stars coarsely scattered, from 11th to 15th magnitude.
Sweep 242 (March 23, 1830)
NPD 77d 34' 13" (1830.0).
A cluster. No further descrip[tion].
Last Modification: March 30, 2005