Discovered by Philippe Loys de Cheseaux in 1745-46.
Independently rediscovered by Johann Gottfried Koehler between 1772 and 1779.
Independently rediscovered by Pierre Méchain on June 28, 1780.
Sweep 90 (August 24, 1827
RA 19h 46m 8.0s, NPD 71d 38' 31s (1830.0)
v L; loose; fills field; a fine object; stars 11...16 m; the most condensed
part = 3', of a triangular figure, the angle northward.
Very large; loose; fills field [of view]; a fine object; stars of 11th to
16th magnitude; the most condensed part is 3' in diameter, of a triangular
figure, the angle northward.
Sweep 364 (August 8, 1831)
RA 19h 46m 12.1s, NPD 71d 38' 42s (1830.0)
An irreg R mass of closely packed st; g b M; 3' or 4' diam; a decided cl;
but towards the s p the Milky Way is immensely rich.
An irregularly round mass of closely packed stars; gradually brighter toward
the middle; 3' or 4' diameter; a decided cluster; but towards the south
preceding [SW] the Milky Way is immensely rich.
Last Modification: March 30, 2005