William Herschel discovered NGC 6160 = H II-652 = h1960 on 18 Mar 1787 (sweep 718) and noted "F, pL, r." CH's reduced position is 10 sec of RA east of UGC 10400. JH made two observations and measured an accurate RA.

300/350mm - 13.1" (8/5/83): faint, diffuse, moderately large, slightly elongated, extremely faint star at the NE edge. Located 28' E of NGC 6146.

400/500mm - 17.5" (7/5/86): fairly faint, fairly small, oval WSW-ENE, small brighter core. Two mag 14 stars are just off the NE side 23" and 37" from the center. Member of the galaxy cluster AGC 2197 with NGC 6146 28' WSW.

Notes by Steve Gottlieb