Stephane Javelle discovered IC 666 = J. 1-192 = Sw. 10A-2 on 1 Apr 1892. Lewis Swift independently found it two weeks later on 16 Apr 1892 and logged "eeF, vS, ee diff. NGC 3492 near. 4th of 4." Swift was credited first in the IC, though Javelle deserves credit.

400/500mm - 17.5" (4/25/98): extremely faint and small, round, 15" diameter. Last and most difficult of four found in AGC 1142 and observation confused by a mag 15 star 40" following. Difficult to view both simultaneously. Located 4.6' SE of NGC 3492. Viewed hampered by hazy sky conditions due to smoke.

Notes by Steve Gottlieb