Although these overlapping galaxies form a physical pair, studies reveal neither galaxy is tidally perturbed.

600/800mm - 24" (3/22/14): fairly faint to moderately bright, moderately large, elongated 2:1 E-W, sharply concentrated with a small bright roundish core. The extension rapidly dim towards the tips. I didn't look for KTG 18A on the WNW side of the halo. Located 25' NNE of mag 4.3 Sigma Gem.

24" (3/9/13): moderately bright to fairly bright, moderately large, oval 2:1 E-W, 1.3'x0.7', sharply concentrated with a bright 20" core. The halo is fairly uniform except for the nucleus of superimposed KTG 18A, which was barely glimpsed as a stellar or quasi-stellar spot on the west side (30" from the center of UGC 3995). A mag 11 star lies 1.8' S. CGCG 148-5 = KTG 18C lies 4' ENE.

Notes by Steve Gottlieb