Shkh 352-2: fairly faint, very small, round, 14" diameter, very small bright nucleus. Located 0.8' NE of NGC 3647 (Shkh 352-1) in a dense group of compact galaxies. CGCG 39-141 lies 50" E and Shkh 352-6 lies 42" S.
Shkh 352-3: faint, very small, round, 14" diameter. In a very rich, group of faint, compact ellipticals with CGCG 139-140 = Shkh 352-2 0.8' W, CGCG 139-142 = Shkh 352-4 0.7' N, Shkh 352-7 0.7' NE and NGC 3647 1.5' WSW.
Shkh 352-4: fairly faint, very small, round, 12", very small bright nucleus. Located 0.9' NE of CGCG 39-140 = Shkh 352-2 and 0.7' N of Shkh 352-3 in the core of this compact cluster. Shkh 352-7 lies 45" ESE.
Shkh 352-5: extremely faint and small, 6" diameter. Furthest north in tight group of 7 members of Shkh 352, packed into a 2' circle. Located 42" N of CGCG 39-142 = Shkh 352-4. A mag 16 star lies 35" NW.
Shkh 352-6: very faint, extremely small, round, 6" diameter. This member of Shkh 352 forms the southern vertex of a tiny quadrilateral with NGC 3647 = CGCG 39-135 0.8' NW, CGCG 39-140 0.7' N and CGCG 39-141 1' NE!
Shkh 352-7: faint, extremely small, round, 6" diameter, bright stellar nucleus. Located 40" NE of Shkh 352-3 and 45" ESE of CGCG 039-142 = Shkh 352-4.
Albert Marth discovered NGC 3647 = m 223 on 22 Mar 1865 and noted an "eF neb. star." His position falls in a tight quartet including CGCG 039-135, -140, -141 and -142. Bigourdan misidentified a star as NGC 3647.
Various modern sources pick all four of these compact galaxies as NGC 3647! NED, HyperLeda and NGC/IC Project (Corwin) identifies CGCG 039-141 as NGC 3647, CGCG identifies CGCG 039-142 as NGC 3647, and the RNGC position falls on CGCG 039-140. But CGCG 039-135 is the brightest visually in the quartet! So, although the identification is uncertain with 4 close candidates, the 2014 version of Harold Corwin's NGC positions file also identifies CGCG 039-135 as NGC 3647.
600/800mm - 24" (5/20/20): at 375x; faint, fairly small, slightly elongated E-W, 20"x15", low surface brightness. Brightest in a quartet with CGCG 039-140 0.8' NE, CGCG 039-141 1.5' E and CGCG 039-142 1.7' NE. All three were very faint, round, ~12" diameter.
900/1200mm - 48" (4/4/11): fairly faint, small, round, 18" diameter, small bright nucleus. First in the dense Shkh 352 cluster (7 members within 2') with 6 galaxies close following including Shkh 352-6 0.8' SE, CGCG 39-140 0.8' NE and Shkh 352-3 1.5' ENE. Located 4.6' N of NGC 3644 (brightest nearby galaxy) and 11' ENE of mag 8.1 HD 98603.
Notes by Steve Gottlieb