UGC 10420 HCG 83
Her
☀13.8mag
Ø 1.7' / 54''

400/500mm - 17.5" (7/21/90): faint, small, round, even surface brightness. A mag 15 star is off the WSW end 42" from the center and a mag 12 star lies 1.4' NNW. This galaxy is the brightest and furthest north in a chain of four galaxies oriented N-S in AGC 2147. Located 5.6' NNW of mag 8.9 SAO 101866. Situated on a line to the south are MCG +03-41-052 by 2.4' and MCG +03-41-051 by 4.2'.

600/800mm - 24" (6/28/16): moderately bright and large, elongated 4:3 ~N-S, ~0.8'x0.6', broad concentration brighter core. A mag 15 star is off the WSW side [44" from center] and a mag 13.5 star is 1.4' NNW. UGC 10143 = VV 159a is the brightest member in the VV 159 chain (sextet) = Arp 324 (at least 8 in Arp's photo) in the core of AGC 2147.