VV 166, sometimes also called the NGC 70 Group or Arp 113, is a galaxy group in Andromeda. The main group was discovered in 1784 by William Herschel, who listed the galaxies as a single object. Later, in the 1880s, John Louis Emil Dreyer managed to discern some of the galaxies in this region and cataloged them. The prominent elliptical galaxy in the region, NGC 68, is probably not a member of the group.
Superimposed on the group is a smaller cluster around 220 Mly away, which includes AGC 102760, UGC 152, and UGC 166.
Members
galaxy RA DEC redshift size (ly) distance (mly) NGC 67 0.020734 40,000 275 NGC 67a 0.022162 35,000 300 NGC 68 0.01913 90,000 260 NGC 69 0.022285 80,000 300 NGC 70 0.023907 180,000 320 NGC 71 0.022339 130,000 300 NGC 72 0.024213 120,000 325 NGC 72a 0.022399 25,000 300 NGC 74 0.023646 65,000 315 GALEXASC J001817.48+295854.3 0.024981 30,000 335 PGC 1183 0.020374 70,000 275 PGC 1163 0.021885 75,000 295 2MASX J00174636+2957409 0.024113 60,000 325 2MASX J00183652+2955586 0.021475 30,000 290 2MASX J00181971+2954372 0.022192 50,000 300 2MASX J00181589+2954145 0.024093 45,000 325 2MASX J00191196+3000506 0.023456 45,000 315 2MASX J00191966+3005286 0.02389 60,000 320 2MASX J00183355+2950272 0.020981 30,000 285 2MASX J00174173+2951151 0.022359 35,000 300 PGC 1138 0.020988 55,000 285 PGC 1119 0.023116 80,000 310 NGC 76 0.02444 120,000 330 AGC 102761 0.023590 10,000 320 2MASX J00164915+3010462 0.024133 40,000 325 PGC 1266 0.022339 45,000 300 2MASX J00181849+2942002 0.022749 45,000 305 2MASX J00194032+2949286 0.025621 50,000 345 PGC 1090 0.021331 85,000 290 PGC 1220 0.02408 50,000 325 2MASX J00160018+3002561 0.022676 45,000 305 AGC 100116 0.022379 35,000 305 PGC 1084 0.021148 55,000 290 2MASX J00203207+3003013 0.021058 35,000 285
References