| VV 166 | |
| Constellation: | Andromeda |
| Ra: | main group cluster center |
| Dec: | main group cluster center |
| Member No: | 40 (confirmed) 60+ (possible) |
| Richness: | Group 0/1 |
| Bmtype: | type II/III |
| Velocity Dispersion: | ~6750 |
| Redshift: | 0.019 to 0.025 |
| Distance: | ~300 mly |
| Other Names: | [M98j] 003, VV 166, RSCG 01, WBL 007, USCG U012, RASSCALS SRGb 062, PCC S34-115, HOLM 006, SRGb 062, DOC SRGb 062, WP 01, PPS2 060, HDCE 0011 |
VV 166, sometimes also called the NGC 70 galaxy group or Arp 113, is a cluster of galaxies 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.[1] 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.
| galaxy | RA | DEC | redshift | size (ly) | distance (mly) | |
|---|---|---|---|---|---|---|
| 0.020734[2] | 40,000 | 275[3] | ||||
| 0.022162 | 35,000 | 300 | ||||
| 0.01913 | 90,000 | 260 | ||||
| 0.022285 | 80,000 | 300 | ||||
| 0.023907 | 180,000 | 320 | ||||
| 0.022339 | 130,000 | 300 | ||||
| 0.024213 | 120,000 | 325 | ||||
| NGC 72a | 0.022399 | 25,000 | 300 | |||
| 0.023646 | 65,000 | 315 | ||||
| GALEXASC J001817.48+295854.3 | 0.024981 | 30,000[4] | 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 |