| VV 166 | |
|---|---|
 | |
| Observation data (Epoch ) | |
| Constellation(s) | Andromeda |
| Right ascension | main group 00h 18m 30s cluster center 00h 18m 45s |
| Declination | main group 30° 03′ 00″ cluster center 30° 00′ 00″ |
| Number of galaxies | 40 (confirmed) 60+ (possible)[1] |
| Richness class | Group 0/1 |
| Bautz–Morgan classification | type II/III |
| Velocity dispersion | ~6750[1] |
| Redshift | 0.019 to 0.025 |
| Distance | ~300 mly |
| Other designations | |
| [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.[2] 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.
- ^ a b Cite error: The named reference
redshiftwas invoked but never defined (see the help page). - ^ Seligman, Courtney. "New General Catalog Objects: NGC 50 - NGC 99". Cseligman.com. Retrieved 18 May 2014.