NGC 1156 [SEP] constellation
NGC 1156
NGC 1156 is a dwarf irregular galaxy in the Aries constellation of the type . It is considered a "Magellanic"-type irregular. The galaxy has a larger than average core, and contains zones of contra-rotating gas. The counter-rotation is thought to be the result of tidal interactions with another gas rich galaxy some time in the past.
The AGES survey has discovered a candidate dark galaxy close to NGC 1156, one of only a few so far found.
It has a H II nucleus.
NGC 1023 Group
The NGC 1023 group is a group of galaxies about 20.6 million light-years away from Earth. It is a group in the Local Supercluster along with the Local Group. 
Members.
- Probable (dwarfs): DDO 024, DDO 025.
- Possible members: NGC 672, IC 1727, NGC 1156(?).
- Possible (dwarfs): DDO 011, DDO 017, DDO 019, DDO 022, DDO 026.
Map.
The location of the