| NGC 1156 | |
| Epoch: | J2000 |
| Type: | IB(s)m[1] |
| Z: | 375 ± 1 km/s |
| Appmag V: | 12.3 |
| Size V: | 3.3 × 2.5 |
| Constellation Name: | Aries |
| Names: | UGC 2455, PGC 11329 |
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.
It has a H II nucleus.[2]
The AGES survey has discovered a candidate dark galaxy close to NGC 1156, one of only a few so far found.