NGC 1156 is a dwarf irregular galaxy in the Aries constellation of the type ibm. 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. The AGES survey has discovered a candidate dark galaxy close to NGC 1156, one of only a few so far found.
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This article is an automated import of the Wikipedia article "NGC 1156", available at https://en.wikipedia.org/wiki/NGC_1156 . Text is licensed under CC BY-SA 4.0.