NGC 317 is a pair of interacting galaxies, consisting of a lenticular galaxy NGC 317A (also designated as PGC 3442) and a spiral galaxy NGC 317B (also designated as PGC 3445), in the constellation Andromeda. It was discovered on October 1, 1885 by Lewis Swift.
Two supernovae have been observed in NGC 317B: SN 1999gl (type II, mag. 16.2),Transient Name Server entry for SN 1999gl. Retrieved 31 March 2023. and SN 2014dj (type Ic, mag. 17).Transient Name Server entry for SN 2014dj. Retrieved 31 March 2023.
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