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.[2]

Two supernovae have been observed in NGC 317B: SN 1999gl (type II, mag. 16.2),[3] and SN 2014dj (type Ic, mag. 17).[4]

References

  1. ^ a b c d e f g "NASA/IPAC Extragalactic Database". Results for NGC 0317. Retrieved September 2, 2016.
  2. ^ "New General Catalog Objects: NGC 300 - 349". Cseligman. Retrieved October 26, 2016.
  3. ^ Transient Name Server entry for SN 1999gl. Retrieved 31 March 2023.
  4. ^ Transient Name Server entry for SN 2014dj. Retrieved 31 March 2023.


Allikas: https://en.wikipedia.org/wiki/NGC_317
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