NGC 317 explained

NGC 317
Epoch:	J2000
Ra:	^[1]
Constellation Name:	Andromeda
Z:	0.018109
H Radial V:	5,429 km/s
Type:	S0 + Sb
Appmag V:	13.8
Names:	CGCG 536-013, PGC 3442 + PGC 3445.

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]

Notes and References

1. Web site: NASA/IPAC Extragalactic Database . Results for NGC 0317 . September 2, 2016.
2. Web site: New General Catalog Objects: NGC 300 - 349. Cseligman. October 26, 2016.
3. https://www.wis-tns.org/object/1999gl Transient Name Server entry for SN 1999gl.
4. https://www.wis-tns.org/object/2014dj Transient Name Server entry for SN 2014dj.