NGC 317

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]

NGC 317
SDSS image of NGC 317
Observation data (J2000 epoch)
Constellation	Andromeda
Right ascension	00h 57m 39.7s[1]
Declination	+43° 47′ 47″[1]
Redshift	0.018109[1]
Heliocentric radial velocity	5,429 km/s[1]
Apparent magnitude (V)	13.8[1]
Characteristics
Type	S0 + Sb[1]
Other designations
CGCG 536-013, PGC 3442 + PGC 3445.[1]

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. "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.