NGC 1317

NGC 1317
The contrasting galaxies NGC 1316 and 1317
Observation data (J2000 epoch)
Constellation	Fornax
Right ascension	03h 38.5m [1]
Declination	−35° 27′ [1]
Distance	from 17 megaparsecs (55 Mly) to 26.9 megaparsecs (88 Mly)
Apparent magnitude  (V)	11.0 [1]
Characteristics
Type	SBa [1]
Apparent size  (V)	2.8′ × 2.4′ [1] (55,000 light-years in diameter)
Notable features	Large uncertain of distance
Other designations
ESO 357-23, IRAS 03208-3716, MCG -6-8-6, NGC 1318 and PGC 12653

NGC 1317 (also known as NGC 1318) is a barred spiral galaxy in the constellation Fornax, in the Fornax Cluster. It was discovered by Scottish astronomer James Dunlop on November 24, 1826. ^[2] It appears to be interacting with the much larger NGC 1316, but uncertainty in distance estimates and scales of tidal distortions make this uncertain. It is a member of the NGC 1316 subgroup, part of the Fornax Cluster. Its size is 2.8' x 2.4' which, at the average distance, gives a diameter of 55,000 light-years.

Distance estimates

NGC 1317's central region by HST

NGC 1317 has an uncertain distance. Based on redshift, the distance is 55.1 million light-years, but some other methods estimate a distance as large as 88.4 million light-years. The distance of this galaxy is therefore somewhere between 55 and 88 Mly, but its true distance is unknown. ^[3] The average distance between the two estimates is around 70 million light-years, which means NGC 1317 is also in the Fornax Cluster.

References

1. Dunlop, Storm (2005). Atlas of the Night Sky. Collins. ISBN   978-0-00-717223-8.
2. Seligman, Courtney. "New General Catalogue Objects: NGC 1317". Celestial Atlas. Retrieved 5 December 2025.
3. "NED Search Results Regarding NGC 1317". ned.ipac.caltech.edu.

External links

• Media related to NGC 1317 at Wikimedia Commons