Astronomy: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 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
- ↑ 1.0 1.1 1.2 1.3 1.4 Dunlop, Storm (2005). Atlas of the Night Sky. Collins. ISBN 978-0-00-717223-8.
- ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 1317". https://cseligman.com/text/atlas/ngc13.htm#1317.
- ↑ "NED Search Results Regarding NGC 1317". https://ned.ipac.caltech.edu/cgi-bin/objsearch?objname=NGC+1317&extend=no&hconst=73&omegam=0.27&omegav=0.73&corr_z=1&out_csys=Equatorial&out_equinox=J2000.0&obj_sort=RA+or+Longitude&of=pre_text&zv_breaker=30000.0&list_limit=5&img_stamp=YES.
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