| NGC 315 | |
|---|---|
 SDSS image of NGC 315 | |
| Observation data (J2000epoch) | |
| Constellation | Pisces |
| Right ascension | 00h 57m 48.8833s[1] |
| Declination | +30° 21′ 08.811″[1] |
| Redshift | 0.016485[1] |
| Heliocentric radial velocity | 4,942 km/s[1] |
| Distance | 223.0 ± 15.7 Mly (68.36 ± 4.80 Mpc)[1] |
| Group orcluster | NGC 315 Group |
| Apparent magnitude (V) | 12.2[1] |
| Characteristics | |
| Type | E[2] |
| Size | ~196,400 ly (60.21 kpc) (estimated)[1] |
| Apparent size (V) | 2.08' × 1.54'[1] |
| Other designations | |
| B2 0055+30,TXS 0055+300,GB6 J0057+3021, HOLM 028A,IRAS F00550+3004,2MASX J00574891+3021083,UGC 597,MCG +05-03-031,PGC 3455,CGCG 501-052[1] | |
NGC 315 is a massiveelliptical galaxy in the constellationPisces. Its velocity with respect to thecosmic microwave background is 4635 ± 22 km/s, which corresponds to aHubble distance of 223.0 ± 15.7 Mly (68.36 ± 4.80 Mpc).[1] In addition, eightnon-redshift measurements give a distance of 208.58 ± 22.28 Mly (63.950 ± 6.830 Mpc).[3] It was discovered byGerman-British astronomerWilliam Herschel on September 11, 1784.[4]
TheSIMBAD database lists NGC 315 as aLINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms.[5]
According to A.M. Garcia, NGC 315 is the namesake of the NGC 315 Group (also known asLGG 14). This group contains 42 galaxies, includingNGC 226,NGC 243,NGC 262,NGC 266,NGC 311,NGC 338,IC 43,IC 66, ANDIC 69, among others.[6] NGC 315, along with triple starNGC 313, and starNGC 316 are listed together asHolm 28 inErik Holmberg'sA Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937.[7]
The shape of NGC 315 is atriaxial ellipsoid that is highly prolate; its middle-to-long axis ratio is 0.854 and short-to-long axis ratio is 0.833. It has a stellar mass of1.5×1012M☉. At the center of the galaxy is asupermassive black hole with a mass of3.0×109M☉.[8]
Media related toNGC 315 at Wikimedia Commons | Thiselliptical galaxy article is astub. You can help Wikipedia byadding missing information. |
