| NGC 508 | |
|---|---|
 SDSS view of NGC 508 | |
| Observation data (J2000[1]epoch) | |
| Constellation | Pisces[2] |
| Right ascension | 01h 23m 40.6s[3] |
| Declination | +33° 16′ 49″[3] |
| Redshift | 0.01835 ± 0.00007[1] |
| Heliocentric radial velocity | (5451 ± 21) km/s[1] |
| Distance | 247Mly[4] |
| Apparent magnitude (V) | 13.1[2] |
| Apparent magnitude (B) | 14.1[2] |
| Characteristics | |
| Type | E[2] |
| Apparent size (V) | 1.1' × 1.1'[2] |
| Other designations | |
| PGC 5099,UGC 939,GC 295,MGC +05-04-045,2MASS J01234058+3316502[1][5] | |
NGC 508, also occasionally referred to asPGC 5099 orUGC 939, is anelliptical galaxy in the constellationPisces.[2] It is located approximately 247 million light-years from theSolar System[4] and was discovered on 12 September 1784 byBritishastronomerWilliam Herschel.[5][6]
Herschel discovered NGC 508 along with NGC 507 and described the objects as "Two. Both eF, S, but unequal.". His observed position was catalogued and is accurate.[6]John Louis Emil Dreyer, creator of theNew General Catalogue, described the galaxy as "very faint, small, northern of two", with the other object beingNGC 507.[5]
The galaxy has an apparent size of 1.1 × 1.1 arcmins and arecessional velocity of 5525 kilometers per second. It is thought to be a group member with NGC 507, but as there is no evidence ofinteraction between the objects, the two are not necessarily a physical pair. Although NGC 508 is usually treated as part of Arp 229, the description of the Arp-galaxy only applies to the larger NGC 507. Therefore, the term Arp 229 should only be used as an alternative designation for NGC 507.[5]
