| NGC 493 | |
|---|---|
 SDSS view of NGC 493 | |
| Observation data (J2000epoch) | |
| Constellation | Cetus |
| Right ascension | 01h 22m 09.54s |
| Declination | +00° 56′ 47.5″ |
| Redshift | 0.007799 ± 0.000017 |
| Heliocentric radial velocity | (+2329 ± 5) km/s |
| Distance | 90Mly |
| Apparent magnitude (V) | 12.2 |
| Characteristics | |
| Type | SAB(s)cd? |
| Apparent size (V) | 4.3′ × 1.7′ |
| Other designations | |
| PGC 4979,GC 281,UGC 914,2MASS J01220898+0056432,Z 385.84,MGC +00-04-099,IRAS 01195+0041,H 3.594,h 105 | |
NGC 493, also occasionally referred to asPGC 4979 orGC 281, is abarred spiral galaxy in the constellationCetus.[1] It is located approximately 90 millionlight-years fromEarth and was discovered on December 20, 1786 by astronomerWilliam Herschel.[2] It was later also observed by his son,John Herschel.John Dreyer, creator of theNew General Catalogue, described the galaxy as "very faint, large, much extended 60°" with "a little brighter middle".[3]
Threesupernovae have been observed in NGC 493:
Media related toNGC 493 at Wikimedia Commons
