| NGC 251 | |
|---|---|
SDSS image of NGC 251
| |
| Observation data (J2000 epoch) | |
| Constellation | Pisces |
| Right ascension | 00h47m 54.031s[1] |
| Declination | +19° 35′ 48.51″[1] |
| Redshift | 0.015184[2] |
| Heliocentric radial velocity | 4552 km/s[2] |
| Distance | 204.36 ± 12.64 Mly (62.657 ± 3.876 Mpc)[2] |
| Apparent magnitude (B) | 14.6[3] |
| Characteristics | |
| Type | Sc[2] |
| Size | 148,600 ly (45,570 pc)[2][note 1] |
| Apparent size (V) | 2.4′ × 1.9′[2] |
| Other designations | |
| UGC 490, MGC+03-03-003, PGC 2806[3] | |
NGC 251 is a spiral galaxy in the constellationofPisces. It was discovered on October 15, 1784, by Frederick William Herschel.
One supernova has been observed in NGC 251: SN 2023rky (type II, mag. 18.6).[4]
Media related to NGC 251 at Wikimedia Commons
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