NGC 4457
NGC 4457 is an intermediate spiral galaxy located about 55 million light-years away in the constellation of Virgo. It is also classified as a LINER galaxy, a class of active galaxy defined by their spectral line emissions. NGC 4457 Is inclined by about 33°. It was discovered by astronomer William Herschel on February 23, 1784. Despite being listed in the Virgo Cluster Catalog as VCC 1145, NGC 4457 is a member of the Virgo II Groups which form an extension of the Virgo cluster.
| NGC 4457 | |
|---|---|
SDSS image of NGC 4457 | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 12h 28m 59.0s |
| Declination | 03° 34′ 14″ |
| Redshift | 0.002942 |
| Heliocentric radial velocity | 882 km/s |
| Distance | 54,801,600 ly |
| Group or cluster | Virgo II Groups |
| Apparent magnitude (V) | 11.76 |
| Characteristics | |
| Type | (R)SAB(s)0/a, LINER |
| Size | ~ 38,687.32 ly |
| Apparent size (V) | 2.7 × 2.3 |
| Other designations | |
| CGCG 42-124, IRAS 12264+0350, MCG 1-32-75, PGC 41101, UGC 7609, VCC 1145 | |
NGC 4457 may have had a recent minor merger with another galaxy.
On July 1 2020, an astronomical transient was discovered in NGC 4457 by astronomer Kiochi Itagaki and confirmed by ASAS-SN. Spectroscopic classification determined the object to be a Type Ia Supernova, SN 2020nvb.