NGC 4638
| NGC 4638 | |
|---|---|
Sloan Digital Sky Survey image of NGC 4638. | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 12h 42m 47.4s |
| Declination | 11° 26′ 33″ |
| Redshift | 0.003843 |
| Heliocentric radial velocity | 1152 km/s |
| Distance | 50.77 Mly (15.565 Mpc) |
| Group or cluster | Virgo Cluster |
| Apparent magnitude (V) | 12.1 |
| Characteristics | |
| Type | S0 |
| Size | ~42,800 ly (13.13 kpc) (estimated) |
| Apparent size (V) | 2.17 x 1.27 |
| Other designations | |
| NGC 4667, CGCG 70-229, CGCG 71-6, MCG 2-32-187, PGC 42728, UGC 7880, VCC 1938 | |
NGC 4638 is an edge-on lenticular galaxy located about 50 million light-years away in the constellation Virgo. NGC 4638 was discovered by astronomer William Herschel on March 15, 1784. The galaxy is a member of the Virgo Cluster.