| UGC 4457 | |
|---|---|
 Hubble Space Telescope image of UGC 4457 | |
| Observation data (J2000 epoch) | |
| Constellation | Cancer |
| Right ascension | 08h 31m 57.6s |
| Declination | +19° 12′ 41.4″ |
| Redshift | 0.037179 |
| Heliocentric radial velocity | 11,162 km/s |
| Distance | 500 Mly (153.3 Mpc) |
| Characteristics | |
| Type | SAB(rs)pec |
| Size | 290,000 ly |
| Apparent size (V) | 0.96' x 0.50' |
| Notable features | Interacting galaxy |
| Other designations | |
| UGC 4457 PGC 23935, Arp 58, IRAS 08290+1922, MCG +03-22-017, VV 413, LEDA 23935, Z 89-40 | |
UGC 4457 known as PGC 23935, is a barred spiral galaxy, containing an active galactic nucleus in the Cancer constellation. [1] [2] [3] It is located 500 million light-years away from the Solar System [3] and has a diameter of 290,000 light-years, [1] making it slightly more massive compared to the Milky Way. [4] The galaxy is moving away at a speed of 11,162 kilometers per second. [1]
UGC 4457 is interacting with the compact galaxy, PGC 23937. Together, they form Arp 58 and are classified under spiral galaxies that have small companions with high surface brightness. [5] In addition, this interacting galaxy pair is also an M51 type system. [6]
UGC 4457 shows disturbed spiral arms, indicating signs of velocity disturbance levels and regions of scattered ionized gas, typically normal for interacting galaxies. A faint spiral bridge can be seen thus representing the remains of an older mode of spiral waves. [7]
