NGC 3656
| NGC 3656 | |
|---|---|
NGC 3656 by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major |
| Right ascension | 11h 23m 38.7s |
| Declination | +53° 50′ 32″ |
| Redshift | 0.009640 ± 0.000037 |
| Heliocentric radial velocity | 2,890 ± 11 km/s |
| Distance | 139 Mly (42.6 Mpc) |
| Apparent magnitude (V) | 12.3 |
| Characteristics | |
| Type | (R')I0: pec |
| Apparent size (V) | 1.6′ × 1.6′ |
| Notable features | Merger remnant |
| Other designations | |
| UGC 6403, Arp 155, VV 22a, CGCG 268-029, MCG +09-19-063, PGC 34989 | |
NGC 3656 is a peculiar galaxy formed by the collision of two galaxies in the constellation of Ursa Major. It is located about 135 million light years away from Earth, which means, given its apparent dimensions, that NGC 3656 is approximately 70,000 light years across. It was discovered by William Herschel on April 14, 1789.