NGC 4559
| NGC 4559 | |
|---|---|
NGC 4559 imaged by the Sloan Digital Sky Survey | |
| Observation data (J2000 epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 12h 35m 57.6285s |
| Declination | +27° 57′ 35.851″ |
| Redshift | 0.002715±0.000002 |
| Heliocentric radial velocity | 814 ± 1 km/s |
| Distance | 24.56 ± 1.58 Mly (7.530 ± 0.483 Mpc) |
| Apparent magnitude (V) | 10.4 |
| Characteristics | |
| Type | SAB(rs)cd |
| Size | ~92,900 ly (28.48 kpc) (estimated) |
| Apparent size (V) | 10.7′ × 4.4′ |
| Other designations | |
| HOLM 423A, IRAS 12334+2814, UGC 7766, MCG +05-30-030, PGC 42002, CGCG 159-024, C 36 | |
NGC 4559 (also known as Caldwell 36) is an intermediate spiral galaxy with a weak inner ring structure in the constellation Coma Berenices. Its velocity with respect to the cosmic microwave background is 1,096±20 km/s, which corresponds to a Hubble distance of 52.7 ± 3.8 Mly (16.17 ± 1.17 Mpc). However, 26 non-redshift measurements give a much closer distance of 24.56 ± 1.58 Mly (7.530 ± 0.483 Mpc). It was discovered by German-British astronomer William Herschel on 11 April 1785.
NGC 4559 is a member of the Coma I Group.