NGC 4495
Galaxy in the constellation Coma Berenices
From Wikipedia, the free encyclopedia
NGC 4495 is a spiral galaxy in the constellation of Coma Berenices. Its velocity with respect to the cosmic microwave background is 4850 ± 20 km/s, which corresponds to a Hubble distance of 233.3 ± 16.4 Mly (71.54 ± 5.02 Mpc).[1] Additionally, 31 non-redshift measurements give a distance of 223.50 ± 3.58 Mly (68.526 ± 1.099 Mpc).[2] It was discovered by German-British astronomer William Herschel on 13 March 1785.[3]
Right ascension12h 31m 22.9217s[1]
Declination+29° 08′ 11.472″[1]
| NGC 4495 | |
|---|---|
NGC 4495 imaged by the Cerro Tololo Inter-American Observatory | |
| Observation data (J2000 epoch) | |
| Constellation | Coma Berenices |
| Right ascension | 12h 31m 22.9217s[1] |
| Declination | +29° 08′ 11.472″[1] |
| Redshift | 0.015243[1] |
| Heliocentric radial velocity | 4570 ± 3 km/s[1] |
| Distance | 233.3 ± 16.4 Mly (71.54 ± 5.02 Mpc)[1] |
| Apparent magnitude (V) | 13.3[1] |
| Characteristics | |
| Type | Sab[1] |
| Size | ~104,000 ly (31.89 kpc) (estimated)[1] |
| Apparent size (V) | 1.4′ × 0.8′[1] |
| Other designations | |
| IRAS 12289+2924, 2MASX J12312290+2908109, UGC 7663, MCG +05-30-012, PGC 41438, CGCG 159-009[1] | |
According to the SIMBAD database, NGC 4495 is a LINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms.[4]
Supernovae
Three supernovae have been observed in NGC 4495:
