NGC 4495 | |
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![]() NGC 4495 imaged by theCerro Tololo Inter-American Observatory | |
Observation data (J2000epoch) | |
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] |
NGC 4495 is aspiral galaxy in theconstellation ofComa Berenices. Its velocity with respect to thecosmic microwave background is 4850 ± 20 km/s, which corresponds to aHubble distance of 233.3 ± 16.4 Mly (71.54 ± 5.02 Mpc).[1] Additionally, 31non-redshift measurements give a distance of 223.50 ± 3.58 Mly (68.526 ± 1.099 Mpc).[2] It was discovered byGerman-British astronomerWilliam Herschel on 13 March 1785.[3]
According to theSIMBAD database, NGC 4495 is aLINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms.[4]
Threesupernovae have been observed in NGC 4495: