NGC 4540 | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Coma Berenices |
Right ascension | 12h 34m 50.9s[1] |
Declination | 15° 33′ 06″[1] |
Redshift | 0.004306[1] |
Heliocentric radial velocity | 1291 km/s[1] |
Distance | 64 Mly[2] |
Group or cluster | Virgo Cluster |
Apparent magnitude (V) | 12.44[1] |
Characteristics | |
Type | SAB(rs)cd, Sy1[1] |
Size | ~39,120 ly (estimated)[1] |
Apparent size (V) | 1.9 x 1.5[1] |
Other designations | |
PGC 41876, UGC 7742, IRAS 12323+1549, MCG 3-32-74, CGCG 99-93, VCC 1588[1] |
NGC 4540 is a spiral galaxy with type 1 Seyfert activity[3] located about 64 million light-years away[4] in the constellation Coma Berenices.[5] NGC 4540 was discovered by astronomer William Herschel on March 21, 1784[6] and is a member of the Virgo Cluster.[7][8]