NGC 4540

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]

NGC 4540
Hubble Space Telescope image of 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]

See also

• List of NGC objects (4001–5000)

NGC 4540 (SDSS DR14)