NGC 3840

NGC 3840 is a spiral galaxy^[2] located about 320 million light-years away^[3] in the constellation Leo.^[4] The galaxy was discovered by astronomer Heinrich d'Arrest on May 8, 1864.^[5] NGC 3840 is a member of the Leo Cluster.^[6][7][8] The galaxy is rich in neutral atomic hydrogen (H I) and is not interacting with its environment.^[9]

ConstellationLeo

Right ascension11^h 43^m 58.9^s[1]

Declination20° 04′ 37″^[1]

Redshift0.024590^[1]

Quick facts Observation data (J2000 epoch), Constellation ...

NGC 3840
SDSS image of NGC 3840
Observation data (J2000 epoch)
Constellation	Leo
Right ascension	11h 43m 58.9s[1]
Declination	20° 04′ 37″[1]
Redshift	0.024590[1]
Heliocentric radial velocity	7372 km/s[1]
Distance	318 Mly (97.5 Mpc)[1]
Group or cluster	Leo Cluster
Apparent magnitude (V)	14.54[1]
Characteristics
Type	Sa[1]
Size	~105,400 ly (32.32 kpc) (estimated)[1]
Apparent size (V)	1.1 x 0.8[1]
Other designations
CGCG 97-91, IRAS 11413+2021, MCG 3-30-70, PGC 36477, UGC 6702[1]

Close

NGC 3840 is likely to be a low-luminosity AGN (LLAGN).^[10]