NGC 3842

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NGC 3842
Observation data (J2000 epoch)
Constellation Leo
Right ascension 11h 44m 02.2s[1]
Declination +19° 56′ 59.3″[1]
Redshift 0.021068
Helio radial velocity 6318 ± 9 km/s[1]
Apparent magnitude (V) 12.8[1]
Apparent size (V) 1,4' x 1,0'[1]
Other designations
UGC 6704, PGC 36487, MCG 3-30-72, ZWG 97.95,[1]
See also: Galaxy, List of galaxies

NGC 3842 is an elliptical galaxy in the constellation of Leo. It was discovered by William Herschel. It is notable for containing one of the largest black holes ever detected, reported to have a mass of 9.7 billion solar masses.[2] It is around 331 million light-years distant from Earth.


  1. ^ a b c d e f "NASA/IPAC Extragalactic Database". Results for NGC 3842. Retrieved 2011-12-05. 
  2. ^ Rincon, Paul (2011-12-05). "Team sees biggest black holes yet". Retrieved 2011-12-05. 

Coordinates: Sky map 11h 40m 44.2s, +22° 25′ 46″