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Centaurus A/M83 Group
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Centaurus A/M83 group
The Centaurus A galaxy is the largest and most massive galaxy in the group
Observation data (Epoch )
Constellation(s)
Hydra, Centaurus, & Virgo
Right ascension
13h 20m
Declination
-44° 58'
Number of galaxies
44
Brightest member
Centaurus A
Other designations
NGC 5128 Group, Centaurus A Group, LGG 344
See also: Galaxy groups and clusters, List of galaxy clusters
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The Centaurus A/M83 Group is a complex group of galaxies in the constellations Hydra, Centaurus, and Virgo. The group may be roughly divided into two subgroups. The Cen A Subgroup, at a distance of 11.9 Mly (3.66 Mpc), is centered around Centaurus A, a nearby radio galaxy. The M83 Subgroup, at a distance of 14.9 Mly (4.56 Mpc), is centered around the Messier 83 (M83), a face-on spiral galaxy. This group is sometimes identified as one group and sometimes identified as two groups. Hence, some references will refer to two objects named the Centaurus A Group and the M83 Group. However, the galaxies around Centaurus A and the galaxies around M83 are physically close to each other, and both subgroups appear not to be moving relative to each other.The Centaurus A/M83 Group is part of the Virgo Supercluster, the local supercluster of which the Local Group is an outlying member.
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