Hydra-Centaurus Supercluster

Hydra-Centaurus Supercluster
Three-dimensional map of the Hydra Supercluster
Observation data (Epoch J2000)
Right ascension	12h 48m 49.3s
Declination	−41° 18′ 40″
Distance (co-moving)	~54 Mpc (176 Mly)
Other designations
SCI 128
See also: Galaxy groups, Galaxy clusters, List of superclusters

The Hydra-Centaurus Supercluster (SCl 128), or the Hydra and Centaurus Superclusters, is a supercluster in two parts, the closest neighbour of Virgo Supercluster.

The cluster includes four large galaxy clusters in the Centaurus part

and the proximate

Apart from the central clusters, which are 150 to 200 millions of light years away, several smaller clusters belong to the group.

Within the proximity of this supercluster lies the Great Attractor, dominated by the Norma Cluster (Abell 3627). This massive cluster of galaxies exerts a large gravitational force, causing all matter within 50 Mpc to experience a bulk flow of 600 km/s toward the Norma Cluster

A 2014 announcement says that the Centaurus Supercluster (Hydra-Centaurus) is just a lobe in a greater supercluster, Laniakea, that is centered on the Great Attractor. That supercluster would include the Virgo Supercluster, therefore including the Milky Way where Earth resides.

Coordinates: 12^h 48^m 49.3^s, −41° 18′ 40″