The Supergalactic Coordinate System is a spherical coordinate system used for directions in the Celestial Sphere, fixed to the Supergalactic Plane, and the line intersecting that plane with the Galactic Plane. Spherical elements:
The Supergalactic Plane is a plane of nearby Galaxy Clusters including the Virgo Cluster, the Great Attractor and the Pisces-Perseus Supercluster. Referenced by: Celestial Coordinate System |