supergalactic coordinate system
(celestial coordinate system system based upon the supergalactic plane)
The supergalactic coordinate system is a
spherical coordinate system used for directions in the
fixed to the supergalactic plane, and the line intersecting that
plane with the galactic plane.
- supergalactic longitude: SGL or l "east" from the line along the intersection, basically galactic coordinates l = 47.37°, b = +6.32°.
- supergalactic latitude: SGB or b.
The supergalactic plane is a plane of nearby galaxy clusters
including the Virgo Cluster, the Great Attractor
and the Pisces-Perseus Supercluster.
(coordinate system,celestial sphere)
celestial coordinate system