### 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
celestial sphere,
fixed to the **supergalactic plane**, and the line intersecting that
plane with the galactic plane.
Spherical elements:

**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*)
http://en.wikipedia.org/wiki/Supergalactic_coordinate_system

http://astronomy.swin.edu.au/cosmos/S/Supergalactic+Coordinate+System

**Referenced by:**

celestial coordinate system

index