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Map projections and coordinate systems > Supported map projections


Release 9.2
Last modified August 3, 2007
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This projection is conformal.

Illustration of the Stereographic projection

Projection method

Planar perspective projection, viewed from the point on the globe opposite the point of tangency. Stereographic projects points on a spheroid directly to the plane.
Learn about the Double Stereographic projection
All meridians and parallels are shown as circular arcs or straight lines. Graticular intersections are 90°. In the equatorial aspect, the parallels curve in opposite directions on either side of the equator. In the oblique case, only the parallel with the opposite sign to the central latitude is a straight line; other parallels are concave toward the poles on either side of the straight parallel.

Point of contact

A single point anywhere on the globe.

Linear graticules



Conformal. Local shapes are accurate.


True scale at center with distortion increasing with distance.


Directions are accurate from the center. Local angles are accurate everywhere.


Scale increases with distance from the center.


Normally limited to one hemisphere. Portions of the outer hemisphere may be shown, but with rapidly increasing distortion.

Uses and applications

The oblique aspect has been used to map circular regions on the moon, Mars, and Mercury.






Type 1 parameters

Type 2 parameters

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