Name Stereographic
GeoTIFF Code CT_Stereographic (14)
OGC WKT Name Stereographic
Supported By GeoTIFF, PROJ.4, OGC WKT

Projection Parameters

Name EPSG # GeoTIFF ID OGC WKT Units Notes
Latitude of projection center 1 ProjCenterLat latitude_of_origin Angular
Longitude of projection center 2 ProjCenterLong central_meridian Angular
Scale factor at natural origin 5 ScaleAtNatOrigin scale_factor Unitless Defaults to 1.0 when not available.
False Easting 6 FalseEasting false_easting Linear
False Northing 7 FalseNorthing false_northing Linear


I don't know whether this is really fundamentally different than Oblique Stereographic. See Oblique Stereographic for more information.

The GeoTIFF formula doesn't include a scale, but I don't see why it shouldn't. Mapinfo, and GCTP seem to include a scale, so I am adding it to the official formulation even though GeoTIFF hasn't normally included it.

PROJ.4 Organization

  +proj=stere +lat_0=Latitude at projection center 
              +lon_0=Longitude at projection center
              +x_0=False Easting
              +y_0=False Northing