# Stereographic

Name | Stereographic
EPSG Code |
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 |

### Notes

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