# Orthographic

Name | Orthographic EPSG Code |
GeoTIFF Code | CT_Orthographic (21)
OGC WKT Name | Orthographic
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 |
False Easting | 6 | FalseEasting | false_easting | Linear |
False Northing | 7 | FalseNorthing | false_northing | Linear |

### Notes

I get slightly different results from PROJ.4, and PCI (GCTP)'s results as noted in Random Issues.

### PROJ.4 Organization

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