| Name | Gnomonic |
| EPSG Code | |
| GeoTIFF Code | CT_Gnomonic (19) |
| OGC WKT Name | Gnomonic |
| Supported By | GeoTIFF, PROJ.4 |
| 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 |
+proj=gnom +lat_0=Latitude at projection center
+lon_0=Longitude at projection center
+x_0=False Easting
+y_0=False Northing