EPSG systems

EPSG:26194 Merchich / Sahara Nord

Projected system (Lambert Conic Conformal (1SP)) in use: Western Sahara - north of 24.3°N. The full definition below, and conversion in one click.

System record
CodeEPSG:26194
NameMerchich / Sahara Nord
TypeProjected system — Lambert Conic Conformal (1SP)
Area of use Western Sahara - north of 24.3°N
Western Sahara - onshore north of 27grads North (24°18'N).
Bounds W -15,42° · S 24,29° · E -8,66° · N 27,67°
Countries Morocco
DatumMerchich
Ellipsoid Clarke 1880 (IGN) a = 6378249.2 m · 1/f = 293.466021294
Base geographic system EPSG:4261 — Merchich
Unit metre (X east, Y north)
Transformation to WGS 84 Merchich to WGS 84 (1) (EPSG:1166) — accuracy 7 m
ScopeEngineering survey, topographic mapping.
In CarteBuilt-in grid (code SN), with the reference cities of the guide.

Projection parameters

ParameterValueUnit
Latitude of natural origin29grad
Longitude of natural origin-6grad
Scale factor at natural origin0.999616304unity
False easting1200000metre
False northing400000metre

proj4 definition

+proj=lcc +lat_1=26.1 +lat_0=26.1 +lon_0=-5.4 +k_0=0.999616304 +x_0=1200000 +y_0=400000 +a=6378249.2 +b=6356515 +towgs84=31,146,47,0,0,0,0 +units=m +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:26194.

WKT (ESRI format, the .prj content)

PROJCS["Merchich_Sahara_Nord",GEOGCS["GCS_Merchich",DATUM["D_Merchich",SPHEROID["Clarke_1880_IGN",6378249.2,293.466021293627]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",1200000.0],PARAMETER["False_Northing",400000.0],PARAMETER["Central_Meridian",-5.4],PARAMETER["Standard_Parallel_1",26.1],PARAMETER["Scale_Factor",0.999616304],PARAMETER["Latitude_Of_Origin",26.1],UNIT["Meter",1.0]]

All systems — Morocco

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.