EPSG:4901Geographic 2D
ATF (Paris)
Type
Geographic 2D
Unit
grad
Area of use
France - mainland onshore.
proj4 definition
+proj=longlat +a=6376523 +rf=308.64 +pm=2.33720833333333 +no_defs +type=crs
Well-Known Text (WKT)
GEOGCS["ATF (Paris)",DATUM["Ancienne_Triangulation_Francaise_Paris",SPHEROID["Plessis 1817",6376523,308.64,AUTHORITY["EPSG","7027"]],AUTHORITY["EPSG","6901"]],PRIMEM["Paris RGS",2.33720833333333,AUTHORITY["EPSG","8914"]],UNIT["grad",0.0157079632679489,AUTHORITY["EPSG","9105"]],AUTHORITY["EPSG","4901"]]