EPSG systems

EPSG:9848 RGF93 v2b / CC48

Projected system (Lambert Conic Conformal (2SP)) in use: France - mainland - 47°N to 49°N. The full definition below, and conversion in one click.

System record
CodeEPSG:9848
NameRGF93 v2b / CC48
TypeProjected system — Lambert Conic Conformal (2SP)
Area of use France - mainland - 47°N to 49°N
France - mainland onshore between 47°N and 49°N.
Bounds W -4,87° · S 47,00° · E 8,23° · N 49,00°
Countries France
DatumReseau Geodesique Francais 1993 v2b
Ellipsoid GRS 1980 a = 6378137 m · 1/f = 298.257222101
Base geographic system EPSG:9782 — RGF93 v2b
Unit metre (X east, Y north)
Transformation to WGS 84 RGF93 v2b to WGS 84 (1) (EPSG:9792) — accuracy 1 m
ScopeCadastre, engineering survey.

Projection parameters

ParameterValueUnit
Latitude of false origin48degree
Longitude of false origin3degree
Latitude of 1st standard parallel47.25degree
Latitude of 2nd standard parallel48.75degree
Easting at false origin1700000metre
Northing at false origin7200000metre

proj4 definition

+proj=lcc +lat_0=48 +lon_0=3 +lat_1=47.25 +lat_2=48.75 +x_0=1700000 +y_0=7200000 +ellps=GRS80 +units=m +towgs84=0,0,0 +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:9848.

WKT (ESRI format, the .prj content)

PROJCS["RGF93_v2b_CC48",GEOGCS["RGF93_v2b",DATUM["Reseau_Geodesique_Francais_1993_v2b",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",1700000.0],PARAMETER["False_Northing",7200000.0],PARAMETER["Central_Meridian",3.0],PARAMETER["Standard_Parallel_1",47.25],PARAMETER["Standard_Parallel_2",48.75],PARAMETER["Latitude_Of_Origin",48.0],UNIT["Meter",1.0]]

All systems — France

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