EPSG:27500

ATF (Paris) / Nord de Guerre

Attributes

Unit: metre

Geodetic CRS: ATF (Paris)

Datum: Ancienne Triangulation Francaise (Paris)

Ellipsoid: Plessis 1817

Prime meridian: Paris RGS

Data source: EPSG

Revision date: 1995-06-02

Scope: Engineering survey, topographic mapping.

Area of use: France - Alsace.

Coordinate system: Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: m.

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SimpleMap

Center coordinates
484990.29 160543.01

Projected bounds:
432310.74 68819.1
537178.94 252601.05

WGS84 bounds:
6.84 47.42
8.23 49.07

France - Alsace.
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Definition: OGC Well Known Text

PROJCS["ATF (Paris) / Nord de Guerre",
    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"]],
    PROJECTION["Lambert_Conformal_Conic_1SP"],
    PARAMETER["latitude_of_origin",55],
    PARAMETER["central_meridian",6],
    PARAMETER["scale_factor",0.99950908],
    PARAMETER["false_easting",500000],
    PARAMETER["false_northing",300000],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","27500"]]

Definition: OGC Well Known Text 2 (2019)

PROJCRS["ATF (Paris) / Nord de Guerre",
    BASEGEOGCRS["ATF (Paris)",
        DATUM["Ancienne Triangulation Francaise (Paris)",
            ELLIPSOID["Plessis 1817",6376523,308.64,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Paris RGS",2.33720833333333,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",4901]],
    CONVERSION["Nord de Guerre",
        METHOD["Lambert Conic Conformal (1SP)",
            ID["EPSG",9801]],
        PARAMETER["Latitude of natural origin",55,
            ANGLEUNIT["grad",0.0157079632679489],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",6,
            ANGLEUNIT["grad",0.0157079632679489],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",0.99950908,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        PARAMETER["False easting",500000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8806]],
        PARAMETER["False northing",300000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8807]]],
    CS[Cartesian,2],
        AXIS["easting (X)",east,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["northing (Y)",north,
            ORDER[2],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Engineering survey, topographic mapping."],
        AREA["France - Alsace."],
        BBOX[47.42,6.84,49.07,8.23]],
    ID["EPSG",27500]]

Definition: ESRI Well Known Text

PROJCS["Nord_de_Guerre",
    GEOGCS["GCS_ATF_Paris",
        DATUM["D_ATF",
            SPHEROID["Plessis_1817",6376523.0,308.64]],
        PRIMEM["Paris_RGS",2.33720833333333],
        UNIT["Grad",0.0157079632679489]],
    PROJECTION["Lambert_Conformal_Conic"],
    PARAMETER["False_Easting",500000.0],
    PARAMETER["False_Northing",300000.0],
    PARAMETER["Central_Meridian",6.0],
    PARAMETER["Standard_Parallel_1",55.0],
    PARAMETER["Scale_Factor",0.99950908],
    PARAMETER["Latitude_Of_Origin",55.0],
    UNIT["Meter",1.0]]

Definition: PROJ.4

+proj=lcc +lat_1=49.5 +lat_0=49.5 +lon_0=5.4 +k_0=0.99950908 +x_0=500000 +y_0=300000 +a=6376523 +rf=308.64 +pm=2.33720833333333 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:27500","+proj=lcc +lat_1=49.5 +lat_0=49.5 +lon_0=5.4 +k_0=0.99950908 +x_0=500000 +y_0=300000 +a=6376523 +rf=308.64 +pm=2.33720833333333 +units=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "ATF (Paris) / Nord de Guerre",
    "base_crs": {
        "name": "ATF (Paris)",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Ancienne Triangulation Francaise (Paris)",
            "ellipsoid": {
                "name": "Plessis 1817",
                "semi_major_axis": 6376523,
                "inverse_flattening": 308.64
            },
            "prime_meridian": {
                "name": "Paris RGS",
                "longitude": 2.33720833333333
            }
        },
        "coordinate_system": {
            "subtype": "ellipsoidal",
            "axis": [
                {
                    "name": "Geodetic latitude",
                    "abbreviation": "Lat",
                    "direction": "north",
                    "unit": {
                        "type": "AngularUnit",
                        "name": "grad",
                        "conversion_factor": 0.0157079632679489
                    }
                },
                {
                    "name": "Geodetic longitude",
                    "abbreviation": "Lon",
                    "direction": "east",
                    "unit": {
                        "type": "AngularUnit",
                        "name": "grad",
                        "conversion_factor": 0.0157079632679489
                    }
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 4901
        }
    },
    "conversion": {
        "name": "Nord de Guerre",
        "method": {
            "name": "Lambert Conic Conformal (1SP)",
            "id": {
                "authority": "EPSG",
                "code": 9801
            }
        },
        "parameters": [
            {
                "name": "Latitude of natural origin",
                "value": 55,
                "unit": {
                    "type": "AngularUnit",
                    "name": "grad",
                    "conversion_factor": 0.0157079632679489
                },
                "id": {
                    "authority": "EPSG",
                    "code": 8801
                }
            },
            {
                "name": "Longitude of natural origin",
                "value": 6,
                "unit": {
                    "type": "AngularUnit",
                    "name": "grad",
                    "conversion_factor": 0.0157079632679489
                },
                "id": {
                    "authority": "EPSG",
                    "code": 8802
                }
            },
            {
                "name": "Scale factor at natural origin",
                "value": 0.99950908,
                "unit": "unity",
                "id": {
                    "authority": "EPSG",
                    "code": 8805
                }
            },
            {
                "name": "False easting",
                "value": 500000,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8806
                }
            },
            {
                "name": "False northing",
                "value": 300000,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8807
                }
            }
        ]
    },
    "coordinate_system": {
        "subtype": "Cartesian",
        "axis": [
            {
                "name": "Easting",
                "abbreviation": "X",
                "direction": "east",
                "unit": "metre"
            },
            {
                "name": "Northing",
                "abbreviation": "Y",
                "direction": "north",
                "unit": "metre"
            }
        ]
    },
    "scope": "Engineering survey, topographic mapping.",
    "area": "France - Alsace.",
    "bbox": {
        "south_latitude": 47.42,
        "west_longitude": 6.84,
        "north_latitude": 49.07,
        "east_longitude": 8.23
    },
    "id": {
        "authority": "EPSG",
        "code": 27500
    }
}

Definition: GeoServer

27500=PROJCS["ATF (Paris) / Nord de Guerre",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"]],PROJECTION["Lambert_Conformal_Conic_1SP"],PARAMETER["latitude_of_origin",55],PARAMETER["central_meridian",6],PARAMETER["scale_factor",0.99950908],PARAMETER["false_easting",500000],PARAMETER["false_northing",300000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","27500"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=lcc"
	"lat_1=49.5"
	"lat_0=49.5"
	"lon_0=5.4"
	"k_0=0.99950908"
	"x_0=500000"
	"y_0=300000"
	"a=6376523"
	"rf=308.64"
	"pm=2.33720833333333"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=lcc +lat_1=49.5 +lat_0=49.5 +lon_0=5.4 +k_0=0.99950908 +x_0=500000 +y_0=300000 +a=6376523 +rf=308.64 +pm=2.33720833333333 +units=m +no_defs +type=crs">
	<Layer srs="+proj=lcc +lat_1=49.5 +lat_0=49.5 +lon_0=5.4 +k_0=0.99950908 +x_0=500000 +y_0=300000 +a=6376523 +rf=308.64 +pm=2.33720833333333 +units=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 27500, 'EPSG', 27500, '+proj=lcc +lat_1=49.5 +lat_0=49.5 +lon_0=5.4 +k_0=0.99950908 +x_0=500000 +y_0=300000 +a=6376523 +rf=308.64 +pm=2.33720833333333 +units=m +no_defs +type=crs', 'PROJCS["ATF (Paris) / Nord de Guerre",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"]],PROJECTION["Lambert_Conformal_Conic_1SP"],PARAMETER["latitude_of_origin",55],PARAMETER["central_meridian",6],PARAMETER["scale_factor",0.99950908],PARAMETER["false_easting",500000],PARAMETER["false_northing",300000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","27500"]]');