EPSG:4051

RGRDC 2005 / Congo TM zone 18

Available transformations
to EPSG:4326
No other targets exist for this CRS

Selected transformation

Method: Geocentric translations (geog2D domain)

Remarks: Approximation at the +/- 1m level assuming that RGRDC 2005 is equivalent to WGS 84 within the accuracy of the transformation.

Information source: OGP

Revision date: 2020-03-14

Attributes

Unit: metre

Geodetic CRS: RGRDC 2005

Datum: Reseau Geodesique de la RDC 2005

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: EPSG

Information source: "Revision du Tiers Meridional du Reseau Geodesique de la RDC", COPIREP Reclus project report, 2005.

Revision date: 2009-04-16

Center coordinates
808432.62 9066225.72

Projected bounds:
-191363.65 8480350.64
1821628.19 9622968.18

WGS84 bounds:
11.79 -13.46
29.81 -3.41

The Democratic Republic of the Congo (Zaire) - south of a line through Bandundu, Seke and Pweto - onshore and offshore.
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Definition: OGC Well Known Text

PROJCS["RGRDC 2005 / Congo TM zone 18",
    GEOGCS["RGRDC 2005",
        DATUM["Reseau_Geodesique_de_la_RDC_2005",
            SPHEROID["GRS 1980",6378137,298.257222101],
            TOWGS84[0,0,0,0,0,0,0]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4046"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",18],
    PARAMETER["scale_factor",0.9999],
    PARAMETER["false_easting",500000],
    PARAMETER["false_northing",10000000],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","4051"]]

Definition: OGC Well Known Text 2 (2019)

PROJCRS["RGRDC 2005 / Congo TM zone 18",
    BASEGEOGCRS["RGRDC 2005",
        DATUM["Reseau Geodesique de la RDC 2005",
            ELLIPSOID["GRS 1980",6378137,298.257222101,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",4046]],
    CONVERSION["Congo Transverse Mercator zone 18",
        METHOD["Transverse Mercator",
            ID["EPSG",9807]],
        PARAMETER["Latitude of natural origin",0,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",18,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",0.9999,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        PARAMETER["False easting",500000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8806]],
        PARAMETER["False northing",10000000,
            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["Cadastre, engineering survey."],
        AREA["The Democratic Republic of the Congo (Zaire) - south of a line through Bandundu, Seke and Pweto and between 17°E and 19°E."],
        BBOX[-8.11,17,-3.43,19]],
    ID["EPSG",4051]]

Definition: ESRI Well Known Text

PROJCS["RGRDC_2005_Congo_TM_Zone_18",
    GEOGCS["GCS_RGRDC_2005",
        DATUM["D_Reseau_Geodesique_de_la_RDC_2005",
            SPHEROID["GRS_1980",6378137.0,298.257222101]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["False_Easting",500000.0],
    PARAMETER["False_Northing",10000000.0],
    PARAMETER["Central_Meridian",18.0],
    PARAMETER["Scale_Factor",0.9999],
    PARAMETER["Latitude_Of_Origin",0.0],
    UNIT["Meter",1.0]]

Definition: PROJ.4

+proj=tmerc +lat_0=0 +lon_0=18 +k=0.9999 +x_0=500000 +y_0=10000000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:4051","+proj=tmerc +lat_0=0 +lon_0=18 +k=0.9999 +x_0=500000 +y_0=10000000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "RGRDC 2005 / Congo TM zone 18",
    "base_crs": {
        "name": "RGRDC 2005",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Reseau Geodesique de la RDC 2005",
            "ellipsoid": {
                "name": "GRS 1980",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257222101
            }
        },
        "coordinate_system": {
            "subtype": "ellipsoidal",
            "axis": [
                {
                    "name": "Geodetic latitude",
                    "abbreviation": "Lat",
                    "direction": "north",
                    "unit": "degree"
                },
                {
                    "name": "Geodetic longitude",
                    "abbreviation": "Lon",
                    "direction": "east",
                    "unit": "degree"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 4046
        }
    },
    "conversion": {
        "name": "Congo Transverse Mercator zone 18",
        "method": {
            "name": "Transverse Mercator",
            "id": {
                "authority": "EPSG",
                "code": 9807
            }
        },
        "parameters": [
            {
                "name": "Latitude of natural origin",
                "value": 0,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8801
                }
            },
            {
                "name": "Longitude of natural origin",
                "value": 18,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8802
                }
            },
            {
                "name": "Scale factor at natural origin",
                "value": 0.9999,
                "unit": "unity",
                "id": {
                    "authority": "EPSG",
                    "code": 8805
                }
            },
            {
                "name": "False easting",
                "value": 500000,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8806
                }
            },
            {
                "name": "False northing",
                "value": 10000000,
                "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": "Cadastre, engineering survey.",
    "area": "The Democratic Republic of the Congo (Zaire) - south of a line through Bandundu, Seke and Pweto and between 17°E and 19°E.",
    "bbox": {
        "south_latitude": -8.11,
        "west_longitude": 17,
        "north_latitude": -3.43,
        "east_longitude": 19
    },
    "id": {
        "authority": "EPSG",
        "code": 4051
    }
}

Definition: GeoServer

4051=PROJCS["RGRDC 2005 / Congo TM zone 18",GEOGCS["RGRDC 2005",DATUM["Reseau_Geodesique_de_la_RDC_2005",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4046"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",18],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",500000],PARAMETER["false_northing",10000000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","4051"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=0"
	"lon_0=18"
	"k=0.9999"
	"x_0=500000"
	"y_0=10000000"
	"ellps=GRS80"
	"towgs84=0,0,0,0,0,0,0"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=tmerc +lat_0=0 +lon_0=18 +k=0.9999 +x_0=500000 +y_0=10000000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs">
	<Layer srs="+proj=tmerc +lat_0=0 +lon_0=18 +k=0.9999 +x_0=500000 +y_0=10000000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4051, 'EPSG', 4051, '+proj=tmerc +lat_0=0 +lon_0=18 +k=0.9999 +x_0=500000 +y_0=10000000 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["RGRDC 2005 / Congo TM zone 18",GEOGCS["RGRDC 2005",DATUM["Reseau_Geodesique_de_la_RDC_2005",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4046"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",18],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",500000],PARAMETER["false_northing",10000000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","4051"]]');