EPSG:3339

IGCB 1955 / Congo TM zone 12

Transform Get position on a map

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

  • The Democratic Republic of the Congo (Zaire) , accuracy 5.0 m, code 15787 (default) [3]

Selected transformation

Method: Geocentric translations (geog2D domain)

Remarks: Derived by Topnav in 1991 at station TSH 85.

Information source: Petrofina

Revision date: 2020-03-14

Attributes

Unit: metre

Geodetic CRS: IGCB 1955

Datum: Institut Geographique du Congo Belge 1955

Ellipsoid: Clarke 1880 (RGS)

Prime meridian: Greenwich

Data source: EPSG

Information source: IGN Paris

Revision date: 2005-11-28

Scope: Engineering survey, topographic mapping.

Remarks: Oil industry operations used IGBC 1955 / UTM zone 33S (code 3342).

Area of use: The Democratic Republic of the Congo (Zaire) - onshore west of 13°E.

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

Covered area powered by MapTiler MapTiler logo
SimpleMap

Center coordinates
746864.01 9429215.56

Projected bounds:
518956.07 9330475.31
975659.41 9526946.88

WGS84 bounds:
12.17 -6.04
16.28 -4.28

The Democratic Republic of the Congo (Zaire) - Lower Congo (Bas Congo)
MapTiler banner

Definition: OGC Well Known Text

PROJCS["IGCB 1955 / Congo TM zone 12",
    GEOGCS["IGCB 1955",
        DATUM["Institut_Geographique_du_Congo_Belge_1955",
            SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],
            TOWGS84[-79.9,-158,-168.9,0,0,0,0]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4701"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",12],
    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","3339"]]

Definition: OGC Well Known Text 2 (2019)

PROJCRS["IGCB 1955 / Congo TM zone 12",
    BASEGEOGCRS["IGCB 1955",
        DATUM["Institut Geographique du Congo Belge 1955",
            ELLIPSOID["Clarke 1880 (RGS)",6378249.145,293.465,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",4701]],
    CONVERSION["Congo Transverse Mercator zone 12",
        METHOD["Transverse Mercator",
            ID["EPSG",9807]],
        PARAMETER["Latitude of natural origin",0,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",12,
            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["(E)",east,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["(N)",north,
            ORDER[2],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Engineering survey, topographic mapping."],
        AREA["The Democratic Republic of the Congo (Zaire) - onshore west of 13°E."],
        BBOX[-6.04,12.17,-4.67,13.01]],
    ID["EPSG",3339]]

Definition: ESRI Well Known Text

PROJCS["IGCB_1955_Congo_TM_Zone_12",
    GEOGCS["GCS_IGCB_1955",
        DATUM["D_Institut_Geographique_du_Congo_Belge_1955",
            SPHEROID["Clarke_1880_RGS",6378249.145,293.465]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["False_Easting",500000.0],
    PARAMETER["False_Northing",10000000.0],
    PARAMETER["Central_Meridian",12.0],
    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=12 +k=0.9999 +x_0=500000 +y_0=10000000 +a=6378249.145 +rf=293.465 +towgs84=-79.9,-158,-168.9,0,0,0,0 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:3339","+proj=tmerc +lat_0=0 +lon_0=12 +k=0.9999 +x_0=500000 +y_0=10000000 +a=6378249.145 +rf=293.465 +towgs84=-79.9,-158,-168.9,0,0,0,0 +units=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "IGCB 1955 / Congo TM zone 12",
    "base_crs": {
        "name": "IGCB 1955",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Institut Geographique du Congo Belge 1955",
            "ellipsoid": {
                "name": "Clarke 1880 (RGS)",
                "semi_major_axis": 6378249.145,
                "inverse_flattening": 293.465
            }
        },
        "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": 4701
        }
    },
    "conversion": {
        "name": "Congo Transverse Mercator zone 12",
        "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": 12,
                "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": "E",
                "direction": "east",
                "unit": "metre"
            },
            {
                "name": "Northing",
                "abbreviation": "N",
                "direction": "north",
                "unit": "metre"
            }
        ]
    },
    "scope": "Engineering survey, topographic mapping.",
    "area": "The Democratic Republic of the Congo (Zaire) - onshore west of 13°E.",
    "bbox": {
        "south_latitude": -6.04,
        "west_longitude": 12.17,
        "north_latitude": -4.67,
        "east_longitude": 13.01
    },
    "id": {
        "authority": "EPSG",
        "code": 3339
    }
}

Definition: GeoServer

3339=PROJCS["IGCB 1955 / Congo TM zone 12",GEOGCS["IGCB 1955",DATUM["Institut_Geographique_du_Congo_Belge_1955",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-79.9,-158,-168.9,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4701"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",12],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","3339"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=0"
	"lon_0=12"
	"k=0.9999"
	"x_0=500000"
	"y_0=10000000"
	"a=6378249.145"
	"rf=293.465"
	"towgs84=-79.9,-158,-168.9,0,0,0,0"
	"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=12 +k=0.9999 +x_0=500000 +y_0=10000000 +a=6378249.145 +rf=293.465 +towgs84=-79.9,-158,-168.9,0,0,0,0 +units=m +no_defs +type=crs">
	<Layer srs="+proj=tmerc +lat_0=0 +lon_0=12 +k=0.9999 +x_0=500000 +y_0=10000000 +a=6378249.145 +rf=293.465 +towgs84=-79.9,-158,-168.9,0,0,0,0 +units=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 3339, 'EPSG', 3339, '+proj=tmerc +lat_0=0 +lon_0=12 +k=0.9999 +x_0=500000 +y_0=10000000 +a=6378249.145 +rf=293.465 +towgs84=-79.9,-158,-168.9,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["IGCB 1955 / Congo TM zone 12",GEOGCS["IGCB 1955",DATUM["Institut_Geographique_du_Congo_Belge_1955",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-79.9,-158,-168.9,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4701"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",12],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","3339"]]');