EPSG:3321

IGC 1962 / Congo TM zone 18

Attributes

Unit: metre

Geodetic CRS: IGC 1962 6th Parallel South

Datum: IGC 1962 Arc of the 6th Parallel South

Ellipsoid: Clarke 1880 (RGS)

Prime meridian: Greenwich

Data source: EPSG

Information source: Institut Geographique du Congo.

Revision date: 2005-09-30

Scope: Cadastre, engineering survey, topographic mapping (medium scale).

Area of use: The Democratic Republic of the Congo (Zaire) - adjacent to 6th parallel traverse between 17°E and 19°E.

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

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SimpleMap

Center coordinates
500000.0 9514662.58

Projected bounds:
388878.64 9405116.28
611121.36 9624115.25

WGS84 bounds:
17.0 -5.38
19.0 -3.4

The Democratic Republic of the Congo (Zaire) - adjacent to 6th parallel traverse between 17°E and 19°E.
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Definition: OGC Well Known Text

PROJCS["IGC 1962 / Congo TM zone 18",
    GEOGCS["IGC 1962 6th Parallel South",
        DATUM["IGC_1962_Arc_of_the_6th_Parallel_South",
            SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465,
                AUTHORITY["EPSG","7012"]],
            AUTHORITY["EPSG","6697"]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4697"]],
    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","3321"]]

Definition: OGC Well Known Text 2 (2019)

PROJCRS["IGC 1962 / Congo TM zone 18",
    BASEGEOGCRS["IGC 1962 6th Parallel South",
        DATUM["IGC 1962 Arc of the 6th Parallel South",
            ELLIPSOID["Clarke 1880 (RGS)",6378249.145,293.465,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",4697]],
    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["(E)",east,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["(N)",north,
            ORDER[2],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Cadastre, engineering survey, topographic mapping (medium scale)."],
        AREA["The Democratic Republic of the Congo (Zaire) - adjacent to 6th parallel traverse between 17°E and 19°E."],
        BBOX[-5.38,17,-3.4,19]],
    ID["EPSG",3321]]

Definition: ESRI Well Known Text

PROJCS["IGC_1962_Congo_TM_Zone_18",
    GEOGCS["GCS_IGC_1962_6th_Parallel_South",
        DATUM["D_IGC_1962_Arc_of_the_6th_Parallel_South",
            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",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 +a=6378249.145 +rf=293.465 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:3321","+proj=tmerc +lat_0=0 +lon_0=18 +k=0.9999 +x_0=500000 +y_0=10000000 +a=6378249.145 +rf=293.465 +units=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "IGC 1962 / Congo TM zone 18",
    "base_crs": {
        "name": "IGC 1962 6th Parallel South",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "IGC 1962 Arc of the 6th Parallel South",
            "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": 4697
        }
    },
    "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": "E",
                "direction": "east",
                "unit": "metre"
            },
            {
                "name": "Northing",
                "abbreviation": "N",
                "direction": "north",
                "unit": "metre"
            }
        ]
    },
    "scope": "Cadastre, engineering survey, topographic mapping (medium scale).",
    "area": "The Democratic Republic of the Congo (Zaire) - adjacent to 6th parallel traverse between 17°E and 19°E.",
    "bbox": {
        "south_latitude": -5.38,
        "west_longitude": 17,
        "north_latitude": -3.4,
        "east_longitude": 19
    },
    "id": {
        "authority": "EPSG",
        "code": 3321
    }
}

Definition: GeoServer

3321=PROJCS["IGC 1962 / Congo TM zone 18",GEOGCS["IGC 1962 6th Parallel South",DATUM["IGC_1962_Arc_of_the_6th_Parallel_South",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465,AUTHORITY["EPSG","7012"]],AUTHORITY["EPSG","6697"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4697"]],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","3321"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=0"
	"lon_0=18"
	"k=0.9999"
	"x_0=500000"
	"y_0=10000000"
	"a=6378249.145"
	"rf=293.465"
	"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 +a=6378249.145 +rf=293.465 +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 +a=6378249.145 +rf=293.465 +units=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 3321, 'EPSG', 3321, '+proj=tmerc +lat_0=0 +lon_0=18 +k=0.9999 +x_0=500000 +y_0=10000000 +a=6378249.145 +rf=293.465 +units=m +no_defs +type=crs', 'PROJCS["IGC 1962 / Congo TM zone 18",GEOGCS["IGC 1962 6th Parallel South",DATUM["IGC_1962_Arc_of_the_6th_Parallel_South",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465,AUTHORITY["EPSG","7012"]],AUTHORITY["EPSG","6697"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4697"]],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","3321"]]');