Korean 1985 / Modified West Belt

Republic of Korea (South Korea) - onshore. , accuracy 1.0 m, code 5191 (default) [7]

Selected transformation

Name: Korean 1985 to WGS 84 (1)

Method: Molodensky-Badekas (CF geog2D domain)

Remarks: Parameter values from Korean 1985 to KGD2002 (1) (code 5189). Assumes KGD2002 and WGS 84 can be considered the same to within the accuracy of the transformation.

Information source: OGP

Revision date: 2023-07-17

Attributes

Unit: metre

Geodetic CRS: Korean 1985

Datum: Korean Datum 1985

Ellipsoid: Bessel 1841

Prime meridian: Greenwich

Data source: EPSG

Information source: Korean Association of Surveying and Mapping.

Revision date: 2023-07-17

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

Remarks: Unofficial system replacing Korean 1985 / West Belt (code 2098) to correct 10.405" longitude difference and make grid for most practical purposes coincident with Tokyo 1892 / West Belt (code 5169). Replaced by KGD2002 / West Belt (code 5180).

Area of use: Republic of Korea (South Korea) - onshore between 124°E and 126°E.

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

Covered area powered by MapTiler

Center coordinates
450049.9 269060.03

Projected bounds:
156048.55 -39535.31
761090.31 587885.53

WGS84 bounds:
124.53 33.14
131.01 38.64

Republic of Korea (South Korea) - onshore.

Definition: OGC Well Known Text

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PROJCS["Korean 1985 / Modified West Belt",
    GEOGCS["Korean 1985",
        DATUM["Korean_Datum_1985",
            SPHEROID["Bessel 1841",6377397.155,299.1528128],
            TOWGS84[-145.907,505.034,685.756,-1.162,2.347,1.592,6.342]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4162"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",38],
    PARAMETER["central_meridian",125.002890277778],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",200000],
    PARAMETER["false_northing",500000],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","5173"]]

Definition: OGC Well Known Text 2 (2019)

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PROJCRS["Korean 1985 / Modified West Belt",
    BASEGEOGCRS["Korean 1985",
        DATUM["Korean Datum 1985",
            ELLIPSOID["Bessel 1841",6377397.155,299.1528128,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",4162]],
    CONVERSION["Korea Modified West Belt",
        METHOD["Transverse Mercator",
            ID["EPSG",9807]],
        PARAMETER["Latitude of natural origin",38,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",125.002890277778,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",1,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        PARAMETER["False easting",200000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8806]],
        PARAMETER["False northing",500000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8807]]],
    CS[Cartesian,2],
        AXIS["northing (X)",north,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["easting (Y)",east,
            ORDER[2],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Cadastre, engineering survey, topographic mapping (large and medium scale)."],
        AREA["Republic of Korea (South Korea) - onshore between 124°E and 126°E."],
        BBOX[33.99,124.53,38.04,126]],
    ID["EPSG",5173]]

Definition: ESRI Well Known Text

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PROJCS["Korean_1985_Modified_Korea_West_Belt",
    GEOGCS["GCS_Korean_Datum_1985",
        DATUM["D_Korean_Datum_1985",
            SPHEROID["Bessel_1841",6377397.155,299.1528128]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["False_Easting",200000.0],
    PARAMETER["False_Northing",500000.0],
    PARAMETER["Central_Meridian",125.002890277778],
    PARAMETER["Scale_Factor",1.0],
    PARAMETER["Latitude_Of_Origin",38.0],
    UNIT["Meter",1.0]]

Definition: PROJ.4

+proj=tmerc +lat_0=38 +lon_0=125.002890277778 +k=1 +x_0=200000 +y_0=500000 +ellps=bessel +towgs84=-145.907,505.034,685.756,-1.162,2.347,1.592,6.342 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:5173","+proj=tmerc +lat_0=38 +lon_0=125.002890277778 +k=1 +x_0=200000 +y_0=500000 +ellps=bessel +towgs84=-145.907,505.034,685.756,-1.162,2.347,1.592,6.342 +units=m +no_defs +type=crs");

Definition: JSON

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{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "Korean 1985 / Modified West Belt",
    "base_crs": {
        "name": "Korean 1985",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Korean Datum 1985",
            "ellipsoid": {
                "name": "Bessel 1841",
                "semi_major_axis": 6377397.155,
                "inverse_flattening": 299.1528128
            }
        },
        "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": 4162
        }
    },
    "conversion": {
        "name": "Korea Modified West Belt",
        "method": {
            "name": "Transverse Mercator",
            "id": {
                "authority": "EPSG",
                "code": 9807
            }
        },
        "parameters": [
            {
                "name": "Latitude of natural origin",
                "value": 38,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8801
                }
            },
            {
                "name": "Longitude of natural origin",
                "value": 125.002890277778,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8802
                }
            },
            {
                "name": "Scale factor at natural origin",
                "value": 1,
                "unit": "unity",
                "id": {
                    "authority": "EPSG",
                    "code": 8805
                }
            },
            {
                "name": "False easting",
                "value": 200000,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8806
                }
            },
            {
                "name": "False northing",
                "value": 500000,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8807
                }
            }
        ]
    },
    "coordinate_system": {
        "subtype": "Cartesian",
        "axis": [
            {
                "name": "Northing",
                "abbreviation": "X",
                "direction": "north",
                "unit": "metre"
            },
            {
                "name": "Easting",
                "abbreviation": "Y",
                "direction": "east",
                "unit": "metre"
            }
        ]
    },
    "scope": "Cadastre, engineering survey, topographic mapping (large and medium scale).",
    "area": "Republic of Korea (South Korea) - onshore between 124°E and 126°E.",
    "bbox": {
        "south_latitude": 33.99,
        "west_longitude": 124.53,
        "north_latitude": 38.04,
        "east_longitude": 126
    },
    "id": {
        "authority": "EPSG",
        "code": 5173
    }
}

Definition: GeoServer

5173=PROJCS["Korean 1985 / Modified West Belt",GEOGCS["Korean 1985",DATUM["Korean_Datum_1985",SPHEROID["Bessel 1841",6377397.155,299.1528128],TOWGS84[-145.907,505.034,685.756,-1.162,2.347,1.592,6.342]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4162"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",38],PARAMETER["central_meridian",125.002890277778],PARAMETER["scale_factor",1],PARAMETER["false_easting",200000],PARAMETER["false_northing",500000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","5173"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=38"
	"lon_0=125.002890277778"
	"k=1"
	"x_0=200000"
	"y_0=500000"
	"ellps=bessel"
	"towgs84=-145.907,505.034,685.756,-1.162,2.347,1.592,6.342"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=tmerc +lat_0=38 +lon_0=125.002890277778 +k=1 +x_0=200000 +y_0=500000 +ellps=bessel +towgs84=-145.907,505.034,685.756,-1.162,2.347,1.592,6.342 +units=m +no_defs +type=crs">
	<Layer srs="+proj=tmerc +lat_0=38 +lon_0=125.002890277778 +k=1 +x_0=200000 +y_0=500000 +ellps=bessel +towgs84=-145.907,505.034,685.756,-1.162,2.347,1.592,6.342 +units=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 5173, 'EPSG', 5173, '+proj=tmerc +lat_0=38 +lon_0=125.002890277778 +k=1 +x_0=200000 +y_0=500000 +ellps=bessel +towgs84=-145.907,505.034,685.756,-1.162,2.347,1.592,6.342 +units=m +no_defs +type=crs', 'PROJCS["Korean 1985 / Modified West Belt",GEOGCS["Korean 1985",DATUM["Korean_Datum_1985",SPHEROID["Bessel 1841",6377397.155,299.1528128],TOWGS84[-145.907,505.034,685.756,-1.162,2.347,1.592,6.342]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4162"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",38],PARAMETER["central_meridian",125.002890277778],PARAMETER["scale_factor",1],PARAMETER["false_easting",200000],PARAMETER["false_northing",500000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","5173"]]');

EPSG:5173