EPSG:5178

Korean 1985 / Unified CS

Transform Get position on a map

Available transformations
to EPSG:4737
EPSG:4737 - KGD2002

  • Republic of Korea (South Korea) - onshore. , accuracy 1.0 m, code 5189 (default) [7]

Selected transformation

Method: Molodensky-Badekas (CF geog2D domain)

Remarks: For accuracies commensurate with mapping at 1/5000 scale. May be taken as approximate transformation Korean 1985 to WGS 84 - see code 5191.

Information source: National Geographic Information Institute (NGII) notice 2003-497.

Revision date: 2023-11-22

Attributes

Unit: metre

Geodetic CRS: Korean 1985

Datum: Korean Datum 1985

Ellipsoid: Bessel 1841

Prime meridian: Greenwich

Data source: EPSG

Information source: National Geographic Information Institute (NGII).

Revision date: 2023-07-17

Scope: Topographic mapping (small scale).

Remarks: Introduced in 2004. From 2010 replaced by KGD2002 / Unified CS (CRS code 5179).

Area of use: Republic of Korea (South Korea) - onshore.

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

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Center coordinates
1024566.55 1765644.13

Projected bounds:
723134.45 1460667.18
1327650.73 2076538.18

WGS84 bounds:
124.53 33.14
131.01 38.64

Republic of Korea (South Korea) - onshore.
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Definition: OGC Well Known Text

PROJCS["Korean 1985 / Unified CS",
    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",127.5],
    PARAMETER["scale_factor",0.9996],
    PARAMETER["false_easting",1000000],
    PARAMETER["false_northing",2000000],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","5178"]]

Definition: OGC Well Known Text 2 (2019)

BOUNDCRS[
    SOURCECRS[
        PROJCRS["Korean 1985 / Unified CS",
            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 Unified 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",127.5,
                    ANGLEUNIT["degree",0.0174532925199433],
                    ID["EPSG",8802]],
                PARAMETER["Scale factor at natural origin",0.9996,
                    SCALEUNIT["unity",1],
                    ID["EPSG",8805]],
                PARAMETER["False easting",1000000,
                    LENGTHUNIT["metre",1],
                    ID["EPSG",8806]],
                PARAMETER["False northing",2000000,
                    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["Topographic mapping (small scale)."],
                AREA["Republic of Korea (South Korea) - onshore."],
                BBOX[33.14,124.53,38.64,131.01]],
            ID["EPSG",5178]]],
    TARGETCRS[
        GEOGCRS["WGS 84",
            ENSEMBLE["World Geodetic System 1984 ensemble",
                MEMBER["World Geodetic System 1984 (Transit)"],
                MEMBER["World Geodetic System 1984 (G730)"],
                MEMBER["World Geodetic System 1984 (G873)"],
                MEMBER["World Geodetic System 1984 (G1150)"],
                MEMBER["World Geodetic System 1984 (G1674)"],
                MEMBER["World Geodetic System 1984 (G1762)"],
                MEMBER["World Geodetic System 1984 (G2139)"],
                ELLIPSOID["WGS 84",6378137,298.257223563,
                    LENGTHUNIT["metre",1]],
                ENSEMBLEACCURACY[2.0]],
            PRIMEM["Greenwich",0,
                ANGLEUNIT["degree",0.0174532925199433]],
            CS[ellipsoidal,2],
                AXIS["geodetic latitude (Lat)",north,
                    ORDER[1],
                    ANGLEUNIT["degree",0.0174532925199433]],
                AXIS["geodetic longitude (Lon)",east,
                    ORDER[2],
                    ANGLEUNIT["degree",0.0174532925199433]],
            USAGE[
                SCOPE["Horizontal component of 3D system."],
                AREA["World."],
                BBOX[-90,-180,90,180]],
            ID["EPSG",4326]]],
    ABRIDGEDTRANSFORMATION["Transformation from unknown to WGS84",
        METHOD["Position Vector transformation (geog2D domain)",
            ID["EPSG",9606]],
        PARAMETER["X-axis translation",-145.907,
            ID["EPSG",8605]],
        PARAMETER["Y-axis translation",505.034,
            ID["EPSG",8606]],
        PARAMETER["Z-axis translation",685.756,
            ID["EPSG",8607]],
        PARAMETER["X-axis rotation",-1.162,
            ID["EPSG",8608]],
        PARAMETER["Y-axis rotation",2.347,
            ID["EPSG",8609]],
        PARAMETER["Z-axis rotation",1.592,
            ID["EPSG",8610]],
        PARAMETER["Scale difference",1.000006342,
            ID["EPSG",8611]]]]

Definition: ESRI Well Known Text

PROJCS["Korean_1985_Korea_Unified_Coordinate_System",
    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",1000000.0],
    PARAMETER["False_Northing",2000000.0],
    PARAMETER["Central_Meridian",127.5],
    PARAMETER["Scale_Factor",0.9996],
    PARAMETER["Latitude_Of_Origin",38.0],
    UNIT["Meter",1.0]]

Definition: PROJ.4

+proj=tmerc +lat_0=38 +lon_0=127.5 +k=0.9996 +x_0=1000000 +y_0=2000000 +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:5178","+proj=tmerc +lat_0=38 +lon_0=127.5 +k=0.9996 +x_0=1000000 +y_0=2000000 +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

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "BoundCRS",
    "source_crs": {
        "type": "ProjectedCRS",
        "name": "Korean 1985 / Unified CS",
        "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 Unified 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": 127.5,
                    "unit": "degree",
                    "id": {
                        "authority": "EPSG",
                        "code": 8802
                    }
                },
                {
                    "name": "Scale factor at natural origin",
                    "value": 0.9996,
                    "unit": "unity",
                    "id": {
                        "authority": "EPSG",
                        "code": 8805
                    }
                },
                {
                    "name": "False easting",
                    "value": 1000000,
                    "unit": "metre",
                    "id": {
                        "authority": "EPSG",
                        "code": 8806
                    }
                },
                {
                    "name": "False northing",
                    "value": 2000000,
                    "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"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 5178
        }
    },
    "target_crs": {
        "type": "GeographicCRS",
        "name": "WGS 84",
        "datum_ensemble": {
            "name": "World Geodetic System 1984 ensemble",
            "members": [
                {
                    "name": "World Geodetic System 1984 (Transit)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1166
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G730)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1152
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G873)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1153
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G1150)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1154
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G1674)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1155
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G1762)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1156
                    }
                },
                {
                    "name": "World Geodetic System 1984 (G2139)",
                    "id": {
                        "authority": "EPSG",
                        "code": 1309
                    }
                }
            ],
            "ellipsoid": {
                "name": "WGS 84",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257223563
            },
            "accuracy": "2.0",
            "id": {
                "authority": "EPSG",
                "code": 6326
            }
        },
        "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": 4326
        }
    },
    "transformation": {
        "name": "Transformation from unknown to WGS84",
        "method": {
            "name": "Position Vector transformation (geog2D domain)",
            "id": {
                "authority": "EPSG",
                "code": 9606
            }
        },
        "parameters": [
            {
                "name": "X-axis translation",
                "value": -145.907,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8605
                }
            },
            {
                "name": "Y-axis translation",
                "value": 505.034,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8606
                }
            },
            {
                "name": "Z-axis translation",
                "value": 685.756,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8607
                }
            },
            {
                "name": "X-axis rotation",
                "value": -1.162,
                "unit": {
                    "type": "AngularUnit",
                    "name": "arc-second",
                    "conversion_factor": 4.84813681109536e-06
                },
                "id": {
                    "authority": "EPSG",
                    "code": 8608
                }
            },
            {
                "name": "Y-axis rotation",
                "value": 2.347,
                "unit": {
                    "type": "AngularUnit",
                    "name": "arc-second",
                    "conversion_factor": 4.84813681109536e-06
                },
                "id": {
                    "authority": "EPSG",
                    "code": 8609
                }
            },
            {
                "name": "Z-axis rotation",
                "value": 1.592,
                "unit": {
                    "type": "AngularUnit",
                    "name": "arc-second",
                    "conversion_factor": 4.84813681109536e-06
                },
                "id": {
                    "authority": "EPSG",
                    "code": 8610
                }
            },
            {
                "name": "Scale difference",
                "value": 6.342,
                "unit": {
                    "type": "ScaleUnit",
                    "name": "parts per million",
                    "conversion_factor": 1e-06
                },
                "id": {
                    "authority": "EPSG",
                    "code": 8611
                }
            }
        ]
    }
}

Definition: GeoServer

5178=PROJCS["Korean 1985 / Unified CS",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",127.5],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",1000000],PARAMETER["false_northing",2000000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","5178"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=38"
	"lon_0=127.5"
	"k=0.9996"
	"x_0=1000000"
	"y_0=2000000"
	"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=127.5 +k=0.9996 +x_0=1000000 +y_0=2000000 +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=127.5 +k=0.9996 +x_0=1000000 +y_0=2000000 +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 ( 5178, 'EPSG', 5178, '+proj=tmerc +lat_0=38 +lon_0=127.5 +k=0.9996 +x_0=1000000 +y_0=2000000 +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 / Unified CS",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",127.5],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",1000000],PARAMETER["false_northing",2000000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","5178"]]');