Tokyo / Japan Plane Rectangular CS XI

Japan - northern Honshu prefectures affected by 2011 Tohoku earthquake , accuracy 0.3 m, code 6714 (default) [grid]
Japan , accuracy 0.2 m, code 6740 [grid]

Selected transformation

Name: Tokyo to JGD2024 (2)

Method: NTv2

Grid Files: tky2jgd.gsb

Remarks: Parameter values from Tokyo to JGD2000 (2) (CT code 6712) as in area of applicability JGD2024 = JGD2000. NTv2 grid derived by ESRI from that supplied by GSI in application tky2jgd. See Tokyo to JGD2024 (1) (tfm code 6714) for northern Honshu area. On adoption of JGD2024 (vertical) with effect from 1st April 2025, the name of the target CRS was changed from JGD2011 to JGD2024; there is no change of definition or of coordinate values.

Information source: OGP

Revision date: 2026-06-17

Attributes

Unit: metre

Geodetic CRS: Tokyo

Datum: Tokyo

Ellipsoid: Bessel 1841

Prime meridian: Greenwich

Data source: EPSG

Information source: Geographic Survey Institute; Japan. http://vldb.gsi.go.jp/sokuchi/datum/tokyodatum.html

Revision date: 2002-06-22

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

Remarks: Replaced by JGD2000 / Japan Plane Rectangular CS XI (code 2453) from April 2002.

Area of use: Japan - onshore - Hokkaido west of approximately 141°E - Otaru city; Hakodate city; Date city; Usu-gun and Abuta-gun of Iburi-shicho; Hiyama-shicho; Shiribeshi-shicho; Oshima-shicho.

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

Covered area powered by MapTiler

Japan - onshore, excluding northern prefectures of 'main province' (see remarks).

Definition: OGC Well Known Text 2 (2019)

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BOUNDCRS[
    SOURCECRS[
        PROJCRS["Tokyo / Japan Plane Rectangular CS XI",
            BASEGEOGCRS["Tokyo",
                DATUM["Tokyo",
                    ELLIPSOID["Bessel 1841",6377397.155,299.1528128,
                        LENGTHUNIT["metre",1]]],
                PRIMEM["Greenwich",0,
                    ANGLEUNIT["degree",0.0174532925199433]],
                ID["EPSG",4301]],
            CONVERSION["Japan Plane Rectangular CS zone XI",
                METHOD["Transverse Mercator",
                    ID["EPSG",9807]],
                PARAMETER["Latitude of natural origin",44,
                    ANGLEUNIT["degree",0.0174532925199433],
                    ID["EPSG",8801]],
                PARAMETER["Longitude of natural origin",140.25,
                    ANGLEUNIT["degree",0.0174532925199433],
                    ID["EPSG",8802]],
                PARAMETER["Scale factor at natural origin",0.9999,
                    SCALEUNIT["unity",1],
                    ID["EPSG",8805]],
                PARAMETER["False easting",0,
                    LENGTHUNIT["metre",1],
                    ID["EPSG",8806]],
                PARAMETER["False northing",0,
                    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["Japan - onshore - Hokkaido west of approximately 141°E - Otaru city; Hakodate city; Date city; Usu-gun and Abuta-gun of Iburi-shicho; Hiyama-shicho; Shiribeshi-shicho; Oshima-shicho."],
                BBOX[41.34,139.34,43.42,141.46]],
            ID["EPSG",30171]]],
    TARGETCRS[
        GEOGCRS["JGD2024",
            DATUM["Japanese Geodetic Datum 2024",
                ELLIPSOID["GRS 1980",6378137,298.257222101,
                    LENGTHUNIT["metre",1]]],
            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["Japan - onshore and offshore."],
                BBOX[17.09,122.38,46.05,157.65]],
            ID["EPSG",6668],
            REMARK["Replaces JGD2000 (CRS code 4612) with effect from 21st October 2011. On adoption of JGD2024 (vertical) with effect from 1st April 2025, the name of this geodetic CRS was changed from JGD2011 to JGD2024; there is no change of definition or of coordinate values."]]],
    ABRIDGEDTRANSFORMATION["Tokyo to JGD2024 (2)",
        METHOD["NTv2",
            ID["EPSG",9615]],
        PARAMETERFILE["Latitude and longitude difference file","tky2jgd.gsb"],
        USAGE[
            SCOPE["Engineering survey, topographic mapping."],
            AREA["Japan - onshore, excluding northern prefectures of 'main province' (see remarks)."],
            BBOX[20.37,122.83,45.54,154.05]],
        ID["EPSG",6740],
        REMARK["Parameter values from Tokyo to JGD2000 (2) (CT code 6712) as in area of applicability JGD2024 = JGD2000. NTv2 grid derived by ESRI from that supplied by GSI in application tky2jgd. See Tokyo to JGD2024 (1) (tfm code 6714) for northern Honshu area. On adoption of JGD2024 (vertical) with effect from 1st April 2025, the name of the target CRS was changed from JGD2011 to JGD2024; there is no change of definition or of coordinate values."]]]

Definition: PROJ.4

+proj=tmerc +lat_0=44 +lon_0=140.25 +k=0.9999 +x_0=0 +y_0=0 +ellps=bessel +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:30171","+proj=tmerc +lat_0=44 +lon_0=140.25 +k=0.9999 +x_0=0 +y_0=0 +ellps=bessel +units=m +no_defs +type=crs");

Definition: JSON

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{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "BoundCRS",
    "source_crs": {
        "type": "ProjectedCRS",
        "name": "Tokyo / Japan Plane Rectangular CS XI",
        "base_crs": {
            "type": "GeographicCRS",
            "name": "Tokyo",
            "datum": {
                "type": "GeodeticReferenceFrame",
                "name": "Tokyo",
                "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": 4301
            },
            "remarks": "In Japan, replaces Tokyo 1892 (CRS code 5132) and replaced by JGD2000 (code 4612) from April 2002. In Korea used only for geodetic applications before being replaced by Korean 1985 (code 4162)."
        },
        "conversion": {
            "name": "Japan Plane Rectangular CS zone XI",
            "method": {
                "name": "Transverse Mercator",
                "id": {
                    "authority": "EPSG",
                    "code": 9807
                }
            },
            "parameters": [
                {
                    "name": "Latitude of natural origin",
                    "value": 44,
                    "unit": "degree",
                    "id": {
                        "authority": "EPSG",
                        "code": 8801
                    }
                },
                {
                    "name": "Longitude of natural origin",
                    "value": 140.25,
                    "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": 0,
                    "unit": "metre",
                    "id": {
                        "authority": "EPSG",
                        "code": 8806
                    }
                },
                {
                    "name": "False northing",
                    "value": 0,
                    "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": 30171
        }
    },
    "target_crs": {
        "type": "GeographicCRS",
        "name": "JGD2024",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Japanese Geodetic Datum 2024",
            "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": 6668
        },
        "remarks": "Replaces JGD2000 (CRS code 4612) with effect from 21st October 2011. On adoption of JGD2024 (vertical) with effect from 1st April 2025, the name of this geodetic CRS was changed from JGD2011 to JGD2024; there is no change of definition or of coordinate values."
    },
    "transformation": {
        "name": "Tokyo to JGD2024 (2)",
        "method": {
            "name": "NTv2",
            "id": {
                "authority": "EPSG",
                "code": 9615
            }
        },
        "parameters": [
            {
                "name": "Latitude and longitude difference file",
                "value": "tky2jgd.gsb",
                "id": {
                    "authority": "EPSG",
                    "code": 8656
                }
            }
        ],
        "id": {
            "authority": "EPSG",
            "code": 6740
        }
    }
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=44"
	"lon_0=140.25"
	"k=0.9999"
	"x_0=0"
	"y_0=0"
	"ellps=bessel"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=tmerc +lat_0=44 +lon_0=140.25 +k=0.9999 +x_0=0 +y_0=0 +ellps=bessel +units=m +no_defs +type=crs">
	<Layer srs="+proj=tmerc +lat_0=44 +lon_0=140.25 +k=0.9999 +x_0=0 +y_0=0 +ellps=bessel +units=m +no_defs +type=crs">
	</Layer>
</Map>

EPSG:30171