EPSG:4301

Tokyo

Available transformations
to EPSG:6668
EPSG:6668 - JGD2011

Selected transformation

Method: NTv2

Grid Files: tky2jgd.gsb

Remarks: Parameter values from Tokyo to JGD2000 (2) (tfm code 6712) as in area of applicability JGD2011 = JGD2000. NTv2 grid derived by ESRI from that supplied by GSI in application tky2jgd. See Tokyo to JGD2011 (1) (tfm code 6714) for northern Honshu area.

Information source: OGP

Revision date: 2023-01-17

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: Tokyo

Datum: Tokyo

Ellipsoid: Bessel 1841

Prime meridian: Greenwich

Data source: EPSG

Information source: Geographic Survey Institute; Japan; Bulletin 40 (March 1994). Also http://vldb.gsi.go.jp/sokuchi/datum/tokyodatum.html

Revision date: 2010-06-30

Scope: Geodesy.

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).

Area of use: Japan - onshore; North Korea - onshore; South Korea - onshore.

Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree

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Japan - onshore, excluding northern prefectures of 'main province' (see remarks).
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Definition: OGC Well Known Text 2 (2019)

BOUNDCRS[
    SOURCECRS[
        GEOGCRS["Tokyo",
            DATUM["Tokyo",
                ELLIPSOID["Bessel 1841",6377397.155,299.1528128,
                    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["Geodesy."],
                AREA["Japan - onshore; North Korea - onshore; South Korea - onshore."],
                BBOX[20.37,122.83,45.54,154.05]],
            ID["EPSG",4301]]],
    TARGETCRS[
        GEOGCRS["JGD2011",
            DATUM["Japanese Geodetic Datum 2011",
                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]]],
    ABRIDGEDTRANSFORMATION["Tokyo to JGD2011 (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) (tfm code 6712) as in area of applicability JGD2011 = JGD2000. NTv2 grid derived by ESRI from that supplied by GSI in application tky2jgd. See Tokyo to JGD2011 (1) (tfm code 6714) for northern Honshu area."]]]

Definition: PROJ.4

+proj=longlat +ellps=bessel +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4301","+proj=longlat +ellps=bessel +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "BoundCRS",
    "source_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
        }
    },
    "target_crs": {
        "type": "GeographicCRS",
        "name": "JGD2011",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Japanese Geodetic Datum 2011",
            "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
        }
    },
    "transformation": {
        "name": "Tokyo to JGD2011 (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=longlat"
	"ellps=bessel"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +ellps=bessel +no_defs +type=crs">
	<Layer srs="+proj=longlat +ellps=bessel +no_defs +type=crs">
	</Layer>
</Map>