Japanese Geodetic Datum 2024

Attributes

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: EPSG

Information source: Geodetic Department, Geospatial Information Authority of Japan (GSI).

Revision date: 2026-04-21

Scope: Geodesy, engineering survey, topographic mapping.

Remarks: Instigated under amendment to the Japanese Surveying Law with effect from 21st October 2011. Replaces JGD2000 (datum code 6612). On adoption of JGD2024 (vertical) with effect from 1st April 2025, name of geodetic datum changed from JGD2011 to JGD2024.

Area of use: Japan - onshore and offshore.

Covered area powered by MapTiler

WGS84 bounds:
157.65 17.09
122.38 46.05

Definition: OGC Well Known Text

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DATUM["Japanese_Geodetic_Datum_2024",
    SPHEROID["GRS 1980",6378137,298.257222101,
        AUTHORITY["EPSG","7019"]],
    AUTHORITY["EPSG","1128"]]

Definition: OGC Well Known Text 2 (2019)

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DATUM["Japanese Geodetic Datum 2024",
    ELLIPSOID["GRS 1980",6378137,298.257222101,
        LENGTHUNIT["metre",1]],
    ID["EPSG",1128]]

Definition: ESRI Well Known Text

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DATUM["D_JGD_2011",
    SPHEROID["GRS_1980",6378137.0,298.257222101]]

Definition: JSON

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{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeodeticReferenceFrame",
    "name": "Japanese Geodetic Datum 2024",
    "ellipsoid": {
        "name": "GRS 1980",
        "semi_major_axis": 6378137,
        "inverse_flattening": 298.257222101
    },
    "scope": "Geodesy, engineering survey, topographic mapping.",
    "area": "Japan - onshore and offshore.",
    "bbox": {
        "south_latitude": 17.09,
        "west_longitude": 122.38,
        "north_latitude": 46.05,
        "east_longitude": 157.65
    },
    "id": {
        "authority": "EPSG",
        "code": 1128
    }
}

Definition: GeoServer

1128-datum=DATUM["Japanese_Geodetic_Datum_2024",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1128"]]

EPSG:1128