EPSG:1209

Hong Kong Geodetic

Attributes

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: EPSG

Information source: Survey and Mapping Office, Lands Department.

Revision date: 2022-01-21

Scope: Geodesy.

Remarks: Locally sometimes referred to as ITRF96 or WGS 84, these are not strictly correct as it applies only at epoch 1998.121 and ignores subsequent tectonic plate motion.

Area of use: China - Hong Kong - onshore and offshore.

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WGS84 bounds:
114.51 22.13
113.76 22.58

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Definition: OGC Well Known Text

DATUM["Hong_Kong_Geodetic",
    SPHEROID["GRS 1980",6378137,298.257222101,
        AUTHORITY["EPSG","7019"]],
    AUTHORITY["EPSG","1209"]]

Definition: OGC Well Known Text 2 (2019)

DATUM["Hong Kong Geodetic",
    ELLIPSOID["GRS 1980",6378137,298.257222101,
        LENGTHUNIT["metre",1]],
    ID["EPSG",1209]]

Definition: ESRI Well Known Text

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

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeodeticReferenceFrame",
    "name": "Hong Kong Geodetic",
    "ellipsoid": {
        "name": "GRS 1980",
        "semi_major_axis": 6378137,
        "inverse_flattening": 298.257222101
    },
    "scope": "Geodesy.",
    "area": "China - Hong Kong - onshore and offshore.",
    "bbox": {
        "south_latitude": 22.13,
        "west_longitude": 113.76,
        "north_latitude": 22.58,
        "east_longitude": 114.51
    },
    "id": {
        "authority": "EPSG",
        "code": 1209
    }
}

Definition: GeoServer

1209-datum=DATUM["Hong_Kong_Geodetic",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],AUTHORITY["EPSG","1209"]]