EPSG:8433

Macao 1920 / Macao Grid

Transform Get position on a map

Available transformations
to EPSG:4326
No other targets exist for this CRS

  • China - Macao - onshore and offshore. , accuracy 1.0 m, code 8438 (default) [7]

Selected transformation

Method: Molodensky-Badekas (CF geog2D domain)

Remarks: Derived from Macao 2008 to Macao 1920 (1) (code 8435) (reversed) assuming that Macao 2008 is equivalent to WGS 84 within the accuracy of the transformation. Some parameter values differ in the reverse due to the high rotations.

Information source: IOGP

Revision date: 2021-09-23

Attributes

Unit: metre

Geodetic CRS: Macao 1920

Datum: Macao 1920

Ellipsoid: International 1924

Prime meridian: Greenwich

Data source: EPSG

Information source: Directorate of Cartographic and Cadastral Services (DSCC).

Revision date: 2018-02-08

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

Area of use: China - Macao - onshore and offshore.

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

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SimpleMap

Center coordinates
26276.49 12695.14

Projected bounds:
18018.84 3282.95
34533.83 22109.73

WGS84 bounds:
113.52 22.06
113.68 22.23

China - Macao - onshore and offshore.
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Definition: OGC Well Known Text

PROJCS["Macao 1920 / Macao Grid",
    GEOGCS["Macao 1920",
        DATUM["Macao_1920",
            SPHEROID["International 1924",6378388,297],
            TOWGS84[-202.865,-303.99,-155.873,-34.079,76.126,32.66,6.096]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","8428"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",22.2123972222222],
    PARAMETER["central_meridian",113.536469444444],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",20000],
    PARAMETER["false_northing",20000],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","8433"]]

Definition: OGC Well Known Text 2 (2019)

PROJCRS["Macao 1920 / Macao Grid",
    BASEGEOGCRS["Macao 1920",
        DATUM["Macao 1920",
            ELLIPSOID["International 1924",6378388,297,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",8428]],
    CONVERSION["Macau Grid",
        METHOD["Transverse Mercator",
            ID["EPSG",9807]],
        PARAMETER["Latitude of natural origin",22.2123972222222,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",113.536469444444,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",1,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        PARAMETER["False easting",20000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8806]],
        PARAMETER["False northing",20000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8807]]],
    CS[Cartesian,2],
        AXIS["northing (N)",north,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["easting (E)",east,
            ORDER[2],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Cadastre, engineering survey, topographic mapping (large scale)."],
        AREA["China - Macao - onshore and offshore."],
        BBOX[22.06,113.52,22.23,113.68]],
    ID["EPSG",8433]]

Definition: ESRI Well Known Text

PROJCS["Macao_1920_Macao_Grid",
    GEOGCS["Macao_1920",
        DATUM["Macao_1920",
            SPHEROID["International_1924",6378388.0,297.0]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["False_Easting",20000.0],
    PARAMETER["False_Northing",20000.0],
    PARAMETER["Central_Meridian",113.536469444444],
    PARAMETER["Scale_Factor",1.0],
    PARAMETER["Latitude_Of_Origin",22.2123972222222],
    UNIT["Meter",1.0]]

Definition: PROJ.4

+proj=tmerc +lat_0=22.2123972222222 +lon_0=113.536469444444 +k=1 +x_0=20000 +y_0=20000 +ellps=intl +towgs84=-202.865,-303.99,-155.873,-34.079,76.126,32.66,6.096 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:8433","+proj=tmerc +lat_0=22.2123972222222 +lon_0=113.536469444444 +k=1 +x_0=20000 +y_0=20000 +ellps=intl +towgs84=-202.865,-303.99,-155.873,-34.079,76.126,32.66,6.096 +units=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "Macao 1920 / Macao Grid",
    "base_crs": {
        "name": "Macao 1920",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Macao 1920",
            "ellipsoid": {
                "name": "International 1924",
                "semi_major_axis": 6378388,
                "inverse_flattening": 297
            }
        },
        "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": 8428
        }
    },
    "conversion": {
        "name": "Macau Grid",
        "method": {
            "name": "Transverse Mercator",
            "id": {
                "authority": "EPSG",
                "code": 9807
            }
        },
        "parameters": [
            {
                "name": "Latitude of natural origin",
                "value": 22.2123972222222,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8801
                }
            },
            {
                "name": "Longitude of natural origin",
                "value": 113.536469444444,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8802
                }
            },
            {
                "name": "Scale factor at natural origin",
                "value": 1,
                "unit": "unity",
                "id": {
                    "authority": "EPSG",
                    "code": 8805
                }
            },
            {
                "name": "False easting",
                "value": 20000,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8806
                }
            },
            {
                "name": "False northing",
                "value": 20000,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8807
                }
            }
        ]
    },
    "coordinate_system": {
        "subtype": "Cartesian",
        "axis": [
            {
                "name": "Northing",
                "abbreviation": "N",
                "direction": "north",
                "unit": "metre"
            },
            {
                "name": "Easting",
                "abbreviation": "E",
                "direction": "east",
                "unit": "metre"
            }
        ]
    },
    "scope": "Cadastre, engineering survey, topographic mapping (large scale).",
    "area": "China - Macao - onshore and offshore.",
    "bbox": {
        "south_latitude": 22.06,
        "west_longitude": 113.52,
        "north_latitude": 22.23,
        "east_longitude": 113.68
    },
    "id": {
        "authority": "EPSG",
        "code": 8433
    }
}

Definition: GeoServer

8433=PROJCS["Macao 1920 / Macao Grid",GEOGCS["Macao 1920",DATUM["Macao_1920",SPHEROID["International 1924",6378388,297],TOWGS84[-202.865,-303.99,-155.873,-34.079,76.126,32.66,6.096]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","8428"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",22.2123972222222],PARAMETER["central_meridian",113.536469444444],PARAMETER["scale_factor",1],PARAMETER["false_easting",20000],PARAMETER["false_northing",20000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","8433"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=22.2123972222222"
	"lon_0=113.536469444444"
	"k=1"
	"x_0=20000"
	"y_0=20000"
	"ellps=intl"
	"towgs84=-202.865,-303.99,-155.873,-34.079,76.126,32.66,6.096"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=tmerc +lat_0=22.2123972222222 +lon_0=113.536469444444 +k=1 +x_0=20000 +y_0=20000 +ellps=intl +towgs84=-202.865,-303.99,-155.873,-34.079,76.126,32.66,6.096 +units=m +no_defs +type=crs">
	<Layer srs="+proj=tmerc +lat_0=22.2123972222222 +lon_0=113.536469444444 +k=1 +x_0=20000 +y_0=20000 +ellps=intl +towgs84=-202.865,-303.99,-155.873,-34.079,76.126,32.66,6.096 +units=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 8433, 'EPSG', 8433, '+proj=tmerc +lat_0=22.2123972222222 +lon_0=113.536469444444 +k=1 +x_0=20000 +y_0=20000 +ellps=intl +towgs84=-202.865,-303.99,-155.873,-34.079,76.126,32.66,6.096 +units=m +no_defs +type=crs', 'PROJCS["Macao 1920 / Macao Grid",GEOGCS["Macao 1920",DATUM["Macao_1920",SPHEROID["International 1924",6378388,297],TOWGS84[-202.865,-303.99,-155.873,-34.079,76.126,32.66,6.096]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","8428"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",22.2123972222222],PARAMETER["central_meridian",113.536469444444],PARAMETER["scale_factor",1],PARAMETER["false_easting",20000],PARAMETER["false_northing",20000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","8433"]]');