EPSG:20251

AGD66 / AMG zone 51

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Available transformations
to EPSG:4326
EPSG:4326 - WGS 84

Selected transformation

Method: NTv2

Grid Files: A66 National (13.09.01).gsb

Remarks: Parameter values from AGD66 to GDA94 (11) (code 1803). Approximation assuming WGS 84 is equivalent to GDA94; ignores the low accuracy of the WGS 84 ensemble and the inconsistent application of tectonic plate motion to WGS 84 data.

Information source: OGP

Revision date: 2021-01-18

Attributes

Unit: metre

Geodetic CRS: AGD66

Datum: Australian Geodetic Datum 1966

Ellipsoid: Australian National Spheroid

Prime meridian: Greenwich

Data source: EPSG

Revision date: 1995-06-02

Scope: Engineering survey, topographic mapping.

Area of use: Australia - onshore and offshore between 120°E and 126°E.

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

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Center coordinates
1524047.49 6996119.07

Projected bounds:
-612860.31 4680014.64
3981990.83 8909784.29

WGS84 bounds:
112.85 -43.7
153.69 -9.86

Australia - Australian Capital Territory; New South Wales; Northern Territory; Queensland; South Australia; Tasmania; Western Australia; Victoria.
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Definition: OGC Well Known Text

PROJCS["AGD66 / AMG zone 51",
    GEOGCS["AGD66",
        DATUM["Australian_Geodetic_Datum_1966",
            SPHEROID["Australian National Spheroid",6378160,298.25],
            EXTENSION["PROJ4_GRIDS","A66 National (13.09.01).gsb"]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4202"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",123],
    PARAMETER["scale_factor",0.9996],
    PARAMETER["false_easting",500000],
    PARAMETER["false_northing",10000000],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","20251"]]

Definition: OGC Well Known Text 2 (2019)

PROJCRS["AGD66 / AMG zone 51",
    BASEGEOGCRS["AGD66",
        DATUM["Australian Geodetic Datum 1966",
            ELLIPSOID["Australian National Spheroid",6378160,298.25,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",4202]],
    CONVERSION["Australian Map Grid zone 51",
        METHOD["Transverse Mercator",
            ID["EPSG",9807]],
        PARAMETER["Latitude of natural origin",0,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",123,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",0.9996,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        PARAMETER["False easting",500000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8806]],
        PARAMETER["False northing",10000000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8807]]],
    CS[Cartesian,2],
        AXIS["(E)",east,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["(N)",north,
            ORDER[2],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Engineering survey, topographic mapping."],
        AREA["Australia - onshore and offshore between 120°E and 126°E."],
        BBOX[-38.07,120,-10.46,126.01]],
    ID["EPSG",20251]]

Definition: ESRI Well Known Text

PROJCS["AGD_1966_AMG_Zone_51",
    GEOGCS["GCS_Australian_1966",
        DATUM["D_Australian_1966",
            SPHEROID["Australian",6378160.0,298.25],
            EXTENSION["PROJ4_GRIDS","A66 National (13.09.01).gsb"]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["False_Easting",500000.0],
    PARAMETER["False_Northing",10000000.0],
    PARAMETER["Central_Meridian",123.0],
    PARAMETER["Scale_Factor",0.9996],
    PARAMETER["Latitude_Of_Origin",0.0],
    UNIT["Meter",1.0]]

Definition: PROJ.4

+proj=utm +zone=51 +south +ellps=aust_SA +nadgrids="A66 National (13.09.01).gsb" +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:20251","+proj=utm +zone=51 +south +ellps=aust_SA +nadgrids="A66 National (13.09.01).gsb" +units=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "AGD66 / AMG zone 51",
    "base_crs": {
        "name": "AGD66",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Australian Geodetic Datum 1966",
            "ellipsoid": {
                "name": "Australian National Spheroid",
                "semi_major_axis": 6378160,
                "inverse_flattening": 298.25
            }
        },
        "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": 4202
        }
    },
    "conversion": {
        "name": "Australian Map Grid zone 51",
        "method": {
            "name": "Transverse Mercator",
            "id": {
                "authority": "EPSG",
                "code": 9807
            }
        },
        "parameters": [
            {
                "name": "Latitude of natural origin",
                "value": 0,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8801
                }
            },
            {
                "name": "Longitude of natural origin",
                "value": 123,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8802
                }
            },
            {
                "name": "Scale factor at natural origin",
                "value": 0.9996,
                "unit": "unity",
                "id": {
                    "authority": "EPSG",
                    "code": 8805
                }
            },
            {
                "name": "False easting",
                "value": 500000,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8806
                }
            },
            {
                "name": "False northing",
                "value": 10000000,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8807
                }
            }
        ]
    },
    "coordinate_system": {
        "subtype": "Cartesian",
        "axis": [
            {
                "name": "Easting",
                "abbreviation": "E",
                "direction": "east",
                "unit": "metre"
            },
            {
                "name": "Northing",
                "abbreviation": "N",
                "direction": "north",
                "unit": "metre"
            }
        ]
    },
    "scope": "Engineering survey, topographic mapping.",
    "area": "Australia - onshore and offshore between 120°E and 126°E.",
    "bbox": {
        "south_latitude": -38.07,
        "west_longitude": 120,
        "north_latitude": -10.46,
        "east_longitude": 126.01
    },
    "id": {
        "authority": "EPSG",
        "code": 20251
    }
}

Definition: GeoServer

20251=PROJCS["AGD66 / AMG zone 51",GEOGCS["AGD66",DATUM["Australian_Geodetic_Datum_1966",SPHEROID["Australian National Spheroid",6378160,298.25],EXTENSION["PROJ4_GRIDS","A66 National (13.09.01).gsb"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4202"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",123],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",10000000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","20251"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=utm"
	"zone=51"
	"south"
	"ellps=aust_SA"
	"nadgrids="A66"
	"National"
	"(13.09.01).gsb""
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=utm +zone=51 +south +ellps=aust_SA +nadgrids="A66 National (13.09.01).gsb" +units=m +no_defs +type=crs">
	<Layer srs="+proj=utm +zone=51 +south +ellps=aust_SA +nadgrids="A66 National (13.09.01).gsb" +units=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 20251, 'EPSG', 20251, '+proj=utm +zone=51 +south +ellps=aust_SA +nadgrids="A66 National (13.09.01).gsb" +units=m +no_defs +type=crs', 'PROJCS["AGD66 / AMG zone 51",GEOGCS["AGD66",DATUM["Australian_Geodetic_Datum_1966",SPHEROID["Australian National Spheroid",6378160,298.25],EXTENSION["PROJ4_GRIDS","A66 National (13.09.01).gsb"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4202"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",123],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",10000000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","20251"]]');