EPSG:6128

Grand Cayman National Grid 1959

Transform Get position on a map

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

Selected transformation

Method: Coordinate Frame rotation (geog2D domain)

Remarks: Parameter values are taken from GCGD59 to CIGD11 (1) (code 6136) assuming that CIGD11 and WGS 84 can be considered the same to within the accuracy of the transformation.

Information source: OGP

Revision date: 2021-09-23

Attributes

Unit: foot

Geodetic CRS: GCGD59

Datum: Grand Cayman Geodetic Datum 1959

Ellipsoid: Clarke 1866

Prime meridian: Greenwich

Data source: EPSG

Information source: Lands and Surveys Department, Cayman Islands Government.

Revision date: 2012-12-12

Scope: Cadastre, engineering survey, topographic mapping.

Area of use: Cayman Islands - Grand Cayman.

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

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Center coordinates
1555757.96 7005934.24

Projected bounds:
1483279.35 6969568.07
1628147.92 7042389.43

WGS84 bounds:
-81.46 19.21
-81.04 19.41

Cayman Islands - Grand Cayman.
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Definition: OGC Well Known Text

PROJCS["Grand Cayman National Grid 1959",
    GEOGCS["GCGD59",
        DATUM["Grand_Cayman_Geodetic_Datum_1959",
            SPHEROID["Clarke 1866",6378206.4,294.978698213898],
            TOWGS84[-179.483,-69.379,-27.584,7.862,-8.163,-6.042,-13.925]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4723"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",-81],
    PARAMETER["scale_factor",0.9996],
    PARAMETER["false_easting",1640419.9475],
    PARAMETER["false_northing",0],
    UNIT["foot",0.3048],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","6128"]]

Definition: OGC Well Known Text 2 (2019)

PROJCRS["Grand Cayman National Grid 1959",
    BASEGEOGCRS["GCGD59",
        DATUM["Grand Cayman Geodetic Datum 1959",
            ELLIPSOID["Clarke 1866",6378206.4,294.978698213898,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",4723]],
    CONVERSION["Cayman Islands TM (ft)",
        METHOD["Transverse Mercator",
            ID["EPSG",9807]],
        PARAMETER["Latitude of natural origin",0,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",-81,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",0.9996,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        PARAMETER["False easting",1640419.9475,
            LENGTHUNIT["foot",0.3048],
            ID["EPSG",8806]],
        PARAMETER["False northing",0,
            LENGTHUNIT["foot",0.3048],
            ID["EPSG",8807]]],
    CS[Cartesian,2],
        AXIS["(E)",east,
            ORDER[1],
            LENGTHUNIT["foot",0.3048]],
        AXIS["(N)",north,
            ORDER[2],
            LENGTHUNIT["foot",0.3048]],
    USAGE[
        SCOPE["Cadastre, engineering survey, topographic mapping."],
        AREA["Cayman Islands - Grand Cayman."],
        BBOX[19.21,-81.46,19.41,-81.04]],
    ID["EPSG",6128]]

Definition: ESRI Well Known Text

PROJCS["Grand_Cayman_National_Grid_1959",
    GEOGCS["GCS_Grand_Cayman_1959",
        DATUM["D_Grand_Cayman_1959",
            SPHEROID["Clarke_1866",6378206.4,294.978698213898]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["False_Easting",1640419.9475],
    PARAMETER["False_Northing",0.0],
    PARAMETER["Central_Meridian",-81.0],
    PARAMETER["Scale_Factor",0.9996],
    PARAMETER["Latitude_Of_Origin",0.0],
    UNIT["foot",0.3048]]

Definition: PROJ.4

+proj=tmerc +lat_0=0 +lon_0=-81 +k=0.9996 +x_0=499999.999998 +y_0=0 +ellps=clrk66 +towgs84=-179.483,-69.379,-27.584,7.862,-8.163,-6.042,-13.925 +units=ft +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:6128","+proj=tmerc +lat_0=0 +lon_0=-81 +k=0.9996 +x_0=499999.999998 +y_0=0 +ellps=clrk66 +towgs84=-179.483,-69.379,-27.584,7.862,-8.163,-6.042,-13.925 +units=ft +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "Grand Cayman National Grid 1959",
    "base_crs": {
        "name": "GCGD59",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Grand Cayman Geodetic Datum 1959",
            "ellipsoid": {
                "name": "Clarke 1866",
                "semi_major_axis": 6378206.4,
                "inverse_flattening": 294.978698213898
            }
        },
        "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": 4723
        }
    },
    "conversion": {
        "name": "Cayman Islands TM (ft)",
        "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": -81,
                "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": 1640419.9475,
                "unit": {
                    "type": "LinearUnit",
                    "name": "foot",
                    "conversion_factor": 0.3048
                },
                "id": {
                    "authority": "EPSG",
                    "code": 8806
                }
            },
            {
                "name": "False northing",
                "value": 0,
                "unit": {
                    "type": "LinearUnit",
                    "name": "foot",
                    "conversion_factor": 0.3048
                },
                "id": {
                    "authority": "EPSG",
                    "code": 8807
                }
            }
        ]
    },
    "coordinate_system": {
        "subtype": "Cartesian",
        "axis": [
            {
                "name": "Easting",
                "abbreviation": "E",
                "direction": "east",
                "unit": {
                    "type": "LinearUnit",
                    "name": "foot",
                    "conversion_factor": 0.3048
                }
            },
            {
                "name": "Northing",
                "abbreviation": "N",
                "direction": "north",
                "unit": {
                    "type": "LinearUnit",
                    "name": "foot",
                    "conversion_factor": 0.3048
                }
            }
        ]
    },
    "scope": "Cadastre, engineering survey, topographic mapping.",
    "area": "Cayman Islands - Grand Cayman.",
    "bbox": {
        "south_latitude": 19.21,
        "west_longitude": -81.46,
        "north_latitude": 19.41,
        "east_longitude": -81.04
    },
    "id": {
        "authority": "EPSG",
        "code": 6128
    }
}

Definition: GeoServer

6128=PROJCS["Grand Cayman National Grid 1959",GEOGCS["GCGD59",DATUM["Grand_Cayman_Geodetic_Datum_1959",SPHEROID["Clarke 1866",6378206.4,294.978698213898],TOWGS84[-179.483,-69.379,-27.584,7.862,-8.163,-6.042,-13.925]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4723"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-81],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",1640419.9475],PARAMETER["false_northing",0],UNIT["foot",0.3048],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","6128"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=0"
	"lon_0=-81"
	"k=0.9996"
	"x_0=499999.999998"
	"y_0=0"
	"ellps=clrk66"
	"towgs84=-179.483,-69.379,-27.584,7.862,-8.163,-6.042,-13.925"
	"units=ft"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=tmerc +lat_0=0 +lon_0=-81 +k=0.9996 +x_0=499999.999998 +y_0=0 +ellps=clrk66 +towgs84=-179.483,-69.379,-27.584,7.862,-8.163,-6.042,-13.925 +units=ft +no_defs +type=crs">
	<Layer srs="+proj=tmerc +lat_0=0 +lon_0=-81 +k=0.9996 +x_0=499999.999998 +y_0=0 +ellps=clrk66 +towgs84=-179.483,-69.379,-27.584,7.862,-8.163,-6.042,-13.925 +units=ft +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 6128, 'EPSG', 6128, '+proj=tmerc +lat_0=0 +lon_0=-81 +k=0.9996 +x_0=499999.999998 +y_0=0 +ellps=clrk66 +towgs84=-179.483,-69.379,-27.584,7.862,-8.163,-6.042,-13.925 +units=ft +no_defs +type=crs', 'PROJCS["Grand Cayman National Grid 1959",GEOGCS["GCGD59",DATUM["Grand_Cayman_Geodetic_Datum_1959",SPHEROID["Clarke 1866",6378206.4,294.978698213898],TOWGS84[-179.483,-69.379,-27.584,7.862,-8.163,-6.042,-13.925]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4723"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-81],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",1640419.9475],PARAMETER["false_northing",0],UNIT["foot",0.3048],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","6128"]]');