Guam 1963 / Guam SPCS

Guam , accuracy 5.0 m, code 8665 (default) [grid]
Guam - onshore. , accuracy 5.0 m, code 1068 [grid]

Selected transformation

Grid Files: guhpgn.las guhpgn.los

Remarks: NADCON method which expects longitudes positive west; EPSG GeogCRSs Guam 1963 and NAD83(HARN) (codes 4675 and 4152) have longitudes positive east. Can be used as approximation for tfm between Guam 1963 and WGS 84 - see tfm code 1069.

Information source: ftp://ftp.ngs.noaa.gov/pub/pcsoft/nadcon/readme.txt

Revision date: 2010-03-30

Attributes

Unit: metre

Geodetic CRS: Guam 1963

Datum: Guam 1963

Ellipsoid: Clarke 1866

Prime meridian: Greenwich

Data source: EPSG

Information source: US National Geodetic Survey

Revision date: 2009-07-29

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

Remarks: Replaced by NAD83(HARN) / Guam Map Grid (CRS code 4414) from 1995.

Area of use: Guam - onshore.

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

Covered area powered by MapTiler

Center coordinates
54746.24 46250.32

Projected bounds:
31443.62 17485.32
78058.94 75029.52

WGS84 bounds:
144.58 13.18
145.01 13.7

Guam - onshore.

Definition: OGC Well Known Text 2 (2019)

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BOUNDCRS[
    SOURCECRS[
        PROJCRS["Guam 1963 / Guam SPCS",
            BASEGEOGCRS["Guam 1963",
                DATUM["Guam 1963",
                    ELLIPSOID["Clarke 1866",6378206.4,294.978698213898,
                        LENGTHUNIT["metre",1]]],
                PRIMEM["Greenwich",0,
                    ANGLEUNIT["degree",0.0174532925199433]],
                ID["EPSG",4675]],
            CONVERSION["Guam SPCS",
                METHOD["Guam Projection",
                    ID["EPSG",9831]],
                PARAMETER["Latitude of natural origin",13.4724663527778,
                    ANGLEUNIT["degree",0.0174532925199433],
                    ID["EPSG",8801]],
                PARAMETER["Longitude of natural origin",144.748750705556,
                    ANGLEUNIT["degree",0.0174532925199433],
                    ID["EPSG",8802]],
                PARAMETER["False easting",50000,
                    LENGTHUNIT["metre",1],
                    ID["EPSG",8806]],
                PARAMETER["False northing",50000,
                    LENGTHUNIT["metre",1],
                    ID["EPSG",8807]]],
            CS[Cartesian,2],
                AXIS["easting (X)",east,
                    ORDER[1],
                    LENGTHUNIT["metre",1]],
                AXIS["northing (Y)",north,
                    ORDER[2],
                    LENGTHUNIT["metre",1]],
            USAGE[
                SCOPE["Cadastre, engineering survey, topographic mapping (large and medium scale)."],
                AREA["Guam - onshore."],
                BBOX[13.18,144.58,13.7,145.01]],
            ID["EPSG",3993]]],
    TARGETCRS[
        GEOGCRS["NAD83(HARN)",
            DATUM["NAD83 (High Accuracy Reference Network)",
                ELLIPSOID["GRS 1980",6378137,298.257222101,
                    LENGTHUNIT["metre",1]]],
            PRIMEM["Greenwich",0,
                ANGLEUNIT["degree",0.0174532925199433]],
            CS[ellipsoidal,2],
                AXIS["geodetic latitude (Lat)",north,
                    ORDER[1],
                    ANGLEUNIT["degree",0.0174532925199433]],
                AXIS["geodetic longitude (Lon)",east,
                    ORDER[2],
                    ANGLEUNIT["degree",0.0174532925199433]],
            USAGE[
                SCOPE["Horizontal component of 3D system."],
                AREA["American Samoa - onshore - Tutuila, Aunu'u, Ofu, Olesega, Ta'u and Rose islands. Guam - onshore. Northern Mariana Islands - onshore. Puerto Rico - onshore. United States (USA) - onshore Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin and Wyoming; offshore Gulf of Mexico continental shelf (GoM OCS). US Virgin Islands - onshore."],
                BBOX[-14.59,144.58,71.4,-64.51]],
            ID["EPSG",4152]]],
    ABRIDGEDTRANSFORMATION["Guam 1963 to NAD83(HARN) (1)",
        METHOD["NADCON",
            ID["EPSG",9613]],
        PARAMETERFILE["Latitude difference file","guhpgn.las"],
        PARAMETERFILE["Longitude difference file","guhpgn.los"],
        USAGE[
            SCOPE["Geodesy."],
            AREA["Guam - onshore."],
            BBOX[13.18,144.58,13.7,145.01]],
        ID["EPSG",1068],
        REMARK["NADCON method which expects longitudes positive west; EPSG GeogCRSs Guam 1963 and NAD83(HARN) (codes 4675 and 4152) have longitudes positive east. Can be used as approximation for tfm between Guam 1963 and WGS 84 - see tfm code 1069."]]]

Definition: PROJ.4

+proj=aeqd +guam +lat_0=13.4724663527778 +lon_0=144.748750705556 +x_0=50000 +y_0=50000 +ellps=clrk66 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:3993","+proj=aeqd +guam +lat_0=13.4724663527778 +lon_0=144.748750705556 +x_0=50000 +y_0=50000 +ellps=clrk66 +units=m +no_defs +type=crs");

Definition: JSON

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{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "BoundCRS",
    "source_crs": {
        "type": "ProjectedCRS",
        "name": "Guam 1963 / Guam SPCS",
        "base_crs": {
            "name": "Guam 1963",
            "datum": {
                "type": "GeodeticReferenceFrame",
                "name": "Guam 1963",
                "ellipsoid": {
                    "name": "Clarke 1866",
                    "semi_major_axis": 6378206.4,
                    "semi_minor_axis": 6356583.8
                }
            },
            "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": 4675
            }
        },
        "conversion": {
            "name": "Guam SPCS",
            "method": {
                "name": "Guam Projection",
                "id": {
                    "authority": "EPSG",
                    "code": 9831
                }
            },
            "parameters": [
                {
                    "name": "Latitude of natural origin",
                    "value": 13.4724663527778,
                    "unit": "degree",
                    "id": {
                        "authority": "EPSG",
                        "code": 8801
                    }
                },
                {
                    "name": "Longitude of natural origin",
                    "value": 144.748750705556,
                    "unit": "degree",
                    "id": {
                        "authority": "EPSG",
                        "code": 8802
                    }
                },
                {
                    "name": "False easting",
                    "value": 50000,
                    "unit": "metre",
                    "id": {
                        "authority": "EPSG",
                        "code": 8806
                    }
                },
                {
                    "name": "False northing",
                    "value": 50000,
                    "unit": "metre",
                    "id": {
                        "authority": "EPSG",
                        "code": 8807
                    }
                }
            ]
        },
        "coordinate_system": {
            "subtype": "Cartesian",
            "axis": [
                {
                    "name": "Easting",
                    "abbreviation": "X",
                    "direction": "east",
                    "unit": "metre"
                },
                {
                    "name": "Northing",
                    "abbreviation": "Y",
                    "direction": "north",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 3993
        }
    },
    "target_crs": {
        "type": "GeographicCRS",
        "name": "NAD83(HARN)",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "NAD83 (High Accuracy Reference Network)",
            "ellipsoid": {
                "name": "GRS 1980",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257222101
            }
        },
        "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": 4152
        }
    },
    "transformation": {
        "name": "Guam 1963 to NAD83(HARN) (1)",
        "method": {
            "name": "NADCON",
            "id": {
                "authority": "EPSG",
                "code": 9613
            }
        },
        "parameters": [
            {
                "name": "Latitude difference file",
                "value": "guhpgn.las",
                "id": {
                    "authority": "EPSG",
                    "code": 8657
                }
            },
            {
                "name": "Longitude difference file",
                "value": "guhpgn.los",
                "id": {
                    "authority": "EPSG",
                    "code": 8658
                }
            }
        ],
        "id": {
            "authority": "EPSG",
            "code": 1068
        }
    }
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=aeqd"
	"guam"
	"lat_0=13.4724663527778"
	"lon_0=144.748750705556"
	"x_0=50000"
	"y_0=50000"
	"ellps=clrk66"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=aeqd +guam +lat_0=13.4724663527778 +lon_0=144.748750705556 +x_0=50000 +y_0=50000 +ellps=clrk66 +units=m +no_defs +type=crs">
	<Layer srs="+proj=aeqd +guam +lat_0=13.4724663527778 +lon_0=144.748750705556 +x_0=50000 +y_0=50000 +ellps=clrk66 +units=m +no_defs +type=crs">
	</Layer>
</Map>

EPSG:3993