EPSG:4638

Saint Pierre et Miquelon 1950

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

Selected transformation

Method: Geocentric translations (geog2D domain)

Remarks: Replaces Saint Pierre et Miquelon 1950 to WGS 84 (1) (code 1923) from March 2006. Accuracy +/- 0.5 to 1 metre.

Information source: Institut Geographique National (IGN); http://geodesie.ign.fr/

Revision date: 2020-03-14

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: Saint Pierre et Miquelon 1950

Datum: Saint Pierre et Miquelon 1950

Ellipsoid: Clarke 1866

Prime meridian: Greenwich

Data source: EPSG

Information source: IGN Paris

Revision date: 2011-01-25

Scope: Geodesy.

Remarks: Replaced by RGSPM06 (CRS code 4463).

Area of use: St Pierre and Miquelon - onshore.

Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree

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Center coordinates
-56.28 46.94

WGS84 bounds:
-56.48 46.69
-56.07 47.19

St Pierre and Miquelon - onshore.
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Definition: OGC Well Known Text

GEOGCS["Saint Pierre et Miquelon 1950",
    DATUM["Saint_Pierre_et_Miquelon_1950",
        SPHEROID["Clarke 1866",6378206.4,294.978698213898],
        TOWGS84[11.363,424.148,373.13,0,0,0,0]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4638"]]

Definition: OGC Well Known Text 2 (2019)

GEOGCRS["Saint Pierre et Miquelon 1950",
    DATUM["Saint Pierre et Miquelon 1950",
        ELLIPSOID["Clarke 1866",6378206.4,294.978698213898,
            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["Geodesy."],
        AREA["St Pierre and Miquelon - onshore."],
        BBOX[46.69,-56.48,47.19,-56.07]],
    ID["EPSG",4638]]

Definition: ESRI Well Known Text

GEOGCS["GCS_Saint_Pierre_et_Miquelon_1950",
    DATUM["D_Saint_Pierre_et_Miquelon_1950",
        SPHEROID["Clarke_1866",6378206.4,294.978698213898]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]]

Definition: PROJ.4

+proj=longlat +ellps=clrk66 +towgs84=11.363,424.148,373.13,0,0,0,0 +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4638","+proj=longlat +ellps=clrk66 +towgs84=11.363,424.148,373.13,0,0,0,0 +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeographicCRS",
    "name": "Saint Pierre et Miquelon 1950",
    "datum": {
        "type": "GeodeticReferenceFrame",
        "name": "Saint Pierre et Miquelon 1950",
        "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"
            }
        ]
    },
    "scope": "Geodesy.",
    "area": "St Pierre and Miquelon - onshore.",
    "bbox": {
        "south_latitude": 46.69,
        "west_longitude": -56.48,
        "north_latitude": 47.19,
        "east_longitude": -56.07
    },
    "id": {
        "authority": "EPSG",
        "code": 4638
    }
}

Definition: GeoServer

4638=GEOGCS["Saint Pierre et Miquelon 1950",DATUM["Saint_Pierre_et_Miquelon_1950",SPHEROID["Clarke 1866",6378206.4,294.978698213898],TOWGS84[11.363,424.148,373.13,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4638"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"ellps=clrk66"
	"towgs84=11.363,424.148,373.13,0,0,0,0"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +ellps=clrk66 +towgs84=11.363,424.148,373.13,0,0,0,0 +no_defs +type=crs">
	<Layer srs="+proj=longlat +ellps=clrk66 +towgs84=11.363,424.148,373.13,0,0,0,0 +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4638, 'EPSG', 4638, '+proj=longlat +ellps=clrk66 +towgs84=11.363,424.148,373.13,0,0,0,0 +no_defs +type=crs', 'GEOGCS["Saint Pierre et Miquelon 1950",DATUM["Saint_Pierre_et_Miquelon_1950",SPHEROID["Clarke 1866",6378206.4,294.978698213898],TOWGS84[11.363,424.148,373.13,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4638"]]');