EPSG:4209

Arc 1950

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

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Method: Geocentric translations (geog2D domain)

Remarks: Derived at 41 stations. Accuracy 20m, 33m and 20m in X, Y and Z axes.

Information source: U.S. Defense Mapping Agency TR8350.2 September 1987.

Revision date: 2020-03-14

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: Arc 1950

Datum: Arc 1950

Ellipsoid: Clarke 1880 (Arc)

Prime meridian: Greenwich

Data source: EPSG

Revision date: 2004-01-06

Scope: Geodesy.

Area of use: Botswana; Malawi; Zambia; Zimbabwe.

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

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Center coordinates
27.96 -19.42

WGS84 bounds:
19.99 -30.66
35.93 -8.19

Botswana; Eswatini (Swaziland); Lesotho; Malawi; Zambia; Zimbabwe.
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Definition: OGC Well Known Text

GEOGCS["Arc 1950",
    DATUM["Arc_1950",
        SPHEROID["Clarke 1880 (Arc)",6378249.145,293.4663077],
        TOWGS84[-143,-90,-294,0,0,0,0]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4209"]]

Definition: OGC Well Known Text 2 (2019)

GEOGCRS["Arc 1950",
    DATUM["Arc 1950",
        ELLIPSOID["Clarke 1880 (Arc)",6378249.145,293.4663077,
            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["Botswana; Malawi; Zambia; Zimbabwe."],
        BBOX[-26.88,19.99,-8.19,35.93]],
    ID["EPSG",4209]]

Definition: ESRI Well Known Text

GEOGCS["GCS_Arc_1950",
    DATUM["D_Arc_1950",
        SPHEROID["Clarke_1880_Arc",6378249.145,293.4663077]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]]

Definition: PROJ.4

+proj=longlat +a=6378249.145 +rf=293.4663077 +towgs84=-143,-90,-294,0,0,0,0 +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4209","+proj=longlat +a=6378249.145 +rf=293.4663077 +towgs84=-143,-90,-294,0,0,0,0 +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeographicCRS",
    "name": "Arc 1950",
    "datum": {
        "type": "GeodeticReferenceFrame",
        "name": "Arc 1950",
        "ellipsoid": {
            "name": "Clarke 1880 (Arc)",
            "semi_major_axis": 6378249.145,
            "inverse_flattening": 293.4663077
        }
    },
    "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": "Botswana; Malawi; Zambia; Zimbabwe.",
    "bbox": {
        "south_latitude": -26.88,
        "west_longitude": 19.99,
        "north_latitude": -8.19,
        "east_longitude": 35.93
    },
    "id": {
        "authority": "EPSG",
        "code": 4209
    }
}

Definition: GeoServer

4209=GEOGCS["Arc 1950",DATUM["Arc_1950",SPHEROID["Clarke 1880 (Arc)",6378249.145,293.4663077],TOWGS84[-143,-90,-294,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4209"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"a=6378249.145"
	"rf=293.4663077"
	"towgs84=-143,-90,-294,0,0,0,0"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +a=6378249.145 +rf=293.4663077 +towgs84=-143,-90,-294,0,0,0,0 +no_defs +type=crs">
	<Layer srs="+proj=longlat +a=6378249.145 +rf=293.4663077 +towgs84=-143,-90,-294,0,0,0,0 +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4209, 'EPSG', 4209, '+proj=longlat +a=6378249.145 +rf=293.4663077 +towgs84=-143,-90,-294,0,0,0,0 +no_defs +type=crs', 'GEOGCS["Arc 1950",DATUM["Arc_1950",SPHEROID["Clarke 1880 (Arc)",6378249.145,293.4663077],TOWGS84[-143,-90,-294,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4209"]]');