EPSG:4703

Mhast 1951

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: Mhast 1951

Datum: Missao Hidrografico Angola y Sao Tome 1951

Ellipsoid: Clarke 1880 (RGS)

Prime meridian: Greenwich

Data source: EPSG

Information source: Various industry sources.

Revision date: 2006-01-03

Scope: Coastal hydrography. Not used by oil industry.

Remarks: A variation of this system has been adopted by the oil industry but using the International 1924 ellipsoid - see Mhast (onshore) and Mhast (offshore) (codes 4704 and 4705).

Area of use: Angola - Cabinda.

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

Covered area powered by MapTiler MapTiler logo
SimpleMap

Center coordinates
11.81 -5.21

WGS84 bounds:
10.53 -6.04
13.1 -4.38

Angola - Cabinda.
MapTiler banner

Definition: OGC Well Known Text

GEOGCS["Mhast 1951",
    DATUM["Missao_Hidrografico_Angola_y_Sao_Tome_1951",
        SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465,
            AUTHORITY["EPSG","7012"]],
        AUTHORITY["EPSG","6703"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4703"]]

Definition: OGC Well Known Text 2 (2019)

GEOGCRS["Mhast 1951",
    DATUM["Missao Hidrografico Angola y Sao Tome 1951",
        ELLIPSOID["Clarke 1880 (RGS)",6378249.145,293.465,
            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["Coastal hydrography. Not used by oil industry."],
        AREA["Angola - Cabinda."],
        BBOX[-6.04,10.53,-4.38,13.1]],
    ID["EPSG",4703]]

Definition: ESRI Well Known Text

GEOGCS["GCS_Mhast_1951",
    DATUM["D_Mhast_1951",
        SPHEROID["Clarke_1880_RGS",6378249.145,293.465]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]]

Definition: PROJ.4

+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4703","+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeographicCRS",
    "name": "Mhast 1951",
    "datum": {
        "type": "GeodeticReferenceFrame",
        "name": "Missao Hidrografico Angola y Sao Tome 1951",
        "ellipsoid": {
            "name": "Clarke 1880 (RGS)",
            "semi_major_axis": 6378249.145,
            "inverse_flattening": 293.465
        }
    },
    "coordinate_system": {
        "subtype": "ellipsoidal",
        "axis": [
            {
                "name": "Geodetic latitude",
                "abbreviation": "Lat",
                "direction": "north",
                "unit": "degree"
            },
            {
                "name": "Geodetic longitude",
                "abbreviation": "Lon",
                "direction": "east",
                "unit": "degree"
            }
        ]
    },
    "scope": "Coastal hydrography. Not used by oil industry.",
    "area": "Angola - Cabinda.",
    "bbox": {
        "south_latitude": -6.04,
        "west_longitude": 10.53,
        "north_latitude": -4.38,
        "east_longitude": 13.1
    },
    "id": {
        "authority": "EPSG",
        "code": 4703
    }
}

Definition: GeoServer

4703=GEOGCS["Mhast 1951",DATUM["Missao_Hidrografico_Angola_y_Sao_Tome_1951",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465,AUTHORITY["EPSG","7012"]],AUTHORITY["EPSG","6703"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4703"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"a=6378249.145"
	"rf=293.465"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs">
	<Layer srs="+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4703, 'EPSG', 4703, '+proj=longlat +a=6378249.145 +rf=293.465 +no_defs +type=crs', 'GEOGCS["Mhast 1951",DATUM["Missao_Hidrografico_Angola_y_Sao_Tome_1951",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465,AUTHORITY["EPSG","7012"]],AUTHORITY["EPSG","6703"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4703"]]');