EPSG:4704

Mhast (onshore)

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: Mhast (onshore)

Datum: Mhast (onshore)

Ellipsoid: International 1924

Prime meridian: Greenwich

Data source: EPSG

Information source: ChevronTexaco.

Revision date: 2006-01-06

Scope: Oil and gas exploration and production.

Remarks: Adopted by CABGOC with intention of being Mhast 1951 (CRS code 4703) but because it uses a different ellipsoid it is a different system. From 1979, offshore use replaced by Mhast (offshore) (CRS code 4705) from which this CRS differes by approx. 10m.

Area of use: Angola (Cabinda) - onshore and offshore; The Democratic Republic of the Congo (Zaire) - onshore coastal area and offshore.

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

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Center coordinates
11.81 -5.21

WGS84 bounds:
10.53 -6.04
13.1 -4.38

Angola (Cabinda) - onshore and offshore; The Democratic Republic of the Congo (Zaire) - onshore coastal area and offshore.
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Definition: OGC Well Known Text

GEOGCS["Mhast (onshore)",
    DATUM["Mhast_onshore",
        SPHEROID["International 1924",6378388,297,
            AUTHORITY["EPSG","7022"]],
        AUTHORITY["EPSG","6704"]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4704"]]

Definition: OGC Well Known Text 2 (2019)

GEOGCRS["Mhast (onshore)",
    DATUM["Mhast (onshore)",
        ELLIPSOID["International 1924",6378388,297,
            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["Oil and gas exploration and production."],
        AREA["Angola (Cabinda) - onshore and offshore; The Democratic Republic of the Congo (Zaire) - onshore coastal area and offshore."],
        BBOX[-6.04,10.53,-4.38,13.1]],
    ID["EPSG",4704]]

Definition: ESRI Well Known Text

GEOGCS["GCS_Mhast_Onshore",
    DATUM["D_Mhast_Onshore",
        SPHEROID["International_1924",6378388.0,297.0]],
    PRIMEM["Greenwich",0.0],
    UNIT["Degree",0.0174532925199433]]

Definition: PROJ.4

+proj=longlat +ellps=intl +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4704","+proj=longlat +ellps=intl +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeographicCRS",
    "name": "Mhast (onshore)",
    "datum": {
        "type": "GeodeticReferenceFrame",
        "name": "Mhast (onshore)",
        "ellipsoid": {
            "name": "International 1924",
            "semi_major_axis": 6378388,
            "inverse_flattening": 297
        }
    },
    "coordinate_system": {
        "subtype": "ellipsoidal",
        "axis": [
            {
                "name": "Geodetic latitude",
                "abbreviation": "Lat",
                "direction": "north",
                "unit": "degree"
            },
            {
                "name": "Geodetic longitude",
                "abbreviation": "Lon",
                "direction": "east",
                "unit": "degree"
            }
        ]
    },
    "scope": "Oil and gas exploration and production.",
    "area": "Angola (Cabinda) - onshore and offshore; The Democratic Republic of the Congo (Zaire) - onshore coastal area and offshore.",
    "bbox": {
        "south_latitude": -6.04,
        "west_longitude": 10.53,
        "north_latitude": -4.38,
        "east_longitude": 13.1
    },
    "id": {
        "authority": "EPSG",
        "code": 4704
    }
}

Definition: GeoServer

4704=GEOGCS["Mhast (onshore)",DATUM["Mhast_onshore",SPHEROID["International 1924",6378388,297,AUTHORITY["EPSG","7022"]],AUTHORITY["EPSG","6704"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4704"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"ellps=intl"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +ellps=intl +no_defs +type=crs">
	<Layer srs="+proj=longlat +ellps=intl +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4704, 'EPSG', 4704, '+proj=longlat +ellps=intl +no_defs +type=crs', 'GEOGCS["Mhast (onshore)",DATUM["Mhast_onshore",SPHEROID["International 1924",6378388,297,AUTHORITY["EPSG","7022"]],AUTHORITY["EPSG","6704"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4704"]]');