EPSG:4701

IGCB 1955

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

Selected transformation

Method: Geocentric translations (geog2D domain)

Remarks: Derived by Topnav in 1991 at station TSH 85.

Information source: Petrofina

Revision date: 2020-03-14

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: IGCB 1955

Datum: Institut Geographique du Congo Belge 1955

Ellipsoid: Clarke 1880 (RGS)

Prime meridian: Greenwich

Data source: EPSG

Information source: Institut Geographique du Bas Congo.

Revision date: 2005-11-28

Scope: Geodesy.

Remarks: Replaced by IGC 1962 Arc of the 6th Parallel South, except for oil industry activities.

Area of use: The Democratic Republic of the Congo (Zaire) - Lower Congo (Bas Congo)

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

Center coordinates
14.23 -5.16

WGS84 bounds:
12.17 -6.04
16.28 -4.28

The Democratic Republic of the Congo (Zaire) - Lower Congo (Bas Congo)
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Definition: OGC Well Known Text

GEOGCS["IGCB 1955",
    DATUM["Institut_Geographique_du_Congo_Belge_1955",
        SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],
        TOWGS84[-79.9,-158,-168.9,0,0,0,0]],
    PRIMEM["Greenwich",0,
        AUTHORITY["EPSG","8901"]],
    UNIT["degree",0.0174532925199433,
        AUTHORITY["EPSG","9122"]],
    AUTHORITY["EPSG","4701"]]

Definition: OGC Well Known Text 2 (2019)

GEOGCRS["IGCB 1955",
    DATUM["Institut Geographique du Congo Belge 1955",
        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["Geodesy."],
        AREA["The Democratic Republic of the Congo (Zaire) - Lower Congo (Bas Congo)"],
        BBOX[-6.04,12.17,-4.28,16.28]],
    ID["EPSG",4701]]

Definition: ESRI Well Known Text

GEOGCS["GCS_IGCB_1955",
    DATUM["D_Institut_Geographique_du_Congo_Belge_1955",
        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 +towgs84=-79.9,-158,-168.9,0,0,0,0 +no_defs +type=crs

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:4701","+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-79.9,-158,-168.9,0,0,0,0 +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json",
    "type": "GeographicCRS",
    "name": "IGCB 1955",
    "datum": {
        "type": "GeodeticReferenceFrame",
        "name": "Institut Geographique du Congo Belge 1955",
        "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": "Geodesy.",
    "area": "The Democratic Republic of the Congo (Zaire) - Lower Congo (Bas Congo)",
    "bbox": {
        "south_latitude": -6.04,
        "west_longitude": 12.17,
        "north_latitude": -4.28,
        "east_longitude": 16.28
    },
    "id": {
        "authority": "EPSG",
        "code": 4701
    }
}

Definition: GeoServer

4701=GEOGCS["IGCB 1955",DATUM["Institut_Geographique_du_Congo_Belge_1955",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-79.9,-158,-168.9,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4701"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"a=6378249.145"
	"rf=293.465"
	"towgs84=-79.9,-158,-168.9,0,0,0,0"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-79.9,-158,-168.9,0,0,0,0 +no_defs +type=crs">
	<Layer srs="+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-79.9,-158,-168.9,0,0,0,0 +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4701, 'EPSG', 4701, '+proj=longlat +a=6378249.145 +rf=293.465 +towgs84=-79.9,-158,-168.9,0,0,0,0 +no_defs +type=crs', 'GEOGCS["IGCB 1955",DATUM["Institut_Geographique_du_Congo_Belge_1955",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465],TOWGS84[-79.9,-158,-168.9,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4701"]]');