EPSG:6620

Point 58

Attributes

Ellipsoid: Clarke 1880 (RGS)

Prime meridian: Greenwich

Data source: EPSG

Information source: IGN Paris.

Revision date: 2015-04-22

Scope: Geodesy.

Remarks: Used as the basis for computation of the 12th Parallel traverse conducted 1966-70 from Senegal to Chad and connecting to the Blue Nile 1958 (Adindan) triangulation in Sudan.

Area of use: Senegal - central, Mali - southwest, Burkina Faso - central, Niger - southwest, Nigeria - north, Chad - central. All in proximity to the parallel of latitude of 12°N.

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WGS84 bounds:
30.42 10.26
-17.19 15.7

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Definition: OGC Well Known Text

DATUM["Point_58",
    SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465,
        AUTHORITY["EPSG","7012"]],
    AUTHORITY["EPSG","6620"]]

Definition: OGC Well Known Text 2 (2019)

DATUM["Point 58",
    ELLIPSOID["Clarke 1880 (RGS)",6378249.145,293.465,
        LENGTHUNIT["metre",1]],
    ID["EPSG",6620]]

Definition: ESRI Well Known Text

DATUM["D_Point_58",
    SPHEROID["Clarke_1880_RGS",6378249.145,293.465]]

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeodeticReferenceFrame",
    "name": "Point 58",
    "ellipsoid": {
        "name": "Clarke 1880 (RGS)",
        "semi_major_axis": 6378249.145,
        "inverse_flattening": 293.465
    },
    "scope": "Geodesy.",
    "area": "Senegal - central, Mali - southwest, Burkina Faso - central, Niger - southwest, Nigeria - north, Chad - central. All in proximity to the parallel of latitude of 12°N.",
    "bbox": {
        "south_latitude": 10.26,
        "west_longitude": -17.19,
        "north_latitude": 15.7,
        "east_longitude": 30.42
    },
    "id": {
        "authority": "EPSG",
        "code": 6620
    }
}

Definition: GeoServer

6620-datum=DATUM["Point_58",SPHEROID["Clarke 1880 (RGS)",6378249.145,293.465,AUTHORITY["EPSG","7012"]],AUTHORITY["EPSG","6620"]]