Clarke 1880 (Arc)


Unit: metre

Data source: EPSG

Information source: Chief Directorate: Surveys and Mapping, Mowbray, South Africa.

Revision date: 2001-06-05

Remarks: Adopts Clarke's value for a with derived 1/f. Uses his 1865 ratio of 39.370432 inch per metre to convert semi-major axis to metres.

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Definition: Well Known Text (WKT)

SPHEROID["Clarke 1880 (Arc)",6378249.145,293.4663077,

Definition: ESRI WKT


Definition: JSON

    "$schema": "https://proj.org/schemas/v0.4/projjson.schema.json",
    "type": "Ellipsoid",
    "name": "Clarke 1880 (Arc)",
    "semi_major_axis": 6378249.145,
    "inverse_flattening": 293.4663077,
    "id": {
        "authority": "EPSG",
        "code": 7013

Definition: GeoServer

7013-ellipsoid=SPHEROID["Clarke 1880 (Arc)",6378249.145,293.4663077,AUTHORITY["EPSG","7013"]]

Definition: OGC WKT

SPHEROID["Clarke 1880 (Arc)",6378249.145,293.4663077,AUTHORITY["EPSG","7013"]]

Definition: OGC WKT 2 (2019)

ELLIPSOID["Clarke 1880 (Arc)",6378249.145,293.4663077,LENGTHUNIT["metre",1],ID["EPSG",7013]]