EPSG:7007

Clarke 1858

Attributes

Unit: Clarke's foot

Data source: EPSG

Information source: "Ellipsoidisch Parameter der Erdfigur (1800-1950)" by Georg Strasser.

Revision date: 2005-08-14

Remarks: Clarke's 1858/II solution. Derived parameters: a = 6378293.645m using his 1865 ratio of 0.3047972654 feet per metre; 1/f = 294.26068… In Australia and Amoco Trinidad 1/f taken to two decimal places (294.26 exactly); elsewhere a and b used to derive 1/f.

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Definition: OGC Well Known Text

SPHEROID["Clarke 1858",6378293.64520876,294.260676369261,
    AUTHORITY["EPSG","7007"]]

Definition: OGC Well Known Text 2 (2019)

ELLIPSOID["Clarke 1858",20926348,294.260676369261,
    LENGTHUNIT["Clarke's foot",0.3047972654],
    ID["EPSG",7007]]

Definition: ESRI Well Known Text

SPHEROID["Clarke_1858",6378293.64520876,294.260676369261]

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Ellipsoid",
    "name": "Clarke 1858",
    "semi_major_axis": {
        "value": 20926348,
        "unit": {
            "type": "LinearUnit",
            "name": "Clarke's foot",
            "conversion_factor": 0.3047972654
        }
    },
    "semi_minor_axis": {
        "value": 20855233,
        "unit": {
            "type": "LinearUnit",
            "name": "Clarke's foot",
            "conversion_factor": 0.3047972654
        }
    },
    "id": {
        "authority": "EPSG",
        "code": 7007
    }
}

Definition: GeoServer

7007-ellipsoid=SPHEROID["Clarke 1858",6378293.64520876,294.260676369261,AUTHORITY["EPSG","7007"]]