EPSG:7009 DEPRECATED

Clarke 1866 Michigan

Attributes

Unit: US survey foot

Data source: EPSG

Information source: USGS Professional Paper #1395.

Revision date: 1995-06-02

Remarks: Used for Michigan NAD27 State Plane zones. Radius = ellipsoid radius + 800 feet; this approximates the average elevation of the state. Derived parameter: 1/f = 294.97870

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Definition: OGC Well Known Text

SPHEROID["Clarke 1866 Michigan",6378450.0475489,294.978697164677,
    AUTHORITY["EPSG","7009"]]

Definition: OGC Well Known Text 2 (2019)

ELLIPSOID["Clarke 1866 Michigan",20926631.531,294.978697164677,
    LENGTHUNIT["US survey foot",0.304800609601219],
    ID["EPSG",7009]]

Definition: ESRI Well Known Text

SPHEROID["Clarke_1866_Michigan",6378450.0475489,294.978697164677]

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json",
    "type": "Ellipsoid",
    "name": "Clarke 1866 Michigan",
    "semi_major_axis": {
        "value": 20926631.531,
        "unit": {
            "type": "LinearUnit",
            "name": "US survey foot",
            "conversion_factor": 0.304800609601219
        }
    },
    "semi_minor_axis": {
        "value": 20855688.674,
        "unit": {
            "type": "LinearUnit",
            "name": "US survey foot",
            "conversion_factor": 0.304800609601219
        }
    },
    "id": {
        "authority": "EPSG",
        "code": 7009
    }
}

Definition: GeoServer

7009-ellipsoid=SPHEROID["Clarke 1866 Michigan",6378450.0475489,294.978697164677,AUTHORITY["EPSG","7009"]]