EPSG:6821

Voirol 1879 (Paris)

Attributes

Ellipsoid: Clarke 1880 (IGN)

Prime meridian: Paris

Data source: EPSG

Information source: IGN Paris

Revision date: 2004-01-07

Scope: Topographic mapping.

Remarks: Replaces Voirol 1875 (Paris) (code 6811).

Area of use: Algeria - onshore north of 32°N.

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SimpleMap

WGS84 bounds:
9.09 31.99
-2.95 37.14

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Definition: OGC Well Known Text

DATUM["Voirol_1879_Paris",
    SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627,
        AUTHORITY["EPSG","7011"]],
    AUTHORITY["EPSG","6821"]],
PRIMEM["Paris",2.33722917,
    AUTHORITY["EPSG","8903"]]

Definition: OGC Well Known Text 2 (2019)

DATUM["Voirol 1879 (Paris)",
    ELLIPSOID["Clarke 1880 (IGN)",6378249.2,293.466021293627,
        LENGTHUNIT["metre",1]],
    ID["EPSG",6821]],
PRIMEM["Paris",2.5969213,
    ANGLEUNIT["grad",0.0157079632679489],
    ID["EPSG",8903]]

Definition: ESRI Well Known Text

DATUM["Voirol_1879_(Paris)",
    SPHEROID["Clarke_1880_IGN",6378249.2,293.466021293627]],
PRIMEM["Paris",2.33722917]

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "GeodeticReferenceFrame",
    "name": "Voirol 1879 (Paris)",
    "ellipsoid": {
        "name": "Clarke 1880 (IGN)",
        "semi_major_axis": 6378249.2,
        "semi_minor_axis": 6356515
    },
    "prime_meridian": {
        "name": "Paris",
        "longitude": {
            "value": 2.5969213,
            "unit": {
                "type": "AngularUnit",
                "name": "grad",
                "conversion_factor": 0.0157079632679489
            }
        }
    },
    "scope": "Topographic mapping.",
    "area": "Algeria - onshore north of 32°N.",
    "bbox": {
        "south_latitude": 31.99,
        "west_longitude": -2.95,
        "north_latitude": 37.14,
        "east_longitude": 9.09
    },
    "id": {
        "authority": "EPSG",
        "code": 6821
    }
}

Definition: GeoServer

6821-datum=DATUM["Voirol_1879_Paris",SPHEROID["Clarke 1880 (IGN)",6378249.2,293.466021293627,AUTHORITY["EPSG","7011"]],AUTHORITY["EPSG","6821"]],PRIMEM["Paris",2.33722917,AUTHORITY["EPSG","8903"]]