EPSG:8441 - Hooray!

Attributes

Unit

metre

Scope

Engineering survey, topographic mapping.

Remarks

None

Area of use

Madagascar - onshore.

Data Source: EPSG v11.022 2024-11-05

Datum: Tananarive 1925

Coordinate System: cartesian

Projection: Laborde Grid (Greenwich)

Geodetic CRS: Tananarive

Export

PROJCRS["Tananarive / Laborde Grid",
    BASEGEOGCRS["Tananarive",
        DATUM["Tananarive 1925",
            ELLIPSOID["International 1924",6378388,297,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",4297]],
    CONVERSION["Laborde Grid (Greenwich)",
        METHOD["Laborde Oblique Mercator",
            ID["EPSG",9813]],
        PARAMETER["Latitude of projection centre",-18.9,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8811]],
        PARAMETER["Longitude of projection centre",46.4372291666667,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8812]],
        PARAMETER["Azimuth at projection centre",18.9,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8813]],
        PARAMETER["Scale factor at projection centre",0.9995,
            SCALEUNIT["unity",1],
            ID["EPSG",8815]],
        PARAMETER["False easting",400000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8806]],
        PARAMETER["False northing",800000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8807]]],
    CS[Cartesian,2],
        AXIS["northing (X)",north,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["easting (Y)",east,
            ORDER[2],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Engineering survey, topographic mapping."],
        AREA["Madagascar - onshore."],
        BBOX[-25.64,43.18,-11.89,50.56]],
    ID["EPSG",8441]]

{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "ProjectedCRS",
  "name": "Tananarive / Laborde Grid",
  "base_crs": {
    "name": "Tananarive",
    "datum": {
      "type": "GeodeticReferenceFrame",
      "name": "Tananarive 1925",
      "ellipsoid": {
        "name": "International 1924",
        "semi_major_axis": 6378388,
        "inverse_flattening": 297
      }
    },
    "coordinate_system": {
      "subtype": "ellipsoidal",
      "axis": [
        {
          "name": "Geodetic latitude",
          "abbreviation": "Lat",
          "direction": "north",
          "unit": "degree"
        },
        {
          "name": "Geodetic longitude",
          "abbreviation": "Lon",
          "direction": "east",
          "unit": "degree"
        }
      ]
    },
    "id": {
      "authority": "EPSG",
      "code": 4297
    }
  },
  "conversion": {
    "name": "Laborde Grid (Greenwich)",
    "method": {
      "name": "Laborde Oblique Mercator",
      "id": {
        "authority": "EPSG",
        "code": 9813
      }
    },
    "parameters": [
      {
        "name": "Latitude of projection centre",
        "value": -18.9,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8811
        }
      },
      {
        "name": "Longitude of projection centre",
        "value": 46.4372291666667,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8812
        }
      },
      {
        "name": "Azimuth at projection centre",
        "value": 18.9,
        "unit": "degree",
        "id": {
          "authority": "EPSG",
          "code": 8813
        }
      },
      {
        "name": "Scale factor at projection centre",
        "value": 0.9995,
        "unit": "unity",
        "id": {
          "authority": "EPSG",
          "code": 8815
        }
      },
      {
        "name": "False easting",
        "value": 400000,
        "unit": "metre",
        "id": {
          "authority": "EPSG",
          "code": 8806
        }
      },
      {
        "name": "False northing",
        "value": 800000,
        "unit": "metre",
        "id": {
          "authority": "EPSG",
          "code": 8807
        }
      }
    ]
  },
  "coordinate_system": {
    "subtype": "Cartesian",
    "axis": [
      {
        "name": "Northing",
        "abbreviation": "X",
        "direction": "north",
        "unit": "metre"
      },
      {
        "name": "Easting",
        "abbreviation": "Y",
        "direction": "east",
        "unit": "metre"
      }
    ]
  },
  "scope": "Engineering survey, topographic mapping.",
  "area": "Madagascar - onshore.",
  "bbox": {
    "south_latitude": -25.64,
    "west_longitude": 43.18,
    "north_latitude": -11.89,
    "east_longitude": 50.56
  },
  "id": {
    "authority": "EPSG",
    "code": 8441
  }
}