EPSG:4913 - ITRF91

Attributes

Unit

metre

Scope

Geodesy.

Remarks

None

Area of use

World.

Data Source: EPSG v11.016 2024-08-31

Datum: International Terrestrial Reference Frame 1991

Coordinate System: cartesian

Projection: Undefined

Geodetic CRS: Undefined

Export

GEODCRS["ITRF91",
    DYNAMIC[
        FRAMEEPOCH[1988]],
    DATUM["International Terrestrial Reference Frame 1991",
        ELLIPSOID["GRS 1980",6378137,298.257222101,
            LENGTHUNIT["metre",1]]],
    PRIMEM["Greenwich",0,
        ANGLEUNIT["degree",0.0174532925199433]],
    CS[Cartesian,3],
        AXIS["(X)",geocentricX,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["(Y)",geocentricY,
            ORDER[2],
            LENGTHUNIT["metre",1]],
        AXIS["(Z)",geocentricZ,
            ORDER[3],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Geodesy."],
        AREA["World."],
        BBOX[-90,-180,90,180]],
    ID["EPSG",4913]]
{
  "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
  "type": "GeodeticCRS",
  "name": "ITRF91",
  "datum": {
    "type": "DynamicGeodeticReferenceFrame",
    "name": "International Terrestrial Reference Frame 1991",
    "frame_reference_epoch": 1988,
    "ellipsoid": {
      "name": "GRS 1980",
      "semi_major_axis": 6378137,
      "inverse_flattening": 298.257222101
    }
  },
  "coordinate_system": {
    "subtype": "Cartesian",
    "axis": [
      {
        "name": "Geocentric X",
        "abbreviation": "X",
        "direction": "geocentricX",
        "unit": "metre"
      },
      {
        "name": "Geocentric Y",
        "abbreviation": "Y",
        "direction": "geocentricY",
        "unit": "metre"
      },
      {
        "name": "Geocentric Z",
        "abbreviation": "Z",
        "direction": "geocentricZ",
        "unit": "metre"
      }
    ]
  },
  "scope": "Geodesy.",
  "area": "World.",
  "bbox": {
    "south_latitude": -90,
    "west_longitude": -180,
    "north_latitude": 90,
    "east_longitude": 180
  },
  "id": {
    "authority": "EPSG",
    "code": 4913
  }
}
{'crs_wkt': 'GEODCRS["ITRF91",DYNAMIC[FRAMEEPOCH[1988]],DATUM["International '
            'Terrestrial Reference Frame 1991",ELLIPSOID["GRS '
            '1980",6378137,298.257222101,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],CS[Cartesian,3],AXIS["(X)",geocentricX,ORDER[1],LENGTHUNIT["metre",1]],AXIS["(Y)",geocentricY,ORDER[2],LENGTHUNIT["metre",1]],AXIS["(Z)",geocentricZ,ORDER[3],LENGTHUNIT["metre",1]],USAGE[SCOPE["Geodesy."],AREA["World."],BBOX[-90,-180,90,180]],ID["EPSG",4913]]'}