Unit: degree (supplier to define representation)
Geodetic CRS: EST97
Datum: Estonia 1997
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: EPSG. See 3D CRS for original information source.
Revision date: 2007-08-27
Scope: Horizontal component of 3D system.
Remarks: This name is also used for a projected CRS (see projCRS code 3301). Replaces EST92 (code 4133).
Area of use: Estonia - onshore and offshore.
Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.4/projjson.schema.json", "type": "GeographicCRS", "name": "EST97", "datum": { "type": "GeodeticReferenceFrame", "name": "Estonia 1997", "ellipsoid": { "name": "GRS 1980", "semi_major_axis": 6378137, "inverse_flattening": 298.257222101 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "scope": "Horizontal component of 3D system.", "area": "Estonia - onshore and offshore.", "bbox": { "south_latitude": 57.52, "west_longitude": 20.37, "north_latitude": 60, "east_longitude": 28.2 }, "id": { "authority": "EPSG", "code": 4180 } }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=longlat +ellps=GRS80 +no_defs +type=crs"> <Layer srs="+proj=longlat +ellps=GRS80 +no_defs +type=crs"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 4180, 'EPSG', 4180, '+proj=longlat +ellps=GRS80 +no_defs +type=crs', 'GEOGCS["EST97",DATUM["Estonia_1997",SPHEROID["GRS 1980",6378137,298.257222101]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4180"]]');
Definition: OGC WKT 2 (2019)
GEOGCRS["EST97",DATUM["Estonia 1997",ELLIPSOID["GRS 1980",6378137,298.257222101,LENGTHUNIT["metre",1]]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],CS[ellipsoidal,2],AXIS["geodetic latitude (Lat)",north,ORDER[1],ANGLEUNIT["degree",0.0174532925199433]],AXIS["geodetic longitude (Lon)",east,ORDER[2],ANGLEUNIT["degree",0.0174532925199433]],USAGE[SCOPE["Horizontal component of 3D system."],AREA["Estonia - onshore and offshore."],BBOX[57.52,20.37,60,28.2]],ID["EPSG",4180]]