Unit: degree (supplier to define representation)
Geodetic CRS: Unknown datum based upon the GRS 1980 ellipsoid
Datum: Not specified (based on GRS 1980 ellipsoid)
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: OGP
Revision date: 2004-01-06
Scope: Not recommended.
Remarks: Use only in cases where geodetic datum is unknown.
Area of use: Not specified.
Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree
Definition: Well Known Text (WKT)
GEOGCS["Unknown datum based upon the GRS 1980 ellipsoid", DATUM["Not_specified_based_on_GRS_1980_ellipsoid", SPHEROID["GRS 1980",6378137,298.257222101]], PRIMEM["Greenwich",0], UNIT["degree",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","4019"]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.4/projjson.schema.json", "type": "GeographicCRS", "name": "Unknown datum based upon the GRS 1980 ellipsoid", "datum": { "type": "GeodeticReferenceFrame", "name": "Not specified (based on GRS 1980 ellipsoid)", "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": "Not recommended.", "area": "Not specified.", "bbox": { "south_latitude": -90, "west_longitude": -180, "north_latitude": 90, "east_longitude": 180 }, "id": { "authority": "EPSG", "code": 4019 } }
Definition: GeoServer
4019=GEOGCS["Unknown datum based upon the GRS 1980 ellipsoid",DATUM["Not_specified_based_on_GRS_1980_ellipsoid",SPHEROID["GRS 1980",6378137,298.257222101]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4019"]]
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 ( 4019, 'EPSG', 4019, '+proj=longlat +ellps=GRS80 +no_defs +type=crs', 'GEOGCS["Unknown datum based upon the GRS 1980 ellipsoid",DATUM["Not_specified_based_on_GRS_1980_ellipsoid",SPHEROID["GRS 1980",6378137,298.257222101]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4019"]]');
Definition: OGC WKT
GEOGCS["Unknown datum based upon the GRS 1980 ellipsoid",DATUM["Not_specified_based_on_GRS_1980_ellipsoid",SPHEROID["GRS 1980",6378137,298.257222101]],PRIMEM["Greenwich",0],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4019"]]
Definition: OGC WKT 2 (2019)
GEOGCRS["Unknown datum based upon the GRS 1980 ellipsoid",DATUM["Not specified (based on GRS 1980 ellipsoid)",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["Not recommended."],AREA["Not specified."],BBOX[-90,-180,90,180]],ID["EPSG",4019]]