Geodetic CRS: Amersfoort
Datum: Amersfoort
Ellipsoid: Bessel 1841
Prime meridian: Greenwich
Data source: EPSG
Information source: NSGI: Netherlands partnership of Kadaster, Rijkswaterstaat and Hydrographic Service, http://www.nsgi.nl/
Revision date: 2025-12-25
Scope: Horizontal component of official 3D RDNAPTRANS(TM)2018 transformation. Accuracy by definition exact.
Remarks: Defines Amersfoort (also known as RD Bessel). Horizontal component of official transformation RDNAPTRANS(TM)2018. Replaces Amersfoort to ETRS89 (7) (CT code 7000).
Method: NTv2
Area of use: Netherlands - onshore and offshore.
Description: (0,)
Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["Amersfoort to ETRS89-NLD [AGRS2010] (9)", VERSION["NSGI-Nld 2018"], SOURCECRS[ GEOGCRS["Amersfoort", DATUM["Amersfoort", ELLIPSOID["Bessel 1841",6377397.155,299.1528128, 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]], ID["EPSG",4289]]], TARGETCRS[ GEOGCRS["ETRS89-NLD [AGRS2010]", DATUM["AGRS2010 (ETRF2000)", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]], ANCHOREPOCH[2010.5]], 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]], ID["EPSG",11037]]], METHOD["NTv2", ID["EPSG",9615]], PARAMETERFILE["Latitude and longitude difference file","rdtrans2018.gsb"], OPERATIONACCURACY[0.0], USAGE[ SCOPE["Horizontal component of official 3D RDNAPTRANS(TM)2018 transformation. Accuracy by definition exact."], AREA["Netherlands - onshore and offshore."], BBOX[50.75,2.53,55.77,7.22]], ID["EPSG",9282], REMARK["Defines Amersfoort (also known as RD Bessel). Horizontal component of official transformation RDNAPTRANS(TM)2018. Replaces Amersfoort to ETRS89 (7) (CT code 7000)."]]
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:9282","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=nl_nsgi_rdtrans2018.tif +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1");
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "Transformation", "name": "Amersfoort to ETRS89-NLD [AGRS2010] (9)", "source_crs": { "type": "GeographicCRS", "name": "Amersfoort", "datum": { "type": "GeodeticReferenceFrame", "name": "Amersfoort", "ellipsoid": { "name": "Bessel 1841", "semi_major_axis": 6377397.155, "inverse_flattening": 299.1528128 } }, "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": 4289 }, "remarks": "Use of geographic2D CRS Amersfoort (code 4289) for spatial referencing is discouraged. Use projected CRS Amersfoort / RD New (code 28992) or ETRS89-NLD [AGRS2010] (code 11037)." }, "target_crs": { "type": "GeographicCRS", "name": "ETRS89-NLD [AGRS2010]", "datum": { "type": "GeodeticReferenceFrame", "name": "AGRS2010 (ETRF2000)", "anchor_epoch": 2010.5, "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" } ] }, "id": { "authority": "EPSG", "code": 11037 }, "remarks": "Horizontal component of national realization of ETRS89 in the Netherlands, aligned to ETRF2000." }, "method": { "name": "NTv2", "id": { "authority": "EPSG", "code": 9615 } }, "parameters": [ { "name": "Latitude and longitude difference file", "value": "rdtrans2018.gsb", "id": { "authority": "EPSG", "code": 8656 } } ], "accuracy": "0.0", "scope": "Horizontal component of official 3D RDNAPTRANS(TM)2018 transformation. Accuracy by definition exact.", "area": "Netherlands - onshore and offshore.", "bbox": { "south_latitude": 50.75, "west_longitude": 2.53, "north_latitude": 55.77, "east_longitude": 7.22 }, "id": { "authority": "EPSG", "code": 9282 }, "remarks": "Defines Amersfoort (also known as RD Bessel). Horizontal component of official transformation RDNAPTRANS(TM)2018. Replaces Amersfoort to ETRS89 (7) (CT code 7000)." }
Definition: MapServer - MAPfile
PROJECTION "proj=pipeline" "step" "proj=axisswap" "order=2,1" "step" "proj=unitconvert" "xy_in=deg" "xy_out=rad" "step" "proj=hgridshift" "grids=nl_nsgi_rdtrans2018.tif" "step" "proj=unitconvert" "xy_in=rad" "xy_out=deg" "step" "proj=axisswap" "order=2,1" END
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=nl_nsgi_rdtrans2018.tif +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1"> <Layer srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=nl_nsgi_rdtrans2018.tif +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 9282, 'EPSG', 9282, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=nl_nsgi_rdtrans2018.tif +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');