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Geodetic CRS: MAGNA-SIRGAS 2018
Datum: Marco Geocentrico Nacional de Referencia 2018
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: Instituto Geografico Agustin Codazzi (IGAC) Resolution 515 of 2026, http://www.igac.gov.co/ and Liu et al. "High-resolution regional gravity field modeling ...", Earth, Planets and Space (2024) 76:35, https://doi.org/10.1186/s40623-024-01981-1
Revision date: 2026-07-20
Scope: Reversible geoid model transformation.
Remarks: Reversible alternative to MAGNA-SIRGAS 2018 + COLGVD2023 height (1) (code 11896).
Method: Geog3D to Geog2D+GravityRelatedHeight (txt)
Area of use: Colombia - mainland onshore.
Description: (0,)
Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["MAGNA-SIRGAS 2018 to MAGNA-SIRGAS 2018 + COLGVD2023 height (1)", VERSION["IGAC-Col 2023"], SOURCECRS[ GEOGCRS["MAGNA-SIRGAS 2018", DATUM["Marco Geocentrico Nacional de Referencia 2018", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,3], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], AXIS["ellipsoidal height (h)",up, ORDER[3], LENGTHUNIT["metre",1]], ID["EPSG",20045]]], TARGETCRS[ COMPOUNDCRS["MAGNA-SIRGAS 2018 + COLGVD2023 height", GEOGCRS["MAGNA-SIRGAS 2018", DATUM["Marco Geocentrico Nacional de Referencia 2018", 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]]], VERTCRS["COLGVD2023 height", VDATUM["Colombian Geodetic Vertical Datum 2023"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]]], ID["EPSG",11895]]], METHOD["Geog3D to Geog2D+GravityRelatedHeight (txt)", ID["EPSG",1098]], PARAMETERFILE["Geoid (height correction) model file","QgeoidCOL2023.txt"], INTERPOLATIONCRS[ GEOGCRS["MAGNA-SIRGAS 2018", DATUM["Marco Geocentrico Nacional de Referencia 2018", 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]]]], OPERATIONACCURACY[0.04], USAGE[ SCOPE["Reversible geoid model transformation."], AREA["Colombia - mainland onshore."], BBOX[-4.23,-79.1,12.52,-66.87]], ID["EPSG",11897], REMARK["Reversible alternative to MAGNA-SIRGAS 2018 + COLGVD2023 height (1) (code 11896)."]]
Definition: PROJ.4
+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=co_igac_QGeoidCOL2023.tif +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:11897","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=co_igac_QGeoidCOL2023.tif +multiplier=1 +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": "MAGNA-SIRGAS 2018 to MAGNA-SIRGAS 2018 + COLGVD2023 height (1)", "source_crs": { "type": "GeographicCRS", "name": "MAGNA-SIRGAS 2018", "datum": { "type": "GeodeticReferenceFrame", "name": "Marco Geocentrico Nacional de Referencia 2018", "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" }, { "name": "Ellipsoidal height", "abbreviation": "h", "direction": "up", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 20045 } }, "target_crs": { "type": "CompoundCRS", "name": "MAGNA-SIRGAS 2018 + COLGVD2023 height", "components": [ { "type": "GeographicCRS", "name": "MAGNA-SIRGAS 2018", "datum": { "type": "GeodeticReferenceFrame", "name": "Marco Geocentrico Nacional de Referencia 2018", "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" } ] }, "remarks": "Replaces MAGNA-SIRGAS (CRS code 4686) for high accuracy purposes. Change is approximately 0.31m in latitude, 0.02m in longitude. For mapping and cadastral purposes considered equivalent." }, { "type": "VerticalCRS", "name": "COLGVD2023 height", "datum": { "type": "VerticalReferenceFrame", "name": "Colombian Geodetic Vertical Datum 2023" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] } } ], "id": { "authority": "EPSG", "code": 11895 } }, "interpolation_crs": { "type": "GeographicCRS", "name": "MAGNA-SIRGAS 2018", "datum": { "type": "GeodeticReferenceFrame", "name": "Marco Geocentrico Nacional de Referencia 2018", "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": 20046 }, "remarks": "Replaces MAGNA-SIRGAS (CRS code 4686) for high accuracy purposes. Change is approximately 0.31m in latitude, 0.02m in longitude. For mapping and cadastral purposes considered equivalent." }, "method": { "name": "Geog3D to Geog2D+GravityRelatedHeight (txt)", "id": { "authority": "EPSG", "code": 1098 } }, "parameters": [ { "name": "Geoid (height correction) model file", "value": "QgeoidCOL2023.txt", "id": { "authority": "EPSG", "code": 8666 } } ], "accuracy": "0.04", "scope": "Reversible geoid model transformation.", "area": "Colombia - mainland onshore.", "bbox": { "south_latitude": -4.23, "west_longitude": -79.1, "north_latitude": 12.52, "east_longitude": -66.87 }, "id": { "authority": "EPSG", "code": 11897 }, "remarks": "Reversible alternative to MAGNA-SIRGAS 2018 + COLGVD2023 height (1) (code 11896)." }
Definition: MapServer - MAPfile
PROJECTION "proj=pipeline" "step" "proj=axisswap" "order=2,1" "step" "proj=unitconvert" "xy_in=deg" "xy_out=rad" "step" "inv" "proj=vgridshift" "grids=co_igac_QGeoidCOL2023.tif" "multiplier=1" "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 +inv +proj=vgridshift +grids=co_igac_QGeoidCOL2023.tif +multiplier=1 +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 +inv +proj=vgridshift +grids=co_igac_QGeoidCOL2023.tif +multiplier=1 +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 ( 11897, 'EPSG', 11897, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=co_igac_QGeoidCOL2023.tif +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');
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