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Geodetic CRS: IGN Astro 1960
Datum: IGN Astro 1960
Ellipsoid: Clarke 1880 (RGS)
Prime meridian: Greenwich
Data source: EPSG
Information source: "Resultats des calculs de la campagne geodesique realisee dans le cadre du projet du cadastre minier", Direction de la Topographie et de la Cartographie, July 1999.
Revision date: 2006-03-16
Scope: Minerals management (including oil and gas exploration and production).
Remarks: Parameter values consistent with the OGP Affine parametric transformation method derived by OGP from the published Helmert 2D parameter values. May be used for transformations to WGS 84 - see tfm code 15862.
Method: Affine parametric transformation
Area of use: Mauritania - between 12°W and 6°W.
Description: (0,)
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Definition: OGC Well Known Text 2 (2019)
COORDINATEOPERATION["IGN Astro 1960 / UTM zone 29N to Mauritania 1999 / UTM zone 29N (1)", VERSION["MMI-Mau C"], SOURCECRS[ PROJCRS["IGN Astro 1960 / UTM zone 29N", BASEGEOGCRS["IGN Astro 1960", DATUM["IGN Astro 1960", ELLIPSOID["Clarke 1880 (RGS)",6378249.145,293.465, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4700]], CONVERSION["UTM zone 29N", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",-9, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",0.9996, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",500000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",0, LENGTHUNIT["metre",1], ID["EPSG",8807]]], CS[Cartesian,2], AXIS["(E)",east, ORDER[1], LENGTHUNIT["metre",1]], AXIS["(N)",north, ORDER[2], LENGTHUNIT["metre",1]], ID["EPSG",3368]]], TARGETCRS[ PROJCRS["Mauritania 1999 / UTM zone 29N", BASEGEOGCRS["Mauritania 1999", DATUM["Mauritania 1999", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4702]], CONVERSION["UTM zone 29N", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",-9, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["Scale factor at natural origin",0.9996, SCALEUNIT["unity",1], ID["EPSG",8805]], PARAMETER["False easting",500000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",0, LENGTHUNIT["metre",1], ID["EPSG",8807]]], CS[Cartesian,2], AXIS["(E)",east, ORDER[1], LENGTHUNIT["metre",1]], AXIS["(N)",north, ORDER[2], LENGTHUNIT["metre",1]], ID["EPSG",3344]]], METHOD["Affine parametric transformation", ID["EPSG",9624]], PARAMETER["A0",-409.264, LENGTHUNIT["metre",1], ID["EPSG",8623]], PARAMETER["A1",1.00017432259949, SCALEUNIT["coefficient",1], ID["EPSG",8624]], PARAMETER["A2",9.14562824E-05, SCALEUNIT["coefficient",1], ID["EPSG",8625]], PARAMETER["B0",-88.803, LENGTHUNIT["metre",1], ID["EPSG",8639]], PARAMETER["B1",-9.14562824E-05, SCALEUNIT["coefficient",1], ID["EPSG",8640]], PARAMETER["B2",1.00017432259949, SCALEUNIT["coefficient",1], ID["EPSG",8641]], OPERATIONACCURACY[40.0], USAGE[ SCOPE["Minerals management (including oil and gas exploration and production)."], AREA["Mauritania - between 12°W and 6°W."], BBOX[14.75,-12,27.3,-6]], ID["EPSG",15858], REMARK["Parameter values consistent with the OGP Affine parametric transformation method derived by OGP from the published Helmert 2D parameter values. May be used for transformations to WGS 84 - see tfm code 15862."]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "Transformation", "name": "IGN Astro 1960 / UTM zone 29N to Mauritania 1999 / UTM zone 29N (1)", "source_crs": { "type": "ProjectedCRS", "name": "IGN Astro 1960 / UTM zone 29N", "base_crs": { "type": "GeographicCRS", "name": "IGN Astro 1960", "datum": { "type": "GeodeticReferenceFrame", "name": "IGN Astro 1960", "ellipsoid": { "name": "Clarke 1880 (RGS)", "semi_major_axis": 6378249.145, "inverse_flattening": 293.465 } }, "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": 4700 }, "remarks": "Mining title descriptions referring only to \"Clarke 1880 ellipsoid\" should be assumed to be referenced to this CRS. Oil industry considers Mining Cadastre 1999 to be exactly defined through tfm codes 15857-9. Replaced by Mauritania 1999 (code 4702)." }, "conversion": { "name": "UTM zone 29N", "method": { "name": "Transverse Mercator", "id": { "authority": "EPSG", "code": 9807 } }, "parameters": [ { "name": "Latitude of natural origin", "value": 0, "unit": "degree", "id": { "authority": "EPSG", "code": 8801 } }, { "name": "Longitude of natural origin", "value": -9, "unit": "degree", "id": { "authority": "EPSG", "code": 8802 } }, { "name": "Scale factor at natural origin", "value": 0.9996, "unit": "unity", "id": { "authority": "EPSG", "code": 8805 } }, { "name": "False easting", "value": 500000, "unit": "metre", "id": { "authority": "EPSG", "code": 8806 } }, { "name": "False northing", "value": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8807 } } ] }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Easting", "abbreviation": "E", "direction": "east", "unit": "metre" }, { "name": "Northing", "abbreviation": "N", "direction": "north", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 3368 } }, "target_crs": { "type": "ProjectedCRS", "name": "Mauritania 1999 / UTM zone 29N", "base_crs": { "type": "GeographicCRS", "name": "Mauritania 1999", "datum": { "type": "GeodeticReferenceFrame", "name": "Mauritania 1999", "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": 4702 }, "remarks": "Replaces all earlier CRSs." }, "conversion": { "name": "UTM zone 29N", "method": { "name": "Transverse Mercator", "id": { "authority": "EPSG", "code": 9807 } }, "parameters": [ { "name": "Latitude of natural origin", "value": 0, "unit": "degree", "id": { "authority": "EPSG", "code": 8801 } }, { "name": "Longitude of natural origin", "value": -9, "unit": "degree", "id": { "authority": "EPSG", "code": 8802 } }, { "name": "Scale factor at natural origin", "value": 0.9996, "unit": "unity", "id": { "authority": "EPSG", "code": 8805 } }, { "name": "False easting", "value": 500000, "unit": "metre", "id": { "authority": "EPSG", "code": 8806 } }, { "name": "False northing", "value": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8807 } } ] }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Easting", "abbreviation": "E", "direction": "east", "unit": "metre" }, { "name": "Northing", "abbreviation": "N", "direction": "north", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 3344 } }, "method": { "name": "Affine parametric transformation", "id": { "authority": "EPSG", "code": 9624 } }, "parameters": [ { "name": "A0", "value": -409.264, "unit": "metre", "id": { "authority": "EPSG", "code": 8623 } }, { "name": "A1", "value": 1.00017432259949, "unit": { "type": "ScaleUnit", "name": "coefficient", "conversion_factor": 1 }, "id": { "authority": "EPSG", "code": 8624 } }, { "name": "A2", "value": 9.14562824e-05, "unit": { "type": "ScaleUnit", "name": "coefficient", "conversion_factor": 1 }, "id": { "authority": "EPSG", "code": 8625 } }, { "name": "B0", "value": -88.803, "unit": "metre", "id": { "authority": "EPSG", "code": 8639 } }, { "name": "B1", "value": -9.14562824e-05, "unit": { "type": "ScaleUnit", "name": "coefficient", "conversion_factor": 1 }, "id": { "authority": "EPSG", "code": 8640 } }, { "name": "B2", "value": 1.00017432259949, "unit": { "type": "ScaleUnit", "name": "coefficient", "conversion_factor": 1 }, "id": { "authority": "EPSG", "code": 8641 } } ], "accuracy": "40.0", "scope": "Minerals management (including oil and gas exploration and production).", "area": "Mauritania - between 12°W and 6°W.", "bbox": { "south_latitude": 14.75, "west_longitude": -12, "north_latitude": 27.3, "east_longitude": -6 }, "id": { "authority": "EPSG", "code": 15858 }, "remarks": "Parameter values consistent with the OGP Affine parametric transformation method derived by OGP from the published Helmert 2D parameter values. May be used for transformations to WGS 84 - see tfm code 15862." }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=affine +xoff=-409.264 +s11=1.00017432259949 +s12=9.14562824e-05 +yoff=-88.803 +s21=-9.14562824e-05 +s22=1.00017432259949"> <Layer srs="+proj=affine +xoff=-409.264 +s11=1.00017432259949 +s12=9.14562824e-05 +yoff=-88.803 +s21=-9.14562824e-05 +s22=1.00017432259949"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 15858, 'EPSG', 15858, '+proj=affine +xoff=-409.264 +s11=1.00017432259949 +s12=9.14562824e-05 +yoff=-88.803 +s21=-9.14562824e-05 +s22=1.00017432259949', 'None');
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