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Method: NTv2
Grid Files: SIRGAS1995-to-SIRGAS2000.gsb
Remarks: Derived at 48 stations.
Information source: SIRGAS Working Group I, "Relación y modelos de transformación entre las soluciones SIRGAS95, SIRGAS2000 y SIR17P01. Resultados obtenidos", presented at SIMPOSIO SIRGAS 2021 Perú, 29 Nov-01 Dec 2021.
Revision date: 2022-04-08
Unit: metre
Geodetic CRS: SIRGAS 1995
Datum: Sistema de Referencia Geocentrico para America del Sur 1995
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Revision date: 2004-04-22
Scope: Engineering survey, topographic mapping.
Remarks: Replaced by SIRGAS 2000 system.
Area of use: South America between 66°W and 60°W, southern hemisphere, onshore and offshore.
Coordinate system: Cartesian 2D CS. Axes: easting, northing (E,N). Orientations: east, north. UoM: m.
Definition: OGC Well Known Text 2 (2019)
BOUNDCRS[ SOURCECRS[ PROJCRS["SIRGAS 1995 / UTM zone 20S", BASEGEOGCRS["SIRGAS 1995", DATUM["Sistema de Referencia Geocentrico para America del Sur 1995", ELLIPSOID["GRS 1980",6378137,298.257222101, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4170]], CONVERSION["UTM zone 20S", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",-63, 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",10000000, 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]], USAGE[ SCOPE["Engineering survey, topographic mapping."], AREA["South America between 66°W and 60°W, southern hemisphere, onshore and offshore."], BBOX[-58.39,-66,0,-60]], ID["EPSG",31995]]], TARGETCRS[ GEOGCRS["SIRGAS 2000", DATUM["Sistema de Referencia Geocentrico para las AmericaS 2000", 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["Latin America - Central America and South America - onshore and offshore. Brazil - onshore and offshore."], BBOX[-59.87,-122.19,32.72,-25.28]], ID["EPSG",4674]]], ABRIDGEDTRANSFORMATION["SIRGAS 1995 to SIRGAS 2000 (1)", METHOD["NTv2", ID["EPSG",9615]], PARAMETERFILE["Latitude and longitude difference file","SIRGAS1995-to-SIRGAS2000.gsb"], USAGE[ SCOPE["Transformation of coordinates at 0.006m level of accuracy."], AREA["South America - onshore and offshore. Ecuador (mainland and Galapagos) - onshore and offshore."], BBOX[-59.87,-113.21,16.75,-26]], ID["EPSG",9979], REMARK["Derived at 48 stations."]]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "BoundCRS", "source_crs": { "type": "ProjectedCRS", "name": "SIRGAS 1995 / UTM zone 20S", "base_crs": { "name": "SIRGAS 1995", "datum": { "type": "GeodeticReferenceFrame", "name": "Sistema de Referencia Geocentrico para America del Sur 1995", "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": 4170 } }, "conversion": { "name": "UTM zone 20S", "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": -63, "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": 10000000, "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": 31995 } }, "target_crs": { "type": "GeographicCRS", "name": "SIRGAS 2000", "datum": { "type": "GeodeticReferenceFrame", "name": "Sistema de Referencia Geocentrico para las AmericaS 2000", "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": 4674 } }, "transformation": { "name": "SIRGAS 1995 to SIRGAS 2000 (1)", "method": { "name": "NTv2", "id": { "authority": "EPSG", "code": 9615 } }, "parameters": [ { "name": "Latitude and longitude difference file", "value": "SIRGAS1995-to-SIRGAS2000.gsb", "id": { "authority": "EPSG", "code": 8656 } } ], "id": { "authority": "EPSG", "code": 9979 } } }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=utm +zone=20 +south +ellps=GRS80 +units=m +no_defs +type=crs"> <Layer srs="+proj=utm +zone=20 +south +ellps=GRS80 +units=m +no_defs +type=crs"> </Layer> </Map>
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