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Method: NTv2
Grid Files: SIRGAS2000-to-SIRGAS-CONSIR17P01.gsb
Remarks: Derived at 79 stations at epoch 2015.00. Accuracy deteriorates with time due to intra-plate seismic deformation.
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 2000
Datum: Sistema de Referencia Geocentrico para las AmericaS 2000
Ellipsoid: GRS 1980
Prime meridian: Greenwich
Data source: EPSG
Information source: OGP
Revision date: 2006-07-21
Scope: Engineering survey, topographic mapping.
Remarks: Replaces SIRGAS 1995 system.
Area of use: South America between 60°W and 54°W, north of approximately 2°N, onshore and offshore.
Coordinate system: Cartesian 2D CS. Axes: easting, northing (E,N). Orientations: east, north. UoM: m.
&stroke=red&width=2&path=-59.87,-122.19|32.72,-122.19|32.72,-25.28|-59.87,-25.28|-59.87,-122.19)
Center coordinates
-1333959.41 -1564937.64
Projected bounds:
-9189900.55 -8471407.58
4226019.46 6314532.87
WGS84 bounds:
-122.19 -59.87
-25.28 32.72
Definition: OGC Well Known Text 2 (2019)
BOUNDCRS[ SOURCECRS[ PROJCRS["SIRGAS 2000 / UTM zone 21N", BASEGEOGCRS["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]], ID["EPSG",4674]], CONVERSION["UTM zone 21N", METHOD["Transverse Mercator", ID["EPSG",9807]], PARAMETER["Latitude of natural origin",0, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",-57, 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]], USAGE[ SCOPE["Engineering survey, topographic mapping."], AREA["South America between 60°W and 54°W, north of approximately 2°N, onshore and offshore."], BBOX[1.18,-60,12.19,-54]], ID["EPSG",31975]]], TARGETCRS[ GEOGCRS["SIRGAS-CON SIR17P01", DYNAMIC[ FRAMEEPOCH[2015]], DATUM["SIRGAS Continuously Operating Network SIR17P01", 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["Geodesy."], AREA["Latin America - Central America and South America, onshore and offshore."], BBOX[-59.87,-122.19,32.72,-25.28]], ID["EPSG",8987]]], ABRIDGEDTRANSFORMATION["SIRGAS 2000 to SIRGAS-CON SIR17P01 (1)", METHOD["NTv2", ID["EPSG",9615]], PARAMETERFILE["Latitude and longitude difference file","SIRGAS2000-to-SIRGAS-CONSIR17P01.gsb"], USAGE[ SCOPE["Transformation of coordinates at 0.02m level of accuracy."], AREA["Latin America - Central America and South America, onshore and offshore."], BBOX[-59.87,-122.19,32.72,-25.28]], ID["EPSG",9980], REMARK["Derived at 79 stations at epoch 2015.00. Accuracy deteriorates with time due to intra-plate seismic deformation."]]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "BoundCRS", "source_crs": { "type": "ProjectedCRS", "name": "SIRGAS 2000 / UTM zone 21N", "base_crs": { "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 } }, "conversion": { "name": "UTM zone 21N", "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": -57, "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": 31975 } }, "target_crs": { "type": "GeographicCRS", "name": "SIRGAS-CON SIR17P01", "datum": { "type": "DynamicGeodeticReferenceFrame", "name": "SIRGAS Continuously Operating Network SIR17P01", "frame_reference_epoch": 2015, "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": 8987 } }, "transformation": { "name": "SIRGAS 2000 to SIRGAS-CON SIR17P01 (1)", "method": { "name": "NTv2", "id": { "authority": "EPSG", "code": 9615 } }, "parameters": [ { "name": "Latitude and longitude difference file", "value": "SIRGAS2000-to-SIRGAS-CONSIR17P01.gsb", "id": { "authority": "EPSG", "code": 8656 } } ], "id": { "authority": "EPSG", "code": 9980 } } }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=utm +zone=21 +ellps=GRS80 +units=m +no_defs +type=crs"> <Layer srs="+proj=utm +zone=21 +ellps=GRS80 +units=m +no_defs +type=crs"> </Layer> </Map>
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