EPSG:31971 — SIRGAS 2000 / UTM zone 17N

Projected · Latin America - 84°W to 78°West; N hemisphere and SIRGAS by country

Export Formats

OGC WKT

PROJCS[
    "SIRGAS 2000 / UTM zone 17N",
    GEOGCS[
        "SIRGAS 2000",
        DATUM[
            "Sistema_de_Referencia_Geocentrico_para_las_AmericaS_2000",
            SPHEROID["GRS 1980",6378137,298.257222101],
            TOWGS84[0,0,0,0,0,0,0]
        ],
        PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4674"]
    ],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",-81],
    PARAMETER["scale_factor",0.9996],
    PARAMETER["false_easting",500000],
    PARAMETER["false_northing",0],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","31971"]
]

WKT2

PROJCRS[
    "SIRGAS 2000 / UTM zone 17N",
    BASEGEOGCRS[
        "SIRGAS 2000",
        DATUM[
            "Sistema de Referencia Geocentrico para las AmericaS 2000",
            ELLIPSOID[
                "GRS 1980",
                6378137,
                298.257222101,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7019]
            ],
            ID["EPSG",6674]
        ],
        ID["EPSG",4674]
    ],
    CONVERSION[
        "UTM zone 17N",
        METHOD["Transverse Mercator",ID["EPSG",9807]],
        PARAMETER[
            "Latitude of natural origin",
            0,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8801]
        ],
        PARAMETER[
            "Longitude of natural origin",
            -81,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8802]
        ],
        PARAMETER[
            "Scale factor at natural origin",
            0.9996,
            SCALEUNIT["unity",1,ID["EPSG",9201]],
            ID["EPSG",8805]
        ],
        PARAMETER[
            "False easting",
            500000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            0,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",16017]
    ],
    CS[Cartesian,2,ID["EPSG",4400]],
    AXIS["Easting (E)",east],
    AXIS["Northing (N)",north],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",31971]
]

PROJ.4

+proj=utm +zone=17 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:31971", "+proj=utm +zone=17 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 31971,
  "name": "SIRGAS 2000 / UTM zone 17N",
  "kind": "projected",
  "area": "Latin America - 84°W to 78°West; N hemisphere and SIRGAS by country",
  "unit": "metre",
  "bbox": [
    0,
    -84,
    19.54,
    -78
  ],
  "proj4": "+proj=utm +zone=17 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs"
}

PostGIS

How to add a projection to PostGIS? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (31971, 'EPSG', 31971, '+proj=utm +zone=17 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["SIRGAS 2000 / UTM zone 17N",GEOGCS["SIRGAS 2000",DATUM["Sistema_de_Referencia_Geocentrico_para_las_AmericaS_2000",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4674"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-81],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","31971"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=utm"
  "+zone=17"
  "+ellps=GRS80"
  "+towgs84=0,0,0,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

31971=PROJCS["SIRGAS 2000 / UTM zone 17N",GEOGCS["SIRGAS 2000",DATUM["Sistema_de_Referencia_Geocentrico_para_las_AmericaS_2000",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4674"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-81],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","31971"]]

Related Coordinate Systems

Available Transformations (22)

Transformations inherited from base CRS: EPSG:4674 (SIRGAS 2000)

Transformation	Source → Target	Accuracy (m)
SIRGAS 1995 to SIRGAS 2000 (1)	4170 → 4674	0.006
SIRGAS 2000 to SIRGAS-CON SIR17P01 (1)	4674 → 8987	0.02
POSGAR 2007 to SIRGAS 2000 (1)	5340 → 4674	0.1
Aratu to SIRGAS 2000 (1)	4208 → 4674	0.5
Aratu to SIRGAS 2000 (2)	4208 → 4674	0.5
Aratu to SIRGAS 2000 (3)	4208 → 4674	0.5
Aratu to SIRGAS 2000 (4)	4208 → 4674	0.5
Aratu to SIRGAS 2000 (5)	4208 → 4674	0.5
Aratu to SIRGAS 2000 (6)	4208 → 4674	0.5
Aratu to SIRGAS 2000 (7)	4208 → 4674	0.5

Other CRS using Sistema de Referencia Geocentrico para las AmericaS 2000 (31)

Frequently Asked Questions

How do I add EPSG:31971 to GeoServer?

Add the following definition to your GeoServer configuration:

31971=PROJCS["SIRGAS 2000 / UTM zone 17N",GEOGCS["SIRGAS 2000",DATUM["Sistema_de_Referencia_Geocentrico_para_las_AmericaS_2000",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4674"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-81],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","31971"]]

Read the full GeoServer guide →

How do I add EPSG:31971 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (31971, 'EPSG', 31971, '+proj=utm +zone=17 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["SIRGAS 2000 / UTM zone 17N",GEOGCS["SIRGAS 2000",DATUM["Sistema_de_Referencia_Geocentrico_para_las_AmericaS_2000",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4674"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-81],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","31971"]]');

Read the full PostGIS guide →

How do I add EPSG:31971 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=utm"
  "+zone=17"
  "+ellps=GRS80"
  "+towgs84=0,0,0,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:31971 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:31971", "+proj=utm +zone=17 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

Read the full Proj4js guide →

Type

Projected

Unit

metre

Geodetic CRS

SIRGAS 2000

Datum

Sistema de Referencia Geocentrico para las AmericaS 2000

Ellipsoid

GRS 1980

Prime Meridian

Greenwich

Area of Use

Latin America - 84°W to 78°West; N hemisphere and SIRGAS by country

Latin America - Central America and South America - between 84°W and 78°W, northern hemisphere, onsh…

Coordinate System

Cartesian 2D CS. Axes: easting, northing (E,N). Orientations: east, north. UoM: m.

Center Coordinates

500000.00 1079983.06

Projected Bounds

2163337.52 166021.44814829.62 0.00

WGS84 Bounds

19.54 -84.00-78.00 0.00

Data Source

EPSG

Information Source

OGP

Revision Date

2006-07-21

Scope

Engineering survey, topographic mapping.

Remarks

Replaces SIRGAS 1995 system.

EPSG

31971