EPSG:29101 — SAD69 / Brazil Polyconic

Projected · Brazil

Export Formats

OGC WKT

PROJCS[
    "SAD69 / Brazil Polyconic",
    GEOGCS[
        "SAD69",
        DATUM[
            "South_American_Datum_1969",
            SPHEROID["GRS 1967 Modified",6378160,298.25],
            TOWGS84[-57,1,-41,0,0,0,0]
        ],
        PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4618"]
    ],
    PROJECTION["Polyconic"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",-54],
    PARAMETER["false_easting",5000000],
    PARAMETER["false_northing",10000000],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","29101"]
]

WKT2

PROJCRS[
    "SAD69 / Brazil Polyconic",
    BASEGEOGCRS[
        "SAD69",
        DATUM[
            "South American Datum 1969",
            ELLIPSOID[
                "GRS 1967 Modified",
                6378160,
                298.25,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7050]
            ],
            ID["EPSG",6618]
        ],
        ID["EPSG",4618]
    ],
    CONVERSION[
        "Brazil Polyconic",
        METHOD["American Polyconic",ID["EPSG",9818]],
        PARAMETER[
            "Latitude of natural origin",
            0,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8801]
        ],
        PARAMETER[
            "Longitude of natural origin",
            -54,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8802]
        ],
        PARAMETER[
            "False easting",
            5000000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            10000000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",19941]
    ],
    CS[Cartesian,2,ID["EPSG",4499]],
    AXIS["Easting (X)",east],
    AXIS["Northing (Y)",north],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",29101]
]

PROJ.4

+proj=poly +lat_0=0 +lon_0=-54 +x_0=5000000 +y_0=10000000 +ellps=aust_SA +towgs84=-57,1,-41,0,0,0,0 +units=m +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:29101", "+proj=poly +lat_0=0 +lon_0=-54 +x_0=5000000 +y_0=10000000 +ellps=aust_SA +towgs84=-57,1,-41,0,0,0,0 +units=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 29101,
  "name": "SAD69 / Brazil Polyconic",
  "kind": "projected",
  "area": "Brazil",
  "unit": "metre",
  "bbox": [
    -35.71,
    -74.01,
    7.04,
    -25.28
  ],
  "proj4": "+proj=poly +lat_0=0 +lon_0=-54 +x_0=5000000 +y_0=10000000 +ellps=aust_SA +towgs84=-57,1,-41,0,0,0,0 +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 (29101, 'EPSG', 29101, '+proj=poly +lat_0=0 +lon_0=-54 +x_0=5000000 +y_0=10000000 +ellps=aust_SA +towgs84=-57,1,-41,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["SAD69 / Brazil Polyconic",GEOGCS["SAD69",DATUM["South_American_Datum_1969",SPHEROID["GRS 1967 Modified",6378160,298.25],TOWGS84[-57,1,-41,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4618"]],PROJECTION["Polyconic"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-54],PARAMETER["false_easting",5000000],PARAMETER["false_northing",10000000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","29101"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=poly"
  "+lat_0=0"
  "+lon_0=-54"
  "+x_0=5000000"
  "+y_0=10000000"
  "+ellps=aust_SA"
  "+towgs84=-57,1,-41,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

29101=PROJCS["SAD69 / Brazil Polyconic",GEOGCS["SAD69",DATUM["South_American_Datum_1969",SPHEROID["GRS 1967 Modified",6378160,298.25],TOWGS84[-57,1,-41,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4618"]],PROJECTION["Polyconic"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-54],PARAMETER["false_easting",5000000],PARAMETER["false_northing",10000000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","29101"]]

Related Coordinate Systems

Available Transformations (33)

Transformations inherited from base CRS: EPSG:4618 (SAD69)

Transformation	Source → Target	Accuracy (m)
SAD69 to SIRGAS 2000 (2)	4618 → 4674	1
SAD69 to WGS 84 (15)	4618 → 4326	2
SAD69 to WGS 84 (17)	4618 → 4326	4
SAD69 to WGS 84 (18)	4618 → 4326	4
Corrego Alegre 1970-72 to SAD69 (1)	4225 → 4618	5
SAD69 to WGS 84 (14)	4618 → 4326	5
SAD69 to WGS 84 (16)	4618 → 4326	5
SAD69 to SIRGAS-Chile 2002 (2)	4618 → 5360	5
SAD69 to SIRGAS-Chile 2002 (4)	4618 → 5360	5
SAD69 to SIRGAS-Chile 2002 (1)	4618 → 5360	5

Other CRS for BR

Other CRS using South American Datum 1969 (16)

Frequently Asked Questions

How do I add EPSG:29101 to GeoServer?

Add the following definition to your GeoServer configuration:

29101=PROJCS["SAD69 / Brazil Polyconic",GEOGCS["SAD69",DATUM["South_American_Datum_1969",SPHEROID["GRS 1967 Modified",6378160,298.25],TOWGS84[-57,1,-41,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4618"]],PROJECTION["Polyconic"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-54],PARAMETER["false_easting",5000000],PARAMETER["false_northing",10000000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","29101"]]

Read the full GeoServer guide →

How do I add EPSG:29101 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (29101, 'EPSG', 29101, '+proj=poly +lat_0=0 +lon_0=-54 +x_0=5000000 +y_0=10000000 +ellps=aust_SA +towgs84=-57,1,-41,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["SAD69 / Brazil Polyconic",GEOGCS["SAD69",DATUM["South_American_Datum_1969",SPHEROID["GRS 1967 Modified",6378160,298.25],TOWGS84[-57,1,-41,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4618"]],PROJECTION["Polyconic"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",-54],PARAMETER["false_easting",5000000],PARAMETER["false_northing",10000000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","29101"]]');

Read the full PostGIS guide →

How do I add EPSG:29101 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=poly"
  "+lat_0=0"
  "+lon_0=-54"
  "+x_0=5000000"
  "+y_0=10000000"
  "+ellps=aust_SA"
  "+towgs84=-57,1,-41,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:29101 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:29101", "+proj=poly +lat_0=0 +lon_0=-54 +x_0=5000000 +y_0=10000000 +ellps=aust_SA +towgs84=-57,1,-41,0,0,0,0 +units=m +no_defs +type=crs");

Read the full Proj4js guide →

Type

Projected

Unit

metre

Geodetic CRS

SAD69

Datum

South American Datum 1969

Ellipsoid

GRS 1967 Modified

Prime Meridian

Greenwich

Area of Use

Brazil

Brazil - onshore and offshore. Includes Rocas, Fernando de Noronha archipelago, Trindade, Ihlas Mart…

Coordinate System

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

Center Coordinates

5469816.16 8410211.80

Projected Bounds

10875966.52 3201794.758171188.72 5862755.23

WGS84 Bounds

7.04 -74.01-25.28 -35.71

Data Source

EPSG

Information Source

PetroBras

Revision Date

2012-11-26

Scope

Topographic mapping (small scale).

Remarks

Uses GRS 1967 ellipsoid with 1/f to exactly 2 decimal places. Replaced by SAD69(96) / Brazil Polyconic (CRS code 5530).

Country Code

EPSG

29101