EPSG:21331

GSK-2011 / GSK 3GK CM 93E

Transform Get position on a map

Available transformations
to EPSG:4326
No other targets exist for this CRS

  • Russian Federation - onshore and offshore. , accuracy 1.0 m, code 9773 (default) [3]

Selected transformation

Method: Geocentric translations (geog2D domain)

Remarks: For many purposes GSK-2011 can be considered to be coincident with WGS 84. This approximation ignores the low accuracy of the WGS 84 ensemble and the application of tectonic plate motion to WGS 84 data.

Information source: IOGP

Revision date: 2021-09-08

Attributes

Unit: metre

Geodetic CRS: GSK-2011

Datum: Geodezicheskaya Sistema Koordinat 2011

Ellipsoid: GSK-2011

Prime meridian: Greenwich

Data source: EPSG

Information source: Ministry of Economic Development of the Russian Federation, order N271 of 6th June 2017 as amended 11th December 2017.

Revision date: 2021-07-06

Scope: Cadastre, engineering survey, topographic mapping (large scale).

Remarks: Truncated form of GSK-2011 / GSK 3GK zone 31 (code 21231). Replaces Pulkovo-based CRSs from 2021-01-01.

Area of use: Russian Federation - onshore between 91°30'E and 94°30'E.

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

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SimpleMap

Center coordinates
863943.47 6993220.32

Projected bounds:
-5789479.14 4421551.19
6720760.58 11057608.84

WGS84 bounds:
18.92 39.87
-168.97 85.19

Russian Federation - onshore and offshore.
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Definition: OGC Well Known Text

PROJCS["GSK-2011 / GSK 3GK CM 93E",
    GEOGCS["GSK-2011",
        DATUM["Geodezicheskaya_Sistema_Koordinat_2011",
            SPHEROID["GSK-2011",6378136.5,298.2564151],
            TOWGS84[0,0,0,0,0,0,0]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","7683"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",93],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",250000],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","21331"]]

Definition: OGC Well Known Text 2 (2019)

PROJCRS["GSK-2011 / GSK 3GK CM 93E",
    BASEGEOGCRS["GSK-2011",
        DATUM["Geodezicheskaya Sistema Koordinat 2011",
            ELLIPSOID["GSK-2011",6378136.5,298.2564151,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",7683]],
    CONVERSION["GSK 3-degree Gauss-Kruger CM 93E",
        METHOD["Transverse Mercator",
            ID["EPSG",9807]],
        PARAMETER["Latitude of natural origin",0,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",93,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",1,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        PARAMETER["False easting",250000,
            LENGTHUNIT["metre",1],
            ID["EPSG",8806]],
        PARAMETER["False northing",0,
            LENGTHUNIT["metre",1],
            ID["EPSG",8807]]],
    CS[Cartesian,2],
        AXIS["northing (X)",north,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["easting (Y)",east,
            ORDER[2],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Cadastre, engineering survey, topographic mapping (large scale)."],
        AREA["Russian Federation - onshore between 91°30'E and 94°30'E."],
        BBOX[50.16,91.5,81.26,94.5]],
    ID["EPSG",21331]]

Definition: ESRI Well Known Text

PROJCS["GSK-2011_GSK_3GK_CM_93E",
    GEOGCS["GCS_GSK-2011",
        DATUM["Geodezicheskaya_Sistema_Koordinat_2011",
            SPHEROID["GSK-2011",6378136.5,298.2564151]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["False_Easting",250000.0],
    PARAMETER["False_Northing",0.0],
    PARAMETER["Central_Meridian",93.0],
    PARAMETER["Scale_Factor",1.0],
    PARAMETER["Latitude_Of_Origin",0.0],
    UNIT["Meter",1.0]]

Definition: PROJ.4

+proj=tmerc +lat_0=0 +lon_0=93 +k=1 +x_0=250000 +y_0=0 +ellps=GSK2011 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:21331","+proj=tmerc +lat_0=0 +lon_0=93 +k=1 +x_0=250000 +y_0=0 +ellps=GSK2011 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "GSK-2011 / GSK 3GK CM 93E",
    "base_crs": {
        "name": "GSK-2011",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Geodezicheskaya Sistema Koordinat 2011",
            "ellipsoid": {
                "name": "GSK-2011",
                "semi_major_axis": 6378136.5,
                "inverse_flattening": 298.2564151
            }
        },
        "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": 7683
        }
    },
    "conversion": {
        "name": "GSK 3-degree Gauss-Kruger CM 93E",
        "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": 93,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8802
                }
            },
            {
                "name": "Scale factor at natural origin",
                "value": 1,
                "unit": "unity",
                "id": {
                    "authority": "EPSG",
                    "code": 8805
                }
            },
            {
                "name": "False easting",
                "value": 250000,
                "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": "Northing",
                "abbreviation": "X",
                "direction": "north",
                "unit": "metre"
            },
            {
                "name": "Easting",
                "abbreviation": "Y",
                "direction": "east",
                "unit": "metre"
            }
        ]
    },
    "scope": "Cadastre, engineering survey, topographic mapping (large scale).",
    "area": "Russian Federation - onshore between 91°30'E and 94°30'E.",
    "bbox": {
        "south_latitude": 50.16,
        "west_longitude": 91.5,
        "north_latitude": 81.26,
        "east_longitude": 94.5
    },
    "id": {
        "authority": "EPSG",
        "code": 21331
    }
}

Definition: GeoServer

21331=PROJCS["GSK-2011 / GSK 3GK CM 93E",GEOGCS["GSK-2011",DATUM["Geodezicheskaya_Sistema_Koordinat_2011",SPHEROID["GSK-2011",6378136.5,298.2564151],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","7683"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",93],PARAMETER["scale_factor",1],PARAMETER["false_easting",250000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","21331"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=0"
	"lon_0=93"
	"k=1"
	"x_0=250000"
	"y_0=0"
	"ellps=GSK2011"
	"towgs84=0,0,0,0,0,0,0"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=tmerc +lat_0=0 +lon_0=93 +k=1 +x_0=250000 +y_0=0 +ellps=GSK2011 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs">
	<Layer srs="+proj=tmerc +lat_0=0 +lon_0=93 +k=1 +x_0=250000 +y_0=0 +ellps=GSK2011 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 21331, 'EPSG', 21331, '+proj=tmerc +lat_0=0 +lon_0=93 +k=1 +x_0=250000 +y_0=0 +ellps=GSK2011 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["GSK-2011 / GSK 3GK CM 93E",GEOGCS["GSK-2011",DATUM["Geodezicheskaya_Sistema_Koordinat_2011",SPHEROID["GSK-2011",6378136.5,298.2564151],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","7683"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",93],PARAMETER["scale_factor",1],PARAMETER["false_easting",250000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","21331"]]');