EPSG:20925

GSK-2011 / Gauss-Kruger zone 25

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 order N271 of 6th June 2017.

Revision date: 2021-06-08

Scope: Topographic mapping (medium scale).

Remarks: Effective from 2021-01-01. Also found with truncated false easting - see GSK-2011 / Gauss-Kruger CM 147E (code 21025).

Area of use: Russian Federation - onshore between 144°E and 150°E.

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

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Center coordinates
23458529.39 7645126.86

Projected bounds:
19031095.17 4419146.99
29300173.71 14061425.87

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 / Gauss-Kruger zone 25",
    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",147],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",25500000],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","20925"]]

Definition: OGC Well Known Text 2 (2019)

PROJCRS["GSK-2011 / Gauss-Kruger zone 25",
    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["6-degree Gauss-Kruger zone 25",
        METHOD["Transverse Mercator",
            ID["EPSG",9807]],
        PARAMETER["Latitude of natural origin",0,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",147,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",1,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        PARAMETER["False easting",25500000,
            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["Topographic mapping (medium scale)."],
        AREA["Russian Federation - onshore between 144°E and 150°E."],
        BBOX[43.6,144,76.82,150]],
    ID["EPSG",20925]]

Definition: ESRI Well Known Text

PROJCS["GSK-2011_Gauss-Kruger_zone_25",
    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["Gauss_Kruger"],
    PARAMETER["False_Easting",25500000.0],
    PARAMETER["False_Northing",0.0],
    PARAMETER["Central_Meridian",147.0],
    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=147 +k=1 +x_0=25500000 +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:20925","+proj=tmerc +lat_0=0 +lon_0=147 +k=1 +x_0=25500000 +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 / Gauss-Kruger zone 25",
    "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": "6-degree Gauss-Kruger zone 25",
        "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": 147,
                "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": 25500000,
                "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": "Topographic mapping (medium scale).",
    "area": "Russian Federation - onshore between 144°E and 150°E.",
    "bbox": {
        "south_latitude": 43.6,
        "west_longitude": 144,
        "north_latitude": 76.82,
        "east_longitude": 150
    },
    "id": {
        "authority": "EPSG",
        "code": 20925
    }
}

Definition: GeoServer

20925=PROJCS["GSK-2011 / Gauss-Kruger zone 25",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",147],PARAMETER["scale_factor",1],PARAMETER["false_easting",25500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","20925"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=0"
	"lon_0=147"
	"k=1"
	"x_0=25500000"
	"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=147 +k=1 +x_0=25500000 +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=147 +k=1 +x_0=25500000 +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 ( 20925, 'EPSG', 20925, '+proj=tmerc +lat_0=0 +lon_0=147 +k=1 +x_0=25500000 +y_0=0 +ellps=GSK2011 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["GSK-2011 / Gauss-Kruger zone 25",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",147],PARAMETER["scale_factor",1],PARAMETER["false_easting",25500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","20925"]]');