EPSG:3023

RT90 2.5 gon O

Transform Get position on a map

Available transformations
to EPSG:4326
EPSG:4326 - WGS 84

Selected transformation

Method: Coordinate Frame rotation (geog2D domain)

Remarks: Parameter values from RT90 to SWEREF99 (1) (code 1895) assuming that SWEREF99 is equivalent to WGS 84 within the accuracy of the transformation. Replaces RT90 to WGS 84 (1) (code 1680).

Information source: OGP

Revision date: 2020-03-14

Attributes

Unit: metre

Geodetic CRS: RT90

Datum: Rikets koordinatsystem 1990

Ellipsoid: Bessel 1841

Prime meridian: Greenwich

Data source: EPSG

Information source: Lantmateriverket (National Land Survey of Sweden). http://www.lantmateriet.se

Revision date: 2005-05-21

Scope: Cadastre, engineering survey, topographic mapping.

Remarks: Replaces RT38 2.5 gon O (CRS code 3029) from 1990. From 2003 replaced by SWEREF systems (CRS codes 3007-3018).

Area of use: Sweden - communes between approximately 19°10'E and 21°25'E. See information source for map.

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

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SimpleMap

Center coordinates
1332228.25 6882117.2

Projected bounds:
843038.59 6092138.49
1747539.05 7698910.13

WGS84 bounds:
10.03 54.96
24.17 69.07

Sweden - onshore and offshore.
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Definition: OGC Well Known Text

PROJCS["RT90 2.5 gon O",
    GEOGCS["RT90",
        DATUM["Rikets_koordinatsystem_1990",
            SPHEROID["Bessel 1841",6377397.155,299.1528128],
            TOWGS84[414.1,41.3,603.1,-0.855,2.141,-7.023,0]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4124"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",20.3082777777778],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",1500000],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","3023"]]

Definition: OGC Well Known Text 2 (2019)

PROJCRS["RT90 2.5 gon O",
    BASEGEOGCRS["RT90",
        DATUM["Rikets koordinatsystem 1990",
            ELLIPSOID["Bessel 1841",6377397.155,299.1528128,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",4124]],
    CONVERSION["Sweden zone 2.5 gon O",
        METHOD["Transverse Mercator",
            ID["EPSG",9807]],
        PARAMETER["Latitude of natural origin",0,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",20.3082777777778,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",1,
            SCALEUNIT["unity",1],
            ID["EPSG",8805]],
        PARAMETER["False easting",1500000,
            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."],
        AREA["Sweden - communes between approximately 19°10'E and 21°25'E. See information source for map."],
        BBOX[63.37,18.4,69.07,22.2]],
    ID["EPSG",3023]]

Definition: ESRI Well Known Text

PROJCS["RT90_25_gon_O",
    GEOGCS["GCS_RT_1990",
        DATUM["D_RT_1990",
            SPHEROID["Bessel_1841",6377397.155,299.1528128]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["False_Easting",1500000.0],
    PARAMETER["False_Northing",0.0],
    PARAMETER["Central_Meridian",20.3082777777778],
    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=20.3082777777778 +k=1 +x_0=1500000 +y_0=0 +ellps=bessel +towgs84=414.1,41.3,603.1,-0.855,2.141,-7.023,0 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:3023","+proj=tmerc +lat_0=0 +lon_0=20.3082777777778 +k=1 +x_0=1500000 +y_0=0 +ellps=bessel +towgs84=414.1,41.3,603.1,-0.855,2.141,-7.023,0 +units=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "RT90 2.5 gon O",
    "base_crs": {
        "name": "RT90",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Rikets koordinatsystem 1990",
            "ellipsoid": {
                "name": "Bessel 1841",
                "semi_major_axis": 6377397.155,
                "inverse_flattening": 299.1528128
            }
        },
        "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": 4124
        }
    },
    "conversion": {
        "name": "Sweden zone 2.5 gon O",
        "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": 20.3082777777778,
                "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": 1500000,
                "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.",
    "area": "Sweden - communes between approximately 19°10'E and 21°25'E. See information source for map.",
    "bbox": {
        "south_latitude": 63.37,
        "west_longitude": 18.4,
        "north_latitude": 69.07,
        "east_longitude": 22.2
    },
    "id": {
        "authority": "EPSG",
        "code": 3023
    }
}

Definition: GeoServer

3023=PROJCS["RT90 2.5 gon O",GEOGCS["RT90",DATUM["Rikets_koordinatsystem_1990",SPHEROID["Bessel 1841",6377397.155,299.1528128],TOWGS84[414.1,41.3,603.1,-0.855,2.141,-7.023,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4124"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",20.3082777777778],PARAMETER["scale_factor",1],PARAMETER["false_easting",1500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","3023"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=0"
	"lon_0=20.3082777777778"
	"k=1"
	"x_0=1500000"
	"y_0=0"
	"ellps=bessel"
	"towgs84=414.1,41.3,603.1,-0.855,2.141,-7.023,0"
	"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=20.3082777777778 +k=1 +x_0=1500000 +y_0=0 +ellps=bessel +towgs84=414.1,41.3,603.1,-0.855,2.141,-7.023,0 +units=m +no_defs +type=crs">
	<Layer srs="+proj=tmerc +lat_0=0 +lon_0=20.3082777777778 +k=1 +x_0=1500000 +y_0=0 +ellps=bessel +towgs84=414.1,41.3,603.1,-0.855,2.141,-7.023,0 +units=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 3023, 'EPSG', 3023, '+proj=tmerc +lat_0=0 +lon_0=20.3082777777778 +k=1 +x_0=1500000 +y_0=0 +ellps=bessel +towgs84=414.1,41.3,603.1,-0.855,2.141,-7.023,0 +units=m +no_defs +type=crs', 'PROJCS["RT90 2.5 gon O",GEOGCS["RT90",DATUM["Rikets_koordinatsystem_1990",SPHEROID["Bessel 1841",6377397.155,299.1528128],TOWGS84[414.1,41.3,603.1,-0.855,2.141,-7.023,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4124"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",20.3082777777778],PARAMETER["scale_factor",1],PARAMETER["false_easting",1500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","3023"]]');