EPSG:3911 DEPRECATED

MGI 1901 / Slovenia Grid

Available transformations
to EPSG:8685
EPSG:8685 - ETRS89-SRB [STRS00]

Selected transformation

Name: MGI 1901 to ETRS89-SRB [STRS00] (9)

Method: NTv2

Grid Files: MGI1901_TO_SRBETRS89_NTv2.gsb

Remarks:

Information source: Republic Geodetic Authority, Serbia; www.rgz.gov.rs

Revision date: 2025-11-12

Attributes

Unit: metre

Geodetic CRS: MGI 1901

Datum: MGI 1901

Ellipsoid: Bessel 1841

Prime meridian: Greenwich

Data source: EPSG

Revision date: 2012-01-21

Scope: Engineering survey, topographic mapping.

Remarks: Truncated form of MGI 1901 / Balkans zone 5 (CRS code 3907). Replaced by D48/GK (CRS code 3912) soon after Slovenian independence.

Area of use: Slovenia - onshore and offshore.

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

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SimpleMap

Center coordinates
972696.67 4913200.22

Projected bounds:
794457.01 4683265.07
1161758.8 5147497.18

WGS84 bounds:
18.81 42.23
23.01 46.19

Serbia including Vojvodina.
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Definition: OGC Well Known Text 2 (2019)

BOUNDCRS[
    SOURCECRS[
        PROJCRS["MGI 1901 / Slovenia Grid",
            BASEGEOGCRS["MGI 1901",
                DATUM["MGI 1901",
                    ELLIPSOID["Bessel 1841",6377397.155,299.1528128,
                        LENGTHUNIT["metre",1]]],
                PRIMEM["Greenwich",0,
                    ANGLEUNIT["degree",0.0174532925199433]],
                ID["EPSG",3906]],
            CONVERSION["Slovenia Grid",
                METHOD["Transverse Mercator",
                    ID["EPSG",9807]],
                PARAMETER["Latitude of natural origin",0,
                    ANGLEUNIT["degree",0.0174532925199433],
                    ID["EPSG",8801]],
                PARAMETER["Longitude of natural origin",15,
                    ANGLEUNIT["degree",0.0174532925199433],
                    ID["EPSG",8802]],
                PARAMETER["Scale factor at natural origin",0.9999,
                    SCALEUNIT["unity",1],
                    ID["EPSG",8805]],
                PARAMETER["False easting",500000,
                    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["Engineering survey, topographic mapping."],
                AREA["Slovenia - onshore and offshore."],
                BBOX[45.42,13.38,46.88,16.61]],
            ID["EPSG",3911]]],
    TARGETCRS[
        GEOGCRS["ETRS89-SRB [STRS00]",
            DATUM["Serbian Spatial Reference System 2000",
                ELLIPSOID["GRS 1980",6378137,298.257222101,
                    LENGTHUNIT["metre",1]],
                ANCHOREPOCH[2010.63]],
            PRIMEM["Greenwich",0,
                ANGLEUNIT["degree",0.0174532925199433]],
            CS[ellipsoidal,2],
                AXIS["geodetic latitude (Lat)",north,
                    ORDER[1],
                    ANGLEUNIT["degree",0.0174532925199433]],
                AXIS["geodetic longitude (Lon)",east,
                    ORDER[2],
                    ANGLEUNIT["degree",0.0174532925199433]],
            USAGE[
                SCOPE["Horizontal component of 3D system."],
                AREA["Serbia including Vojvodina."],
                BBOX[42.23,18.81,46.19,23.01]],
            ID["EPSG",8685],
            REMARK["In Serbia replaces MGI 1901 and SREF98 (CRS codes 3906 and 4075)."]]],
    ABRIDGEDTRANSFORMATION["MGI 1901 to ETRS89-SRB [STRS00] (9)",
        METHOD["NTv2",
            ID["EPSG",9615]],
        PARAMETERFILE["Latitude and longitude difference file","MGI1901_TO_SRBETRS89_NTv2.gsb"],
        USAGE[
            SCOPE["Geodesy, cadastre."],
            AREA["Serbia including Vojvodina."],
            BBOX[42.23,18.81,46.19,23.01]],
        ID["EPSG",9496]]]

Definition: PROJ.4

+proj=tmerc +lat_0=0 +lon_0=15 +k=0.9999 +x_0=500000 +y_0=0 +ellps=bessel +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:3911","+proj=tmerc +lat_0=0 +lon_0=15 +k=0.9999 +x_0=500000 +y_0=0 +ellps=bessel +units=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "BoundCRS",
    "source_crs": {
        "type": "ProjectedCRS",
        "name": "MGI 1901 / Slovenia Grid",
        "base_crs": {
            "type": "GeographicCRS",
            "name": "MGI 1901",
            "datum": {
                "type": "GeodeticReferenceFrame",
                "name": "MGI 1901",
                "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": 3906
            },
            "remarks": "Adopted in 1924 replacing MGI (Ferro) (CRS code 4805). Densified in 1948. In Slovenia replaced by D96 (CRS code 4765). In Croatia replaced by HTRS96 (CRS code 4761). In Serbia replaced by SREF98 and then by SRB_ETRS89 (STRS00) (CRS codes 4075 and 8691)."
        },
        "conversion": {
            "name": "Slovenia Grid",
            "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": 15,
                    "unit": "degree",
                    "id": {
                        "authority": "EPSG",
                        "code": 8802
                    }
                },
                {
                    "name": "Scale factor at natural origin",
                    "value": 0.9999,
                    "unit": "unity",
                    "id": {
                        "authority": "EPSG",
                        "code": 8805
                    }
                },
                {
                    "name": "False easting",
                    "value": 500000,
                    "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"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 3911
        }
    },
    "target_crs": {
        "type": "GeographicCRS",
        "name": "ETRS89-SRB [STRS00]",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Serbian Spatial Reference System 2000",
            "anchor_epoch": 2010.63,
            "ellipsoid": {
                "name": "GRS 1980",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257222101
            }
        },
        "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": 8685
        },
        "remarks": "In Serbia replaces MGI 1901 and SREF98 (CRS codes 3906 and 4075)."
    },
    "transformation": {
        "name": "MGI 1901 to ETRS89-SRB [STRS00] (9)",
        "method": {
            "name": "NTv2",
            "id": {
                "authority": "EPSG",
                "code": 9615
            }
        },
        "parameters": [
            {
                "name": "Latitude and longitude difference file",
                "value": "MGI1901_TO_SRBETRS89_NTv2.gsb",
                "id": {
                    "authority": "EPSG",
                    "code": 8656
                }
            }
        ],
        "id": {
            "authority": "EPSG",
            "code": 9496
        }
    }
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=tmerc"
	"lat_0=0"
	"lon_0=15"
	"k=0.9999"
	"x_0=500000"
	"y_0=0"
	"ellps=bessel"
	"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=15 +k=0.9999 +x_0=500000 +y_0=0 +ellps=bessel +units=m +no_defs +type=crs">
	<Layer srs="+proj=tmerc +lat_0=0 +lon_0=15 +k=0.9999 +x_0=500000 +y_0=0 +ellps=bessel +units=m +no_defs +type=crs">
	</Layer>
</Map>