EPSG:12193

GGRS87 / TM87 Kastellorizo

Transform Get position on a map

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

  • Greece - onshore. , accuracy 1.0 m, code 1272 (default) [3]

Selected transformation

Name: GGRS87 to WGS 84 (1)

Method: Geocentric translations (geog2D domain)

Remarks:

Information source: Geodesy Department; Public Petroleum Corporation of Greece.

Revision date: 2020-03-14

Attributes

Unit: metre

Geodetic CRS: GGRS87

Datum: Greek Geodetic Reference System 1987

Ellipsoid: GRS 1980

Prime meridian: Greenwich

Data source: EPSG

Information source: Ktimatologio S.A. (Hellenic Cadastre) Geodetic Department, "Coordinate Transformation Model between the HEPOS Reference System (HTRS07) and the Hellenic Geodetic Reference System (GGRS87)", October 2008. https://www.hepos.gr/

Revision date: 2026-07-21

Scope: Cadastre, engineering survey, topographic mapping.

Remarks: Oil industry uses ED50 / UTM zone 34N and ED50 / UTM zone 35N.

Area of use: Greece - onshore east of 28°51'E - Kastellorizo.

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

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SimpleMap

Center coordinates
292456.16 4235926.96

Projected bounds:
-180886.02 3845037.14
746086.67 4648497.81

WGS84 bounds:
19.57 34.75
29.69 41.75

Greece - onshore.
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Definition: OGC Well Known Text

PROJCS["GGRS87 / TM87 Kastellorizo",
    GEOGCS["GGRS87",
        DATUM["Greek_Geodetic_Reference_System_1987",
            SPHEROID["GRS 1980",6378137,298.257222101],
            TOWGS84[-199.87,74.79,246.62,0,0,0,0]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4121"]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",27],
    PARAMETER["scale_factor",0.9996],
    PARAMETER["false_easting",500000],
    PARAMETER["false_northing",0],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","12193"]]

Definition: OGC Well Known Text 2 (2019)

PROJCRS["GGRS87 / TM87 Kastellorizo",
    BASEGEOGCRS["GGRS87",
        DATUM["Greek Geodetic Reference System 1987",
            ELLIPSOID["GRS 1980",6378137,298.257222101,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",4121]],
    CONVERSION["Greek Transverse Mercator 87 Kastellorizo",
        METHOD["Transverse Mercator",
            ID["EPSG",9807]],
        PARAMETER["Latitude of natural origin",0,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8801]],
        PARAMETER["Longitude of natural origin",27,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8802]],
        PARAMETER["Scale factor at natural origin",0.9996,
            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["(E)",east,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["(N)",north,
            ORDER[2],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Cadastre, engineering survey, topographic mapping."],
        AREA["Greece - onshore east of 28°51'E - Kastellorizo."],
        BBOX[36.05,29.42,36.19,29.69]],
    ID["EPSG",12193]]

Definition: ESRI Well Known Text

PROJCS["GGRS87_TM87_Kastellorizo",
    GEOGCS["GCS_GGRS_1987",
        DATUM["D_GGRS_1987",
            SPHEROID["GRS_1980",6378137.0,298.257222101]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["False_Easting",500000.0],
    PARAMETER["False_Northing",0.0],
    PARAMETER["Central_Meridian",27.0],
    PARAMETER["Scale_Factor",0.9996],
    PARAMETER["Latitude_Of_Origin",0.0],
    UNIT["Meter",1.0]]

Definition: PROJ.4

+proj=utm +zone=35 +ellps=GRS80 +towgs84=-199.87,74.79,246.62,0,0,0,0 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:12193","+proj=utm +zone=35 +ellps=GRS80 +towgs84=-199.87,74.79,246.62,0,0,0,0 +units=m +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "GGRS87 / TM87 Kastellorizo",
    "base_crs": {
        "type": "GeographicCRS",
        "name": "GGRS87",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Greek Geodetic Reference System 1987",
            "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": 4121
        }
    },
    "conversion": {
        "name": "Greek Transverse Mercator 87 Kastellorizo",
        "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": 27,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8802
                }
            },
            {
                "name": "Scale factor at natural origin",
                "value": 0.9996,
                "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": "Easting",
                "abbreviation": "E",
                "direction": "east",
                "unit": "metre"
            },
            {
                "name": "Northing",
                "abbreviation": "N",
                "direction": "north",
                "unit": "metre"
            }
        ]
    },
    "scope": "Cadastre, engineering survey, topographic mapping.",
    "area": "Greece - onshore east of 28°51'E - Kastellorizo.",
    "bbox": {
        "south_latitude": 36.05,
        "west_longitude": 29.42,
        "north_latitude": 36.19,
        "east_longitude": 29.69
    },
    "id": {
        "authority": "EPSG",
        "code": 12193
    }
}

Definition: GeoServer

12193=PROJCS["GGRS87 / TM87 Kastellorizo",GEOGCS["GGRS87",DATUM["Greek_Geodetic_Reference_System_1987",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[-199.87,74.79,246.62,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4121"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",27],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","12193"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=utm"
	"zone=35"
	"ellps=GRS80"
	"towgs84=-199.87,74.79,246.62,0,0,0,0"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=utm +zone=35 +ellps=GRS80 +towgs84=-199.87,74.79,246.62,0,0,0,0 +units=m +no_defs +type=crs">
	<Layer srs="+proj=utm +zone=35 +ellps=GRS80 +towgs84=-199.87,74.79,246.62,0,0,0,0 +units=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 12193, 'EPSG', 12193, '+proj=utm +zone=35 +ellps=GRS80 +towgs84=-199.87,74.79,246.62,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["GGRS87 / TM87 Kastellorizo",GEOGCS["GGRS87",DATUM["Greek_Geodetic_Reference_System_1987",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[-199.87,74.79,246.62,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4121"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",27],PARAMETER["scale_factor",0.9996],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","12193"]]');