EPSG:3874 — ETRS89-FIN [EUREF-FIN] / GK20FIN

Projekte · Finland - 19.5°E to 20.5°E onshore nominal

Tanım Formatları

OGC WKT

PROJCS[
    "ETRS89 / GK20FIN",
    GEOGCS[
        "ETRS89",
        DATUM[
            "European_Terrestrial_Reference_System_1989",
            SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],
            TOWGS84[0,0,0,0,0,0,0],
            AUTHORITY["EPSG","6258"]
        ],
        PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4258"]
    ],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",0],
    PARAMETER["central_meridian",20],
    PARAMETER["scale_factor",1],
    PARAMETER["false_easting",20500000],
    PARAMETER["false_northing",0],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","3874"]
]

WKT2

PROJCRS[
    "ETRS89-FIN [EUREF-FIN] / GK20FIN",
    BASEGEOGCRS[
        "ETRS89-FIN [EUREF-FIN]",
        DATUM[
            "EUREF-FIN",
            ELLIPSOID[
                "GRS 1980",
                6378137,
                298.257222101,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7019]
            ],
            ANCHOREPOCH[1997],
            ID["EPSG",1391]
        ],
        ID["EPSG",10690]
    ],
    CONVERSION[
        "Finland Gauss-Kruger zone 20",
        METHOD["Transverse Mercator",ID["EPSG",9807]],
        PARAMETER[
            "Latitude of natural origin",
            0,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8801]
        ],
        PARAMETER[
            "Longitude of natural origin",
            20,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8802]
        ],
        PARAMETER[
            "Scale factor at natural origin",
            1,
            SCALEUNIT["unity",1,ID["EPSG",9201]],
            ID["EPSG",8805]
        ],
        PARAMETER[
            "False easting",
            20500000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            0,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",3861]
    ],
    CS[Cartesian,2,ID["EPSG",4500]],
    AXIS["Northing (N)",north],
    AXIS["Easting (E)",east],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",3874]
]

PROJ.4

+proj=tmerc +lat_0=0 +lon_0=20 +k=1 +x_0=20500000 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs

Proj4js

Proj4js'a nasıl projeksiyon eklerim? →

proj4.defs("EPSG:3874", "+proj=tmerc +lat_0=0 +lon_0=20 +k=1 +x_0=20500000 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 3874,
  "name": "ETRS89-FIN [EUREF-FIN] / GK20FIN",
  "kind": "projected",
  "area": "Finland - 19.5°E to 20.5°E onshore nominal",
  "unit": "metre",
  "bbox": [
    59.92,
    19.5,
    60.48,
    20.5
  ],
  "proj4": "+proj=tmerc +lat_0=0 +lon_0=20 +k=1 +x_0=20500000 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs"
}

PostGIS

PostGIS'a nasıl projeksiyon eklerim? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (3874, 'EPSG', 3874, '+proj=tmerc +lat_0=0 +lon_0=20 +k=1 +x_0=20500000 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["ETRS89 / GK20FIN",GEOGCS["ETRS89",DATUM["European_Terrestrial_Reference_System_1989",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6258"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4258"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",20],PARAMETER["scale_factor",1],PARAMETER["false_easting",20500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","3874"]]');

MapServer

MapServer'a nasıl projeksiyon eklerim? →

PROJECTION
  "+proj=tmerc"
  "+lat_0=0"
  "+lon_0=20"
  "+k=1"
  "+x_0=20500000"
  "+y_0=0"
  "+ellps=GRS80"
  "+towgs84=0,0,0,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

GeoServer'a nasıl projeksiyon eklerim? →

3874=PROJCS["ETRS89 / GK20FIN",GEOGCS["ETRS89",DATUM["European_Terrestrial_Reference_System_1989",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6258"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4258"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",20],PARAMETER["scale_factor",1],PARAMETER["false_easting",20500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","3874"]]

İlişkili Koordinat Sistemleri

Mevcut Dönüşümler (4)

Dönüşümler temel CRS'den alınmıştır: EPSG:10690 (ETRS89-FIN [EUREF-FIN])

Dönüşüm	Kaynak → Hedef	Hassasiyet (m)
KKJ to ETRS89-FIN [EUREF-FIN] (3)	4123 → 10690	0.03
KKJ to ETRS89-FIN [EUREF-FIN] (2)	4123 → 10690	0.5
ETRS89-FIN [EUREF-FIN] to WGS 84 (1)	10690 → 4326	1
EUREF-FIN to ETRS89 (1) Kullanım dışı	10690 → 4258	0.1

EUREF-FIN Kullanan Diğer CRS (32)

Sıkça Sorulan Sorular

EPSG:3874 projeksiyonunu GeoServer'a nasıl eklerim?

Aşağıdaki tanımı GeoServer yapılandırma dosyanıza ekleyin:

3874=PROJCS["ETRS89 / GK20FIN",GEOGCS["ETRS89",DATUM["European_Terrestrial_Reference_System_1989",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6258"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4258"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",20],PARAMETER["scale_factor",1],PARAMETER["false_easting",20500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","3874"]]

GeoServer rehberinin tamamını okuyun →

EPSG:3874 projeksiyonunu PostGIS'e nasıl eklerim?

Aşağıdaki tanımı PostGIS yapılandırma dosyanıza ekleyin:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (3874, 'EPSG', 3874, '+proj=tmerc +lat_0=0 +lon_0=20 +k=1 +x_0=20500000 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["ETRS89 / GK20FIN",GEOGCS["ETRS89",DATUM["European_Terrestrial_Reference_System_1989",SPHEROID["GRS 1980",6378137,298.257222101,AUTHORITY["EPSG","7019"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6258"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4258"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",20],PARAMETER["scale_factor",1],PARAMETER["false_easting",20500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","3874"]]');

PostGIS rehberinin tamamını okuyun →

EPSG:3874 projeksiyonunu MapServer'da nasıl kullanırım?

Aşağıdaki tanımı MapServer yapılandırma dosyanıza ekleyin:

PROJECTION
  "+proj=tmerc"
  "+lat_0=0"
  "+lon_0=20"
  "+k=1"
  "+x_0=20500000"
  "+y_0=0"
  "+ellps=GRS80"
  "+towgs84=0,0,0,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

MapServer rehberinin tamamını okuyun →

EPSG:3874 projeksiyonunu Proj4js ile nasıl kullanırım?

Aşağıdaki tanımı Proj4js yapılandırma dosyanıza ekleyin:

proj4.defs("EPSG:3874", "+proj=tmerc +lat_0=0 +lon_0=20 +k=1 +x_0=20500000 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

Proj4js rehberinin tamamını okuyun →

Tür

Projekte

Birim

metre

Geodetik CRS

ETRS89-FIN [EUREF-FIN]

Datum

EUREF-FIN

Elipsoid

GRS 1980

Başlangıç Meridyeni

Greenwich

Kullanım Alanı

Finland - 19.5°E to 20.5°E onshore nominal

Finland - nominally onshore between 19°30'E and 20°30'E but may be used in adjacent areas if a munic…

Koordinat Sistemi

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

Merkez Koordinatları

20500000.00 6676355.62

Projekte Sınırlar

6707657.06 20472032.8420527494.67 6645265.49

WGS84 Sınırları

60.48 19.5020.50 59.92

Veri Kaynağı

EPSG

Bilgi Kaynağı

National Land Survey of Finland; http://www.maanmittauslaitos.fi

Revizyon Tarihi

2025-10-28

Kapsam

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

Açıklamalar

Replaces ETRS89-FIN [EUREF-FIN] / ETRS-GK20FIN (CRS code 3127). (For medium scale mapping and country-wide work use either ETRS89-FIN [EUREF-FIN] / TM35FIN(N,E), code 5048, or its more generally used replacement with axes reversed ETRS89-FIN [EUREF-FIN] / TM35FIN(E,N), code 3067).

EPSG

3874