EPSG:2451 — JGD2000 / Japan Plane Rectangular CS IX

Projected · Japan - zone IX

Export Formats

OGC WKT

PROJCS[
    "JGD2000 / Japan Plane Rectangular CS IX",
    GEOGCS[
        "JGD2000",
        DATUM[
            "Japanese_Geodetic_Datum_2000",
            SPHEROID["GRS 1980",6378137,298.257222101],
            TOWGS84[0,0,0,0,0,0,0]
        ],
        PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4612"]
    ],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["latitude_of_origin",36],
    PARAMETER["central_meridian",139.833333333333],
    PARAMETER["scale_factor",0.9999],
    PARAMETER["false_easting",0],
    PARAMETER["false_northing",0],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AUTHORITY["EPSG","2451"]
]

WKT2

PROJCRS[
    "JGD2000 / Japan Plane Rectangular CS IX",
    BASEGEOGCRS[
        "JGD2000",
        DATUM[
            "Japanese Geodetic Datum 2000",
            ELLIPSOID[
                "GRS 1980",
                6378137,
                298.257222101,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7019]
            ],
            ID["EPSG",6612]
        ],
        ID["EPSG",4612]
    ],
    CONVERSION[
        "Japan Plane Rectangular CS zone IX",
        METHOD["Transverse Mercator",ID["EPSG",9807]],
        PARAMETER[
            "Latitude of natural origin",
            36,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8801]
        ],
        PARAMETER[
            "Longitude of natural origin",
            139.833333333334,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8802]
        ],
        PARAMETER[
            "Scale factor at natural origin",
            0.9999,
            SCALEUNIT["unity",1,ID["EPSG",9201]],
            ID["EPSG",8805]
        ],
        PARAMETER[
            "False easting",
            0,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            0,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",17809]
    ],
    CS[Cartesian,2,ID["EPSG",4530]],
    AXIS["Northing (X)",north],
    AXIS["Easting (Y)",east],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",2451]
]

PROJ.4

+proj=tmerc +lat_0=36 +lon_0=139.833333333333 +k=0.9999 +x_0=0 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:2451", "+proj=tmerc +lat_0=36 +lon_0=139.833333333333 +k=0.9999 +x_0=0 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 2451,
  "name": "JGD2000 / Japan Plane Rectangular CS IX",
  "kind": "projected",
  "area": "Japan - zone IX",
  "unit": "metre",
  "bbox": [
    29.31,
    138.4,
    37.98,
    141.11
  ],
  "proj4": "+proj=tmerc +lat_0=36 +lon_0=139.833333333333 +k=0.9999 +x_0=0 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs"
}

PostGIS

How to add a projection to PostGIS? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (2451, 'EPSG', 2451, '+proj=tmerc +lat_0=36 +lon_0=139.833333333333 +k=0.9999 +x_0=0 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["JGD2000 / Japan Plane Rectangular CS IX",GEOGCS["JGD2000",DATUM["Japanese_Geodetic_Datum_2000",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4612"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",36],PARAMETER["central_meridian",139.833333333333],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","2451"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+proj=tmerc"
  "+lat_0=36"
  "+lon_0=139.833333333333"
  "+k=0.9999"
  "+x_0=0"
  "+y_0=0"
  "+ellps=GRS80"
  "+towgs84=0,0,0,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

2451=PROJCS["JGD2000 / Japan Plane Rectangular CS IX",GEOGCS["JGD2000",DATUM["Japanese_Geodetic_Datum_2000",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4612"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",36],PARAMETER["central_meridian",139.833333333333],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","2451"]]

Related Coordinate Systems

Available Transformations (6)

Transformations inherited from base CRS: EPSG:4612 (JGD2000)

Transformation	Source → Target	Accuracy (m)
JGD2000 to JGD2011 (1)	4612 → 6668	0.2
Tokyo to JGD2000 (2)	4301 → 4612	0.2
JGD2000 to WGS 84 (1)	4612 → 4326	1
JGD2000 to JGD2011 (2)	4612 → 6668	1
JGD2000 to WGS 84 (2)	4612 → 4326	1
Tokyo to JGD2000 (1)	4301 → 4612	9

Other CRS using Japanese Geodetic Datum 2000 (26)

Frequently Asked Questions

How do I add EPSG:2451 to GeoServer?

Add the following definition to your GeoServer configuration:

2451=PROJCS["JGD2000 / Japan Plane Rectangular CS IX",GEOGCS["JGD2000",DATUM["Japanese_Geodetic_Datum_2000",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4612"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",36],PARAMETER["central_meridian",139.833333333333],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","2451"]]

Read the full GeoServer guide →

How do I add EPSG:2451 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (2451, 'EPSG', 2451, '+proj=tmerc +lat_0=36 +lon_0=139.833333333333 +k=0.9999 +x_0=0 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["JGD2000 / Japan Plane Rectangular CS IX",GEOGCS["JGD2000",DATUM["Japanese_Geodetic_Datum_2000",SPHEROID["GRS 1980",6378137,298.257222101],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4612"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",36],PARAMETER["central_meridian",139.833333333333],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",0],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","2451"]]');

Read the full PostGIS guide →

How do I add EPSG:2451 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+proj=tmerc"
  "+lat_0=36"
  "+lon_0=139.833333333333"
  "+k=0.9999"
  "+x_0=0"
  "+y_0=0"
  "+ellps=GRS80"
  "+towgs84=0,0,0,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:2451 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:2451", "+proj=tmerc +lat_0=36 +lon_0=139.833333333333 +k=0.9999 +x_0=0 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

Read the full Proj4js guide →

Type

Projected

Unit

metre

Geodetic CRS

JGD2000

Datum

Japanese Geodetic Datum 2000

Ellipsoid

GRS 1980

Prime Meridian

Greenwich

Area of Use

Japan - zone IX

Japan - onshore - Honshu - Tokyo-to. (Excludes offshore island areas of Tokyo-to covered by Japan Pl…

Coordinate System

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

Center Coordinates

-7266.05 -261228.66

Projected Bounds

220482.45 -139237.37112154.28 -740986.58

WGS84 Bounds

37.98 138.40141.11 29.31

Data Source

EPSG

Information Source

Geographic Survey Institute; Japan. http://vldb.gsi.go.jp/sokuchi/datum/tokyodatum.html

Revision Date

2002-06-22

Scope

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

Remarks

Replaces Tokyo / Japan Plane Rectangular CS IX (code 30169).

EPSG

2451