EPSG systems

EPSG:6688 JGD2011 / UTM zone 51N

Projected system (Transverse Mercator) in use: Japan - 120°E to 126°E. The full definition below, and conversion in one click.

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System record
Code	EPSG:6688
Name	JGD2011 / UTM zone 51N
Type	Projected system — Transverse Mercator
Area of use	Japan - 120°E to 126°E Japan - west of 126°E, onshore and offshore.
Bounds	W 122,38° · S 21,10° · E 126,00° · N 29,71°
Countries	Japan
Datum	Japanese Geodetic Datum 2011
Ellipsoid	GRS 1980 a = 6378137 m · 1/f = 298.257222101
Base geographic system	EPSG:6668 — JGD2011
Unit	metre (E east, N north)
Transformation to WGS 84	JGD2011 to WGS 84 (1) (EPSG:9936) — accuracy 1 m
Scope	Topographic mapping (medium scale).

Projection parameters

Parameter	Value	Unit
Latitude of natural origin	0	degree
Longitude of natural origin	123	degree
Scale factor at natural origin	0.9996	unity
False easting	500000	metre
False northing	0	metre

proj4 definition

+proj=utm +zone=51 +ellps=GRS80 +units=m +towgs84=0,0,0 +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:6688.

WKT (ESRI format, the .prj content)

PROJCS["JGD_2011_UTM_Zone_51N",GEOGCS["GCS_JGD_2011",DATUM["D_JGD_2011",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",123.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

All systems — Japan

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.

Projection parameters

proj4 definition

WKT (ESRI format, the .prj content)

Other systems — Japan