EPSG systems

EPSG:3994 WGS 84 / Mercator 41

Projected system (Mercator (variant B)) in use: New Zealand - offshore Pacific Ocean, Southern Ocean. The full definition below, and conversion in one click.

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System record
Code	EPSG:3994
Name	WGS 84 / Mercator 41
Type	Projected system — Mercator (variant B)
Area of use	New Zealand - offshore Pacific Ocean, Southern Ocean Southwestern Pacific Ocean and Southern Ocean areas surrounding New Zealand.
Bounds	W 155,00° · S -60,00° · E -169,99° · N -25,00°
Countries	New Zealand
Datum	World Geodetic System 1984
Ellipsoid	WGS 84 a = 6378137 m · 1/f = 298.257223563
Base geographic system	EPSG:4326 — WGS 84
Unit	metre (X east, Y north)
Transformation to WGS 84	None: this is WGS 84
Scope	Topographic mapping (medium and small scale).

Projection parameters

Parameter	Value	Unit
Latitude of 1st standard parallel	-41	degree
Longitude of natural origin	100	degree
False easting	0	metre
False northing	0	metre

proj4 definition

+proj=merc +lat_ts=-41 +lon_0=100 +x_0=0 +y_0=0 +datum=WGS84 +units=m +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:3994.

WKT (ESRI format, the .prj content)

PROJCS["WGS_1984_Mercator_41",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",100.0],PARAMETER["Standard_Parallel_1",-41.0],UNIT["Meter",1.0]]

All systems — New Zealand

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 — New Zealand