EPSG systems

EPSG:3058 Helle 1954 / Jan Mayen Grid

Projected system (Transverse Mercator) in use: Jan Mayen - onshore. The full definition below, and conversion in one click.

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System record
Code	EPSG:3058
Name	Helle 1954 / Jan Mayen Grid
Type	Projected system — Transverse Mercator
Area of use	Jan Mayen - onshore
Bounds	W -9,17° · S 70,75° · E -7,87° · N 71,24°
Countries	Svalbard & Jan Mayen
Datum	Helle 1954
Ellipsoid	International 1924 a = 6378388 m · 1/f = 297
Base geographic system	EPSG:4660 — Helle 1954
Unit	metre (x north, y east)
Transformation to WGS 84	Helle 1954 to WGS 84 (1) (EPSG:1957) — accuracy 1 m
Scope	Topographic mapping.

Projection parameters

Parameter	Value	Unit
Latitude of natural origin	0	degree
Longitude of natural origin	-8.5	degree
Scale factor at natural origin	1	unity
False easting	50000	metre
False northing	-7800000	metre

proj4 definition

+proj=tmerc +lat_0=0 +lon_0=-8.5 +k=1 +x_0=50000 +y_0=-7800000 +ellps=intl +units=m +towgs84=982.6087,552.753,-540.873,6.681627,-31.611492,-19.848161,16.805 +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:3058.

WKT (ESRI format, the .prj content)

PROJCS["Helle_1954_Jan_Mayen_Grid",GEOGCS["GCS_Helle_1954",DATUM["D_Helle_1954",SPHEROID["International_1924",6378388.0,297.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",50000.0],PARAMETER["False_Northing",-7800000.0],PARAMETER["Central_Meridian",-8.5],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]

All systems — Svalbard & Jan Mayen

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 — Svalbard & Jan Mayen