EPSG:5887 TGD2005 / Tonga Map Grid
Projected system (Transverse Mercator) in use: Tonga. The full definition below, and conversion in one click.
| Code | EPSG:5887 |
|---|---|
| Name | TGD2005 / Tonga Map Grid |
| Type | Projected system — Transverse Mercator |
| Area of use |
Tonga Tonga - onshore and offshore. |
| Bounds | W -179,08° · S -25,68° · E -171,28° · N -14,14° |
| Countries | Tonga |
| Datum | Tonga Geodetic Datum 2005 |
| Ellipsoid | GRS 1980 a = 6378137 m · 1/f = 298.257222101 |
| Base geographic system | EPSG:5886 — TGD2005 |
| Unit | metre (E east, N north) |
| Transformation to WGS 84 | TGD2005 to WGS 84 (1) (EPSG:9771) — accuracy 1 m |
| Scope | Geodesy, cadastre, engineering survey, topographic mapping. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 0 | degree |
| Longitude of natural origin | -177 | degree |
| Scale factor at natural origin | 0.9996 | unity |
| False easting | 1500000 | metre |
| False northing | 5000000 | metre |
proj4 definition
+proj=tmerc +lat_0=0 +lon_0=-177 +k=0.9996 +x_0=1500000 +y_0=5000000 +ellps=GRS80 +units=m +towgs84=0,0,0 +no_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:5887.
WKT (ESRI format, the .prj content)
PROJCS["TGD2005_Tonga_Map_Grid",GEOGCS["GCS_TGD2005",DATUM["D_Tonga_Geodetic_Datum_2005",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",1500000.0],PARAMETER["False_Northing",5000000.0],PARAMETER["Central_Meridian",-177.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Other systems — Tonga
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.