EPSG:5490 RGAF09 / UTM zone 20N
Projected system (Transverse Mercator) in use: Caribbean - French Antilles west of 60°W. The full definition below, and conversion in one click.
| Code | EPSG:5490 |
|---|---|
| Name | RGAF09 / UTM zone 20N |
| Type | Projected system — Transverse Mercator |
| Area of use |
Caribbean - French Antilles west of 60°W French Antilles onshore and offshore west of 60°W - Guadeloupe (including Grande Terre, Basse Terre, Marie Galante, Les Saintes, Iles de la Petite Terre, La Desirade); Martinique; St Barthélemy; northern St Martin. |
| Bounds | W -63,66° · S 14,08° · E -60,00° · N 18,31° |
| Countries | Martinique, St. Barthélemy, St. Martin |
| Datum | Reseau Geodesique des Antilles Francaises 2009 |
| Ellipsoid | GRS 1980 a = 6378137 m · 1/f = 298.257222101 |
| Base geographic system | EPSG:5489 — RGAF09 |
| Unit | metre (E east, N north) |
| Transformation to WGS 84 | RGAF09 to WGS 84 (1) (EPSG:5501) — accuracy 1 m |
| Scope | Engineering survey, topographic mapping. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 0 | degree |
| Longitude of natural origin | -63 | degree |
| Scale factor at natural origin | 0.9996 | unity |
| False easting | 500000 | metre |
| False northing | 0 | metre |
proj4 definition
+proj=utm +zone=20 +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:5490.
WKT (ESRI format, the .prj content)
PROJCS["RGAF09_UTM_Zone_20N",GEOGCS["GCS_RGAF09",DATUM["Reseau_Geodesique_des_Antilles_Francaises_2009",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",-63.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Other systems — Martinique
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.