EPSG:31993 SIRGAS 1995 / UTM zone 18S
Système projeté (Transverse Mercator) en usage : South America - 78°W to 72°W, S hemisphere and SIRGAS 1995 by country. La définition complète ci-dessous, et la conversion en un clic.
| Code | EPSG:31993 |
|---|---|
| Nom | SIRGAS 1995 / UTM zone 18S |
| Type | Système projeté — Transverse Mercator |
| Zone d'usage |
South America - 78°W to 72°W, S hemisphere and SIRGAS 1995 by country South America between 78°W and 72°W, southern hemisphere, onshore and offshore. |
| Emprise | O -78,00° · S -59,36° · E -71,99° · N 0,00° |
| Pays | Monde |
| Datum | Sistema de Referencia Geocentrico para America del Sur 1995 |
| Ellipsoïde | GRS 1980 a = 6378137 m · 1/f = 298.257222101 |
| Système géographique de base | EPSG:4170 — SIRGAS 1995 |
| Unité | metre (E east, N north) |
| Transformation vers WGS 84 | SIRGAS 1995 to WGS 84 (1) (EPSG:1581) — précision 2 m |
| Usage | Engineering survey, topographic mapping. |
Paramètres de la projection
| Paramètre | Valeur | Unité |
|---|---|---|
| Latitude of natural origin | 0 | degree |
| Longitude of natural origin | -75 | degree |
| Scale factor at natural origin | 0.9996 | unity |
| False easting | 500000 | metre |
| False northing | 10000000 | metre |
Définition proj4
+proj=utm +zone=18 +south +ellps=GRS80 +units=m +towgs84=0,0,0 +no_defsÀ coller dans QGIS, proj4js, PostGIS (spatial_ref_sys) ou GDAL. +towgs84 porte la transformation EPSG vers WGS 84 ; le code officiel reste EPSG:31993.
WKT (format ESRI, contenu du .prj)
PROJCS["SIRGAS_UTM_Zone_18S",GEOGCS["GCS_SIRGAS",DATUM["D_SIRGAS",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",10000000.0],PARAMETER["Central_Meridian",-75.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Autres systèmes — Monde
- EPSG:31972SIRGAS 2000 / UTM zone 18N
- EPSG:31973SIRGAS 2000 / UTM zone 19N
- EPSG:31974SIRGAS 2000 / UTM zone 20N
- EPSG:31975SIRGAS 2000 / UTM zone 21N
- EPSG:31977SIRGAS 2000 / UTM zone 17S
- EPSG:31986SIRGAS 1995 / UTM zone 17N
- EPSG:31987SIRGAS 1995 / UTM zone 18N
- EPSG:31988SIRGAS 1995 / UTM zone 19N
- EPSG:31989SIRGAS 1995 / UTM zone 20N
- EPSG:31990SIRGAS 1995 / UTM zone 21N
- EPSG:31991SIRGAS 1995 / UTM zone 22N
- EPSG:31994SIRGAS 1995 / UTM zone 19S
- EPSG:31995SIRGAS 1995 / UTM zone 20S
- EPSG:31996SIRGAS 1995 / UTM zone 21S
- EPSG:31997SIRGAS 1995 / UTM zone 22S
- EPSG:31998SIRGAS 1995 / UTM zone 23S
- EPSG:31999SIRGAS 1995 / UTM zone 24S
- EPSG:32000SIRGAS 1995 / UTM zone 25S
Source : registre EPSG v11.022 (IOGP), via la base PROJ. Vérifiez toujours un code sur epsg.org avant un travail contractuel.