EPSG:29191 SAD69 / UTM zone 21S
Système projeté (Transverse Mercator) en usage : South America - 60°W to 54°W, S hemisphere and SAD69 by country. La définition complète ci-dessous, et la conversion en un clic.
| Code | EPSG:29191 |
|---|---|
| Nom | SAD69 / UTM zone 21S |
| Type | Système projeté — Transverse Mercator |
| Zone d'usage |
South America - 60°W to 54°W, S hemisphere and SAD69 by country Brazil - between 60°W and 54°W, northern and southern hemispheres. In rest of South America between 60°W and 54°W southern hemisphere, onshore. |
| Emprise | O -60,00° · S -38,91° · E -53,99° · N 4,51° |
| Pays | Brésil |
| Datum | South American Datum 1969 |
| Ellipsoïde | GRS 1967 Modified a = 6378160 m · 1/f = 298.25 |
| Système géographique de base | EPSG:4618 — SAD69 |
| Unité | metre (E east, N north) |
| Transformation vers WGS 84 | SAD69 to WGS 84 (1) (EPSG:1864) — précision 19 m |
| Usage | Engineering survey, topographic mapping. |
Paramètres de la projection
| Paramètre | Valeur | Unité |
|---|---|---|
| Latitude of natural origin | 0 | degree |
| Longitude of natural origin | -57 | degree |
| Scale factor at natural origin | 0.9996 | unity |
| False easting | 500000 | metre |
| False northing | 10000000 | metre |
Définition proj4
+proj=utm +zone=21 +south +ellps=aust_SA +units=m +towgs84=-57,1,-41 +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:29191.
WKT (format ESRI, contenu du .prj)
PROJCS["SAD_1969_UTM_Zone_21S",GEOGCS["GCS_South_American_1969",DATUM["D_South_American_1969",SPHEROID["GRS_1967_Truncated",6378160.0,298.25]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",10000000.0],PARAMETER["Central_Meridian",-57.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Autres systèmes — Brésil
- EPSG:29101SAD69 / Brazil Polyconic
- EPSG:29172SAD69 / UTM zone 22N
- EPSG:29188SAD69 / UTM zone 18S
- EPSG:29189SAD69 / UTM zone 19S
- EPSG:29190SAD69 / UTM zone 20S
- EPSG:29192SAD69 / UTM zone 22S
- EPSG:29193SAD69 / UTM zone 23S
- EPSG:29194SAD69 / UTM zone 24S
- EPSG:29195SAD69 / UTM zone 25S
- EPSG:31976SIRGAS 2000 / UTM zone 22N
- EPSG:31978SIRGAS 2000 / UTM zone 18S
- EPSG:31979SIRGAS 2000 / UTM zone 19S
- EPSG:31980SIRGAS 2000 / UTM zone 20S
- EPSG:31981SIRGAS 2000 / UTM zone 21S
- EPSG:31982SIRGAS 2000 / UTM zone 22S
- EPSG:31983SIRGAS 2000 / UTM zone 23S
- EPSG:31984SIRGAS 2000 / UTM zone 24S
- EPSG:31985SIRGAS 2000 / UTM zone 25S
Source : registre EPSG v11.022 (IOGP), via la base PROJ. Vérifiez toujours un code sur epsg.org avant un travail contractuel.