EPSG:21818 Bogota 1975 / UTM zone 18N
Système projeté (Transverse Mercator) en usage : Colombia - offshore Caribbean west of 72°W. La définition complète ci-dessous, et la conversion en un clic.
| Code | EPSG:21818 |
|---|---|
| Nom | Bogota 1975 / UTM zone 18N |
| Type | Système projeté — Transverse Mercator |
| Zone d'usage |
Colombia - offshore Caribbean west of 72°W Colombia - offshore Caribbean west of 72°W of Greenwich. |
| Emprise | O -77,37° · S 7,90° · E -72,00° · N 13,68° |
| Pays | Colombie |
| Datum | Bogota 1975 |
| Ellipsoïde | International 1924 a = 6378388 m · 1/f = 297 |
| Système géographique de base | EPSG:4218 — Bogota 1975 |
| Unité | metre (E east, N north) |
| Transformation vers WGS 84 | Bogota 1975 to WGS 84 (1) (EPSG:1125) — précision 10 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 | 0 | metre |
Définition proj4
+proj=utm +zone=18 +ellps=intl +units=m +towgs84=307,304,-318 +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:21818.
WKT (format ESRI, contenu du .prj)
PROJCS["Bogota_UTM_Zone_18N",GEOGCS["GCS_Bogota",DATUM["D_Bogota",SPHEROID["International_1924",6378388.0,297.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-75.0],PARAMETER["Scale_Factor",0.9996],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Autres systèmes — Colombie
- EPSG:6270MAGNA-SIRGAS / Santa Marta urban grid
- EPSG:6271MAGNA-SIRGAS / Sucre urban grid
- EPSG:6272MAGNA-SIRGAS / Tunja urban grid
- EPSG:6273MAGNA-SIRGAS / Valledupar urban grid
- EPSG:6274MAGNA-SIRGAS / Villavicencio urban grid
- EPSG:6275MAGNA-SIRGAS / Yopal urban grid
- EPSG:9377MAGNA-SIRGAS 2018 / Origen-Nacional
- EPSG:11114MAGNA-SIRGAS 2018 / Colombia Far West zone
- EPSG:11115MAGNA-SIRGAS 2018 / Colombia West zone
- EPSG:11116MAGNA-SIRGAS 2018 / Colombia Bogota zone
- EPSG:11117MAGNA-SIRGAS 2018 / Colombia East Central zone
- EPSG:11118MAGNA-SIRGAS 2018 / Colombia East zone
- EPSG:20046MAGNA-SIRGAS 2018
- EPSG:21896Bogota 1975 / Colombia West zone
- EPSG:21897Bogota 1975 / Colombia Bogota zone
- EPSG:21898Bogota 1975 / Colombia East Central zone
- EPSG:21899Bogota 1975 / Colombia East zone
- EPSG:26709NAD27 / UTM zone 9N
Source : registre EPSG v11.022 (IOGP), via la base PROJ. Vérifiez toujours un code sur epsg.org avant un travail contractuel.