EPSG:3121 PRS92 / Philippines zone 1
Système projeté (Transverse Mercator) en usage : Philippines - zone I. La définition complète ci-dessous, et la conversion en un clic.
| Code | EPSG:3121 |
|---|---|
| Nom | PRS92 / Philippines zone 1 |
| Type | Système projeté — Transverse Mercator |
| Zone d'usage |
Philippines - zone I Philippines - west of 118°E onshore and offshore. |
| Emprise | O 116,04° · S 6,21° · E 118,00° · N 18,64° |
| Pays | Philippines |
| Datum | Philippine Reference System 1992 |
| Ellipsoïde | Clarke 1866 a = 6378206.4 m · 1/f = 294.978698214 |
| Système géographique de base | EPSG:4683 — PRS92 |
| Unité | metre (X east, Y north) |
| Transformation vers WGS 84 | PRS92 to WGS 84 (1) (EPSG:15708) — précision 0.05 m |
| Usage | Engineering survey, topographic mapping. |
Paramètres de la projection
| Paramètre | Valeur | Unité |
|---|---|---|
| Latitude of natural origin | 0 | degree |
| Longitude of natural origin | 117 | degree |
| Scale factor at natural origin | 0.99995 | unity |
| False easting | 500000 | metre |
| False northing | 0 | metre |
Définition proj4
+proj=tmerc +lat_0=0 +lon_0=117 +k=0.99995 +x_0=500000 +y_0=0 +ellps=clrk66 +units=m +towgs84=-127.62,-67.24,-47.04,-3.068,4.903,1.578,-1.06 +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:3121.
WKT (format ESRI, contenu du .prj)
PROJCS["PRS_1992_Philippines_Zone_I",GEOGCS["GCS_PRS_1992",DATUM["D_Philippine_Reference_System_1992",SPHEROID["Clarke_1866",6378206.4,294.978698213898]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",500000.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",117.0],PARAMETER["Scale_Factor",0.99995],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Autres systèmes — Philippines
- EPSG:3122PRS92 / Philippines zone 2
- EPSG:3123PRS92 / Philippines zone 3
- EPSG:3124PRS92 / Philippines zone 4
- EPSG:3125PRS92 / Philippines zone 5
- EPSG:4253Luzon 1911
- EPSG:4683PRS92
- EPSG:25391Luzon 1911 / Philippines zone I
- EPSG:25392Luzon 1911 / Philippines zone II
- EPSG:25393Luzon 1911 / Philippines zone III
- EPSG:25394Luzon 1911 / Philippines zone IV
- EPSG:25395Luzon 1911 / Philippines zone V
Source : registre EPSG v11.022 (IOGP), via la base PROJ. Vérifiez toujours un code sur epsg.org avant un travail contractuel.