EPSG:3123 PRS92 / Philippines zone 3
Projected system (Transverse Mercator) in use: Philippines - zone III. The full definition below, and conversion in one click.
| Code | EPSG:3123 |
|---|---|
| Name | PRS92 / Philippines zone 3 |
| Type | Projected system — Transverse Mercator |
| Area of use |
Philippines - zone III Philippines - approximately between 120°E and 122°E, onshore and offshore. Luzon (west of 122°E); Mindoro. |
| Bounds | W 119,70° · S 3,00° · E 122,21° · N 21,62° |
| Countries | Philippines |
| Datum | Philippine Reference System 1992 |
| Ellipsoid | Clarke 1866 a = 6378206.4 m · 1/f = 294.978698214 |
| Base geographic system | EPSG:4683 — PRS92 |
| Unit | metre (X east, Y north) |
| Transformation to WGS 84 | PRS92 to WGS 84 (1) (EPSG:15708) — accuracy 0.05 m |
| Scope | Engineering survey, topographic mapping. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 0 | degree |
| Longitude of natural origin | 121 | degree |
| Scale factor at natural origin | 0.99995 | unity |
| False easting | 500000 | metre |
| False northing | 0 | metre |
proj4 definition
+proj=tmerc +lat_0=0 +lon_0=121 +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_defsPaste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:3123.
WKT (ESRI format, the .prj content)
PROJCS["PRS_1992_Philippines_Zone_III",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",121.0],PARAMETER["Scale_Factor",0.99995],PARAMETER["Latitude_Of_Origin",0.0],UNIT["Meter",1.0]]Other systems — Philippines
- EPSG:3121PRS92 / Philippines zone 1
- EPSG:3122PRS92 / Philippines zone 2
- 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: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.