EPSG:4121 GGRS87
Geographic system in latitude and longitude, in use: Greece - onshore. Datum, ellipsoid and transformation to WGS 84 below.
| Code | EPSG:4121 |
|---|---|
| Name | GGRS87 |
| Type | Geographic system |
| Area of use | Greece - onshore |
| Bounds | W 19,57° · S 34,88° · E 28,30° · N 41,75° |
| Countries | Greece |
| Datum | Greek Geodetic Reference System 1987 |
| Ellipsoid | GRS 1980 a = 6378137 m · 1/f = 298.257222101 |
| Unit | degree (Lat north, Lon east) |
| Transformation to WGS 84 | GGRS87 to WGS 84 (1) (EPSG:1272) — accuracy 1 m |
| Scope | Geodesy. |
proj4 definition
+proj=longlat +ellps=GRS80 +towgs84=-199.87,74.79,246.62 +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:4121.
WKT (ESRI format, the .prj content)
GEOGCS["GCS_GGRS_1987",DATUM["D_GGRS_1987",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]Other systems — Greece
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.