EPSG:4710 Astro DOS 71
Geographic system in latitude and longitude, in use: St Helena - St Helena Island. Datum, ellipsoid and transformation to WGS 84 below.
| Code | EPSG:4710 |
|---|---|
| Name | Astro DOS 71 |
| Type | Geographic system |
| Area of use |
St Helena - St Helena Island St Helena, Ascension and Tristan da Cunha - St Helena Island - onshore. |
| Bounds | W -5,85° · S -16,08° · E -5,59° · N -15,85° |
| Countries | St. Helena |
| Datum | Astro DOS 71 |
| Ellipsoid | International 1924 a = 6378388 m · 1/f = 297 |
| Unit | degree (Lat north, Lon east) |
| Transformation to WGS 84 | Astro DOS 71 to WGS 84 (2) (EPSG:7894) — accuracy 1 m |
| Scope | Geodesy, topographic mapping. |
proj4 definition
+proj=longlat +ellps=intl +towgs84=-323.65,551.39,-491.22 +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:4710.
WKT (ESRI format, the .prj content)
GEOGCS["GCS_DOS_71_4",DATUM["D_DOS_71_4",SPHEROID["International_1924",6378388.0,297.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]Other systems — St. Helena
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.