EPSG:4712 Ascension Island 1958
Geographic system in latitude and longitude, in use: St Helena - Ascension Island. Datum, ellipsoid and transformation to WGS 84 below.
| Code | EPSG:4712 |
|---|---|
| Name | Ascension Island 1958 |
| Type | Geographic system |
| Area of use |
St Helena - Ascension Island St Helena, Ascension and Tristan da Cunha - Ascension Island - onshore. |
| Bounds | W -14,46° · S -8,03° · E -14,24° · N -7,83° |
| Countries | St. Helena |
| Datum | Ascension Island 1958 |
| Ellipsoid | International 1924 a = 6378388 m · 1/f = 297 |
| Unit | degree (Lat north, Lon east) |
| Transformation to WGS 84 | Ascension Island 1958 to WGS 84 (1) (EPSG:15797) — accuracy 44 m |
| Scope | Military survey. |
proj4 definition
+proj=longlat +ellps=intl +towgs84=-205,107,53 +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:4712.
WKT (ESRI format, the .prj content)
GEOGCS["GCS_Ascension_Island_1958",DATUM["D_Ascension_Island_1958",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.