EPSG systems

EPSG:4724 Diego Garcia 1969

Geographic system in latitude and longitude, in use: British Indian Ocean Territory - Diego Garcia. Datum, ellipsoid and transformation to WGS 84 below.

System record
CodeEPSG:4724
NameDiego Garcia 1969
TypeGeographic system
Area of use British Indian Ocean Territory - Diego Garcia
British Indian Ocean Territory - Chagos Archipelago - Diego Garcia.
Bounds W 72,30° · S -7,49° · E 72,55° · N -7,18°
Countries British Indian Ocean Territory
DatumDiego Garcia 1969
Ellipsoid International 1924 a = 6378388 m · 1/f = 297
Unit degree (Lat north, Lon east)
Transformation to WGS 84 Diego Garcia 1969 to WGS 84 (1) (EPSG:15808) — accuracy 44 m
ScopeMilitary survey.

proj4 definition

+proj=longlat +ellps=intl +towgs84=208,-435,-229 +no_defs

Paste it into QGIS, proj4js, PostGIS (spatial_ref_sys) or GDAL. +towgs84 carries the EPSG transformation to WGS 84; the official code stays EPSG:4724.

WKT (ESRI format, the .prj content)

GEOGCS["GCS_ISTS_073_1969",DATUM["D_ISTS_073_1969",SPHEROID["International_1924",6378388.0,297.0]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]]

All systems — British Indian Ocean Territory

Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.