EPSG:3388 Pulkovo 1942 / Caspian Sea Mercator
Projected system (Mercator (variant B)) in use: Asia - FSU - Caspian Sea. The full definition below, and conversion in one click.
| Code | EPSG:3388 |
|---|---|
| Name | Pulkovo 1942 / Caspian Sea Mercator |
| Type | Projected system — Mercator (variant B) |
| Area of use |
Asia - FSU - Caspian Sea Azerbaijan - offshore; Kazakhstan - offshore; Russian Federation - Caspian Sea; Turkmenistan - offshore. |
| Bounds | W 46,95° · S 37,35° · E 53,93° · N 46,97° |
| Also covers | Azerbaijan, Kazakhstan, Russia, Turkmenistan |
| Datum | Pulkovo 1942 |
| Ellipsoid | Krassowsky 1940 a = 6378245 m · 1/f = 298.3 |
| Base geographic system | EPSG:4284 — Pulkovo 1942 |
| Unit | metre (none north, none east) |
| Transformation to WGS 84 | Pulkovo 1942 to WGS 84 (16) (EPSG:15865) — accuracy 4.5 m |
| Scope | Hydrography and nautical charting. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of 1st standard parallel | 42 | degree |
| Longitude of natural origin | 51 | degree |
| False easting | 0 | metre |
| False northing | 0 | metre |
proj4 definition
+proj=merc +lat_ts=42 +lon_0=51 +x_0=0 +y_0=0 +ellps=krass +units=m +towgs84=25,-141,-78.5,0,0.35,0.736,0 +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:3388.
WKT (ESRI format, the .prj content)
PROJCS["Pulkovo_1942_Caspian_Sea_Mercator",GEOGCS["GCS_Pulkovo_1942",DATUM["D_Pulkovo_1942",SPHEROID["Krasovsky_1940",6378245.0,298.3]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",51.0],PARAMETER["Standard_Parallel_1",42.0],UNIT["Meter",1.0]]Other systems — Azerbaijan
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.