EPSG:10270 Ostenfeld reconstruction
Projected system (Transverse Mercator) in use: Denmark - northern Schleswig. The full definition below, and conversion in one click.
EPSG publishes no simple transformation to WGS 84 for this datum: conversion works on the ellipsoid alone and can be off by tens of metres.
| Code | EPSG:10270 |
|---|---|
| Name | Ostenfeld reconstruction |
| Type | Projected system — Transverse Mercator |
| Area of use |
Denmark - northern Schleswig Denmark - onshore northern Schleswig and surrounding islands (i.e. Jutland south of the pre-1920 border near the Kongea river). |
| Bounds | W 8,37° · S 54,80° · E 10,16° · N 55,47° |
| Countries | Denmark |
| Datum | Ostenfeld Intermediate Datum |
| Ellipsoid | Bessel 1841 a = 6377397.155 m · 1/f = 299.1528128 |
| Base geographic system | EPSG:10268 — Ostenfeld-IRF |
| Unit | metre (E east, N north) |
| Transformation to WGS 84 | No simple transformation published (ellipsoid alone) |
| Scope | Cadastre. |
Projection parameters
| Parameter | Value | Unit |
|---|---|---|
| Latitude of natural origin | 54.4685 | degree |
| Longitude of natural origin | 9.233 | degree |
| Scale factor at natural origin | 1 | unity |
| False easting | 0 | metre |
| False northing | 0 | metre |
proj4 definition
+proj=tmerc +lat_0=54.4685 +lon_0=9.233 +k=1 +x_0=0 +y_0=0 +ellps=bessel +units=m +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:10270.
WKT (ESRI format, the .prj content)
PROJCS["Ostenfeld_reconstruction",GEOGCS["GCS_Ostenfeld-IRF",DATUM["Ostenfeld_Intermediate_Datum",SPHEROID["Bessel_1841",6377397.155,299.1528128]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",9.233],PARAMETER["Scale_Factor",1.0],PARAMETER["Latitude_Of_Origin",54.4685],UNIT["Meter",1.0]]Other systems — Denmark
- EPSG:4094ETRS89 / DKTM2
- EPSG:4095ETRS89 / DKTM3
- EPSG:4096ETRS89 / DKTM4
- EPSG:5593FEH2010
- EPSG:5596FEH2010 / Fehmarnbelt TM
- EPSG:10158S34J-IRF
- EPSG:10160S34J reconstruction east-orientated
- EPSG:10249S34S-IRF
- EPSG:10250S34S reconstruction east-orientated
- EPSG:10252S45B-IRF
- EPSG:10254S45B reconstruction east-orientated
- EPSG:10256GS-IRF
- EPSG:10258GS reconstruction east-orientated
- EPSG:10260GSB-IRF
- EPSG:10262GSB reconstruction east-orientated
- EPSG:10265KK-IRF
- EPSG:10266KK reconstruction east-orientated
- EPSG:10268Ostenfeld-IRF
Source: EPSG registry v11.022 (IOGP), through the PROJ database. Always check a code on epsg.org before contractual work.