Name: OSGB36 to ETRS89 (1)
Method: NTv2
Grid Files: OSTN02_NTv2.gsb
Remarks: Approximate alternative to official OSTN02 method (tfm code 7952). Accuracy at 2000 test points compared to OSTN02 (tfm code 1039): latitude 0.5mm av, 17mm max; longitude 0.8mm av, 23mm max. May be taken as approximate CT to WGS 84 - see code 5339.
Information source: Ordnance Survey of Great Britain, http://www.gps.gov.uk
Revision date: 2021-05-13
Unit: degree
Geodetic CRS: OSGB36
Datum: Ordnance Survey of Great Britain 1936
Ellipsoid: Airy 1830
Prime meridian: Greenwich
Data source: EPSG
Information source: OGP
Revision date: 2002-11-22
Scope: Geodesy.
Remarks: See CRS code 4277 for recommended coordinate axis representation for the human interface.
Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: dec deg