General polynomial of degree 6
Parameter values taken from TM75 to ETRS89 (1) (code 1041) assuming that ETRS89 is coincident with WGS 84 within the accuracy of the transformation. Use iteration for reverse transformation WGS 84 to TM75. May be emulated by NTv2 alternative code 6947.
OGP
2020-03-14
Basis for topographic mapping.
See CRS code 4300 for recommended coordinate axis representation for the human interface.
Ireland - onshore. United Kingdom (UK) - Northern Ireland (Ulster) - onshore.
Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: dec deg