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Name: CH1903 to ETRS89 (1)
Method: Geocentric translations (geog2D domain)
Remarks: Parameter values from CH1903+ to ETRS89 (tfm code 1647). Application of these parameters to CH1903 ignores the scale distortions in the CH1903 network, hence low accuracy. In EPSG db v5.2 to v8.9 given to 1dm; the difference in output of cms is considered by swisstopo to be insignificant given the tfm accuracy. Replaced by CH1903 to ETRS89 (2) (CT code 7674) and transformation to national realization CH1903 to ETRS89-CHE [CHTRS95] (2) (CT code 11782).
Information source: Bundesamt für Landestopografie swisstopo; www.swisstopo.ch. Aufbau der Landesvermessung der Schweiz 'LV95' Teil 3: Terrestrische Bezugssysteme und Bezugsrahmen. L+T 1999. Also at Eurogeographics http://www.crs-geo.eu/ to 1 decimal place precision.
Revision date: 2026-07-21
Unit: degree
Geodetic CRS: CH1903
Datum: CH1903
Ellipsoid: Bessel 1841
Prime meridian: Greenwich
Data source: EPSG
Information source: OGP
Revision date: 2002-11-22
Scope: Geodesy.
Remarks: See CRS code 4149 for recommended coordinate axis representation for the human interface.
Area of use: Liechtenstein; Switzerland.
Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: dec deg
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