Reference system CH1903

The old, still official reference system for cadastral surveying which was defined and introduced in 1903. The system comprises the definition of a reference ellipsoid (Bessel 1841) fixed in position and orientation to the old fundamental point (old observatory in Bern), the transformation in CHTRS95 and the Swiss oblique conformal cylinder projection ("Swiss Grid"). CH1903 also defines the old official height system for which the "Repère Pierre du Niton" in the port of Geneva serves as the point of origin with a height of 373.6 m.

Simple

Alternate title

Reference system of the old national survey 1903

Date (Creation)
1903-12-31
Purpose

Basis for coordinate transformation

Status
Completed

Owner

Federal Office of Topography swisstopo - Contact
Seftigenstrasse 264
Wabern
3084
https://www.swisstopo.ch

Point of contact

Federal office of topography swisstopo, survey - Surveying Division (Geodesy and Federal Directorate of Cadastral Surveying)
Seftigenstrasse 264
Wabern
3084
CH
https://www.cadastre.ch/
Topic category
  • B Location

Extent

Extent

Description

Topographic Landscape Model

Geographic identifier
TLM

N
S
E
W








Maintenance and update frequency
Not planned
Maintenance note

The data is constant and there is no need updating it

Duration of Conservation
275
Appraisal of Archival Value
A
Reason for Archiving Value
Evidence of business practice
geocat.ch

  • national survey

  • reference system

  • official geodata

  • Conservation and archiving planning AAP - Confederation

  • reference frame

GEMET

  • geodesy

Associated resource

Title

Geodätische Bezugssysteme (Landesvermessung)

Association Type
Reference to a master resource of which this one is a part
Language
Deutsch
Character encoding
UTF8
Language
Français
Character encoding
UTF8
Language
English
Character encoding
UTF8
Basic Geodata
true
Basic Geodata ID

33.1

Basic Geodata Legal Level
Federal
Basic Geodata Type
Reference Geodata
Distribution format

  • nan

Digital transfer options

OnLine resource

https://www.swisstopo.admin.ch/en/swiss-reference-systems

Reference system identifier
CH1903

Metadata

Metadata identifier
195f854e-95d0-494d-b414-1aa278eda71e

Language
Deutsch
Character encoding
UTF8
Language
Français
Character encoding
UTF8
Language
Italiano
Character encoding
UTF8
Language
English
Character encoding
UTF8

Point of contact

Federal office of topography swisstopo, survey - Surveying Division (Geodesy and Federal Directorate of Cadastral Surveying)
Seftigenstrasse 264
Wabern
3084
CH
https://www.cadastre.ch/

Type of resource

Resource scope
Dataset
Metadata linkage

https://www.geocat.ch/geonetwork/srv/api/records/195f854e-95d0-494d-b414-1aa278eda71e

Date info (Creation)
2008-02-13T12:00:00Z
Date info (Revision)
2026-04-13T08:43:28.067372Z

Metadata standard

Title

eCH-0271

 
 

Spatial extent

Keywords

GEMET

geodesy
geocat.ch

Conservation and archiving planning AAP - Confederation national survey official geodata reference frame reference system


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