Description of CRS - DE_DHDN / GK_3
AttributeEntry
CountryGermany
Country identifierDE
CRS identifierDE_DHDN / GK_3
CRS alias
EPSG codes: 31466, 31467, 31468, 31469 
AdV codes: DE_DHDN_3GK2, DE_DHDN_3GK3 DE_DHDN_3GK4, 
DE_DHDN_3GK5 

Note: in EPSG and AdV codes also format descriptions for 
coordinate data sets are included (order of coordinate 
values,  zone number) - may be defined differently  

CRS-EU description encloses all zones 2...5, GK_3 
indicates width of zone - 3 degree 
CRS valid areaGermany, offical CRS in federal states of former West Germany - Schleswig-Holstein, Niedersachsen, Nordrhein-Westfalen, Hessen, Rheinland-Pfalz, Saarland, Baden-Württemberg, Bayern
CRS scopebasis for surveying activities, topographic and base mapping, cadastral
CRS remarks
on GIS accuracy identical to DE_PD/83 / GK_3 and DE_RD/83 
/ GK_3 
Datum identifierDHDN
Datum alias
Deutsches Hauptdreiecksnetz,
Rauenberg Datum, Potsdam Datum
Datum typegeodetic
Datum anchor point
Germany, Rauenberg,
Lat = 52°27'12.021" N,
Lon = 13°22'04.928" E
Datum realization epoch
Datum valid area
Germany, Federal States of former West Germany - 
Schleswig-Holstein, Niedersachsen, Nordrhein-Westfalen, 
Hessen, Rheinland-Pfalz, Saarland, Baden-Württemberg, 
Bayern 
Datum scope
Datum remarks
- DHDN is up to a special degree of accuracy a uniform 
datum for all German Federal States, but at the cm level 
there exist different realisations with different 
additional names for DHDN e.g. LG 177 = Lagestatus 177  
- central point of former network Reichsdreiecksnetz, 
which was the basis of DHDN / PD/83 / RD/83 was Rauenberg 
in Berlin, this point was destroyed in 1910 and substitute 
by point Potsdam, therefore the aliases Rauenberg Datum and 
Potsdam Datum are known for German Datums 
Prime meridian identifierGreenwich
Prime meridian greenwich longitude
Prime meridian remarks
Ellipsoid identifierBessel 1841
Ellipsoid aliasBessel
Ellipsoid semi major axis6 377 397.155 m
Ellipsoid shapetrue
Ellipsoid inverse flattening299.15281285
Ellipsoid remarks
Coordinate system identifierGK_3
Coordinate system typeprojected
Coordinate system dimension2
Coordinate system remarks
Coordinate system axis nameX / Hochwert
Coordinate system axis directionNorth
Coordinate system axis unit identifiermetre
Coordinate system axis nameY / Rechtswert
Coordinate system axis directionEast
Coordinate system axis unit identifiermetre
Operation identifierGK_3
Operation valid areaGermany
Operation scope
Operation method nameTransverse Mercator Projection
Operation method name alias
Gauß Krüger Projection
Operation method formula
Transverse Mercator Mapping Equations, in Hooijberg, 
Practical Geodesy, 1997, pages 81-84 
Operation method parameters number7
Operation method remarks
special German specification of Transverse Mercator 
Projection in zones of 3°, also known as Gauss Krüger 
System 
Operation parameter namelatitude of origin
Operation parameter value
Operation parameter remarks
0°, the Equator
Operation parameter namelongitude of origin
Operation parameter value
central meridian (CM) of each zone
for DE: 6° E, 9° E, 12° E, 15° E in use
Operation parameter remarks
in general: central meridians 3° E, 6° E, 9° E, 12° 
E,.... 
Operation parameter namefalse northing
Operation parameter value
0 m
Operation parameter remarks
Operation parameter namefalse easting
Operation parameter value
500 000  + (n * 10**6) m, with n...zone number 
e.g. 2 500 000 for zone number 2 (CM = 6° E)
Operation parameter remarks
Operation parameter namescale factor at central meridian
Operation parameter value
1.0000
Operation parameter remarks
Operation parameter namewidth of zones
Operation parameter value
Operation parameter remarks
Operation parameter namezone number n
Operation parameter value
n = longitude value of central meridian / 3
for DE: zones 2, 3, 4, 5
Operation parameter remarks