Description of CRS - TR_ED50 / TR_TM
AttributeEntry
CountryTurkey
Country identifierTR
CRS identifierTR_ED50 / TR_TM
CRS alias
CRS valid areaTurkey
CRS scope
CRS remarks
Datum identifierED50
Datum alias
European Datum 1950
Datum typegeodetic
Datum anchor point
ED50 - Germany, Potsdam, Helmert-Tower,
Lat = 52°22'51.4456" N,
Lon = 13°03'58.9283" E
Datum realization epoch1950 and later in the different countries
Datum valid area
Europe
Datum scope
Datum remarks
Prime meridian identifierGreenwich
Prime meridian greenwich longitude
Prime meridian remarks
Ellipsoid identifierHayford 1909
Ellipsoid aliasInternational 1924
Ellipsoid semi major axis6 378 388 m
Ellipsoid shapetrue
Ellipsoid inverse flattening297
Ellipsoid remarks
Coordinate system identifierTR_TM
Coordinate system typeprojected
Coordinate system dimension2
Coordinate system remarks
Coordinate system axis nameX / northing
Coordinate system axis directionNorth
Coordinate system axis unit identifiermetre
Coordinate system axis nameY / easting
Coordinate system axis directionEast
Coordinate system axis unit identifiermetre
Operation identifierTR_TM
Operation valid areaTurkey
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 number6
Operation method remarks
Operation parameter namelatitude of origin
Operation parameter value
Operation parameter remarks0°, the Equator
Operation parameter namelongitude of origin
Operation parameter value
central meridians 27° E, 30° E, 33° E, 36° E, 39° E, 
42° E, 45° E 
Operation parameter remarkscentral meridian (CM) of each zone
Operation parameter namefalse northing
Operation parameter value
0 m
Operation parameter remarks
Operation parameter namefalse easting
Operation parameter value
500 000 m
Operation parameter remarkszone differentiation by central meridian, coordinates without zone number
Operation parameter namescale factor at central meridian
Operation parameter value
1.000
Operation parameter remarks
Operation parameter namewidth of zones
Operation parameter value
Operation parameter remarks