Description of CRS - BG_BGS2005 / LAMB
AttributeEntry
CountryBulgaria
Country identifierBG
CRS identifierBG_BGS2005 / LAMB
CRS alias
Cadastrial Coordinate System 2005, EPSG-Code 7801
CRS valid areaBulgaria - onshore
CRS scopeonly for cadastre, specialized maps (utility maps, soil maps, city development maps, etc.)
CRS remarks
Adopted 2010-07-29
Datum identifierETRS89
Datum alias
Bulgarian Geodetic System 2005 (BGS2005)
Datum typegeodetic
Datum anchor point
densification of ETRS89 realised through network of 112 
permanent GNSS reference stations 
Datum realization epoch2005.0
Datum valid area
Bulgaria, Europe
Datum scope
Datum remarks
consistent with ETRS89, realization ETRF2000, epoch 2005.0
Prime meridian identifierGreenwich
Prime meridian greenwich longitude
Prime meridian remarks
Ellipsoid identifierGRS 80
Ellipsoid aliasNew International
Ellipsoid semi major axis6 378 137 m
Ellipsoid shapetrue
Ellipsoid inverse flattening298.257222101
Ellipsoid remarkssee Moritz, H. (1988): Geodetic Reference System 1980. Bulletin Geodesique, The Geodesists Handbook, 1988, Internat. Union of Geodesy and Geophysics
Coordinate system identifierCCS2005
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 identifierBG_LCC
Operation valid areaBulgaria
Operation scope
Operation method nameLambert Conformal Conic Projection with 2 standard parallels
Operation method name alias
Operation method formula
Lambert Conformal Conic Projection, in Hooijberg, 
Practical Geodesy, 1997, pages 133-139 
Operation method parameters number6
Operation method remarks
Operation parameter namelower parallel
Operation parameter value
42° 00' 00" N
Operation parameter remarks
Operation parameter nameupper parallel
Operation parameter value
43° 20' 00" N
Operation parameter remarks
Operation parameter namelongitude grid origin
Operation parameter value
25° 30' 00" E
Operation parameter remarks
Operation parameter namelatitude grid origin
Operation parameter value
42° 40' 4.35246" N
Operation parameter remarks
Operation parameter namefalse northing
Operation parameter value
4725824.3591 m
Operation parameter remarks
Operation parameter namefalse easting
Operation parameter value
500000 m
Operation parameter remarks