EPSG:28991

Amersfoort / RD Old

Available transformations
to EPSG:4230

Selected transformation

Remarks: Adopted by NAM in 2006, replacing polynomial tfms 1046, 6304, 1050 and 6306.

Information source: Shell / NAM

Revision date: 2015-04-22

Attributes

Unit: metre

Geodetic CRS: Amersfoort

Datum: Amersfoort

Ellipsoid: Bessel 1841

Prime meridian: Greenwich

Data source: EPSG

Revision date: 2000-03-07

Scope: Engineering survey, topographic mapping.

Remarks: Replaced by 28992 (Amersfoort / RD New).

Area of use: Netherlands - onshore, including Waddenzee, Dutch Wadden Islands and 12-mile offshore coastal zone.

Coordinate system: Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: m.

Center coordinates
-12107.81 7783.87

Projected bounds:
-154353.64 -156328.99
129347.25 174111.02

WGS84 bounds:
3.2 50.75
7.22 53.7

Netherlands - onshore, including Waddenzee, Dutch Wadden Islands and 12-mile offshore coastal zone.
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Definition: OGC Well Known Text 2 (2019)

BOUNDCRS[
    SOURCECRS[
        BOUNDCRS[
            SOURCECRS[
                PROJCRS["Amersfoort / RD Old",
                    BASEGEOGCRS["Amersfoort",
                        DATUM["Amersfoort",
                            ELLIPSOID["Bessel 1841",6377397.155,299.1528128,
                                LENGTHUNIT["metre",1]]],
                        PRIMEM["Greenwich",0,
                            ANGLEUNIT["degree",0.0174532925199433]],
                        ID["EPSG",4289]],
                    CONVERSION["RD Old",
                        METHOD["Oblique Stereographic",
                            ID["EPSG",9809]],
                        PARAMETER["Latitude of natural origin",52.1561605555556,
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                        PARAMETER["False northing",0,
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                    CS[Cartesian,2],
                        AXIS["easting (X)",east,
                            ORDER[1],
                            LENGTHUNIT["metre",1]],
                        AXIS["northing (Y)",north,
                            ORDER[2],
                            LENGTHUNIT["metre",1]],
                    ID["EPSG",28991]]],
            TARGETCRS[
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                    ENSEMBLE["World Geodetic System 1984 ensemble",
                        MEMBER["World Geodetic System 1984 (Transit)"],
                        MEMBER["World Geodetic System 1984 (G730)"],
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                        MEMBER["World Geodetic System 1984 (G1150)"],
                        MEMBER["World Geodetic System 1984 (G1674)"],
                        MEMBER["World Geodetic System 1984 (G1762)"],
                        MEMBER["World Geodetic System 1984 (G2139)"],
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                            ANGLEUNIT["degree",0.0174532925199433]],
                        AXIS["geodetic longitude (Lon)",east,
                            ORDER[2],
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                PARAMETER["Z-axis translation",465.84,
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                PARAMETER["Y-axis rotation",-0.359705195614311,
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                PARAMETER["Z-axis rotation",1.86849100035057,
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                PARAMETER["Scale difference",1.0000040772,
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            PRIMEM["Greenwich",0,
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                    ANGLEUNIT["degree",0.0174532925199433]],
                AXIS["geodetic longitude (Lon)",east,
                    ORDER[2],
                    ANGLEUNIT["degree",0.0174532925199433]],
            USAGE[
                SCOPE["Geodesy."],
                AREA["Europe - west: Andorra; Cyprus; Denmark - onshore and offshore; Faroe Islands - onshore; France - offshore; Germany - offshore North Sea; Gibraltar; Greece - offshore; Israel - offshore; Italy including San Marino and Vatican City State; Ireland offshore; Malta; Netherlands - offshore; North Sea; Norway including Svalbard - onshore and offshore; Portugal - mainland - offshore; Spain - onshore; Türkiye (Turkey) - onshore and offshore; United Kingdom - UKCS offshore east of 6°W including Channel Islands (Guernsey and Jersey). Egypt - Western Desert; Iraq - onshore; Jordan."],
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            ID["EPSG",4230]]],
    ABRIDGEDTRANSFORMATION["Inverse of ED50 to WGS 84 (18)",
        METHOD["Inverse of Position Vector transformation (geog2D domain)",
            ID["INVERSE(EPSG)",9606]],
        PARAMETER["X-axis translation",-89.5,
            ID["EPSG",8605]],
        PARAMETER["Y-axis translation",-93.8,
            ID["EPSG",8606]],
        PARAMETER["Z-axis translation",-123.1,
            ID["EPSG",8607]],
        PARAMETER["X-axis rotation",0,
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        PARAMETER["Y-axis rotation",0,
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        PARAMETER["Z-axis rotation",-0.156,
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        PARAMETER["Scale difference",1.0000012,
            ID["EPSG",8611]],
        USAGE[
            SCOPE["Oil and gas exploration and production."],
            AREA["Denmark - offshore North Sea; Ireland - offshore; Netherlands - offshore; United Kingdom - UKCS offshore."],
            BBOX[47.42,-16.1,63.89,10.86]],
        ID["INVERSE(EPSG)",1311],
        REMARK["Recommended CT for UKCS and IrishCS petroleum purposes, known as ""Common Offshore"". Based on ED50 to WGS 72 (precise ephemeris) 6-nations agreement of 1981 with which precise to broadcast and broadcast to WGS 84 transformations have been concatenated."]]]

Definition: PROJ.4

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Definition: JavaScript (Proj4js)

proj4.defs("EPSG:28991","+proj=sterea +lat_0=52.1561605555556 +lon_0=5.38763888888889 +k=0.9999079 +x_0=0 +y_0=0 +ellps=bessel +towgs84=565.04,49.91,465.84,-0.409394387439237,0.359705195614311,-1.86849100035057,4.0772 +units=m +no_defs +type=crs");

Definition: JSON

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                    "ellipsoid": {
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        },
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        "id": {
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                        }
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                }
            },
            {
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            {
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                "id": {
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                    "code": 8607
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                "name": "X-axis rotation",
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}

Definition: MapServer - MAPfile

PROJECTION
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	"units=m"
	"no_defs"
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END

Definition: Mapnik

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