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    EPSG reference

    EPSG:28193 — Palestine 1923 / Israeli CS Grid

    Palestine 1923 / Israeli CS Grid (EPSG:28193) — a Projected (metres) system on the a=6378300.789 datum, used in Palestine. Parameters, proj4, WKT, accuracy ±0.1 m, plus…

    At a glance

    EPSG
    28193
    Name
    Palestine 1923 / Israeli CS Grid
    Kind
    Projected (metres)
    Family
    Cassini–Soldner
    Ellipsoid
    a=6378300.789
    Accuracy
    ±0.1 m (vs PROJ)
    Countries
    Palestine
    Convert from this system now

    Area of use

    West34.17°
    South29.45°
    East35.69°
    North33.28°

    Projection parameters

    Projectioncass
    Latitude of origin31.7340969444444
    Central meridian35.2120805555556
    False easting170251.555
    False northing1126867.909
    Semi-major axis6378300.789
    Semi-minor axis6356566.435
    Unitsm
    Helmert shift to WGS84-275.7224,94.7824,340.8944,-8.001,-4.42,-11.821,1
    proj4
    +proj=cass +lat_0=31.7340969444444 +lon_0=35.2120805555556 +x_0=170251.555 +y_0=1126867.909 +a=6378300.789 +b=6356566.435 +units=m +no_defs +towgs84=-275.7224,94.7824,340.8944,-8.001,-4.42,-11.821,1
    WKT (ESRI)
    PROJCS["Palestine 1923 / Israeli CS Grid",GEOGCS["GCS_Palestine 1923 / Israeli CS Grid",DATUM["D_Custom_6378300.789",SPHEROID["Custom_6378300.789",6378300.789,293.4663155389811],TOWGS84[-275.7224,94.7824,340.8944,-8.001,-4.42,-11.821,1]],PRIMEM["Greenwich",0],UNIT["Degree",0.0174532925199433]],PROJECTION["Cassini"],PARAMETER["False_Easting",170251.555],PARAMETER["False_Northing",1126867.909],PARAMETER["Central_Meridian",35.2120805555556],PARAMETER["Latitude_Of_Origin",31.7340969444444],UNIT["Meter",1],AUTHORITY["EPSG","28193"]]

    Sample conversion

    Palestine capital: WGS84 35.21370, 31.76830 → EPSG:28193 170332.565, 1130624.161

    Values are within ±0.1 m at the test point.

    About the Cassini–Soldner family

    Palestine 1923 / Israeli CS Grid uses the Cassini–Soldner projection — a historical belt grid, in metres, that is NOT conformal: scale depends on direction, so angles and shapes are slightly distorted away from the central meridian. Several Palestine and Bahrain cadastral grids are Cassini.

    Because it is non-conformal, a single "scale factor" is not enough — the scale differs along and across the meridian. Treat legacy Cassini coordinates carefully, and reproject to a modern conformal system for GIS work.

    Related systems

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    FAQ

    What is EPSG:28193?
    It is the coordinate system “Palestine 1923 / Israeli CS Grid”, a Projected (metres) system in the Cassini–Soldner family, identified worldwide by the code EPSG:28193.
    What datum does it use, and how accurate is it?
    It is based on the a=6378300.789 ellipsoid and it carries Helmert parameters to WGS84. The residual at the test point is about ±0.1 m versus PROJ; for centimetre work use a geodetic adjustment service.
    Where is this system used?
    It is used in Palestine. This page shows its area of use as a coordinate rectangle above.
    How do I convert EPSG:28193 to WGS84?
    Use the free coordinate converter above (preloaded with this system) to convert to WGS84, UTM, or any other system, within a ±0.1 m residual.

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