Timbalai 1948 / RSO Borneo (m)

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Brunei Darussalam - onshore and offshore., accuracy 1.0 m, code 5248 (deprecated) [7]

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Method: Geocentric translations (geog2D domain)

Remarks: Derived at 8 stations. Accuracy 10m, 10m and 12m in X, Y and Z axes.

Information source: U.S. Defense Mapping Agency TR8350.2 September 1987.

Revision date: 2020-03-14

Attributes

Unit: metre

Geodetic CRS: Timbalai 1948

Datum: Timbalai 1948

Ellipsoid: Everest 1830 (1967 Definition)

Prime meridian: Greenwich

Data source: EPSG

Information source: Defence Geographic Centre.

Revision date: 2020-12-14

Scope: Exploration and production operations in Brunei. Formerly also topographic mapping (large and medium scale) and engineering survey.

Remarks: Originally defined in chains of 792 inches, see CRS 29871 and 29872. Adopts Sears 1922 conversion of 39.370147 inches per metre. Replaced by CRS 3376 in East Malaysia and CRS 5247 in Brunei. See also CRS 29874 used by the Sarawak Land and Survey Dept.

Area of use: Brunei - onshore and offshore; Malaysia - East Malaysia (Sabah; Sarawak) - onshore and offshore.

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

Covered area powered by MapTiler

Center coordinates
530111.36 471513.35

Projected bounds:
-42207.9 94041.54
1105469.97 852213.62

WGS84 bounds:
109.31 0.85
119.61 7.67

Brunei - onshore and offshore; Malaysia - East Malaysia (Sabah; Sarawak) - onshore and offshore.

Definition: OGC Well Known Text

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PROJCS["Timbalai 1948 / RSO Borneo (m)",
    GEOGCS["Timbalai 1948",
        DATUM["Timbalai_1948",
            SPHEROID["Everest 1830 (1967 Definition)",6377298.556,300.8017],
            TOWGS84[-679,669,-48,0,0,0,0]],
        PRIMEM["Greenwich",0,
            AUTHORITY["EPSG","8901"]],
        UNIT["degree",0.0174532925199433,
            AUTHORITY["EPSG","9122"]],
        AUTHORITY["EPSG","4298"]],
    PROJECTION["Hotine_Oblique_Mercator_Azimuth_Center"],
    PARAMETER["latitude_of_center",4],
    PARAMETER["longitude_of_center",115],
    PARAMETER["azimuth",53.3158204722222],
    PARAMETER["rectified_grid_angle",53.1301023611111],
    PARAMETER["scale_factor",0.99984],
    PARAMETER["false_easting",590476.87],
    PARAMETER["false_northing",442857.65],
    UNIT["metre",1,
        AUTHORITY["EPSG","9001"]],
    AXIS["Easting",EAST],
    AXIS["Northing",NORTH],
    AUTHORITY["EPSG","29873"]]

Definition: OGC Well Known Text 2 (2019)

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PROJCRS["Timbalai 1948 / RSO Borneo (m)",
    BASEGEOGCRS["Timbalai 1948",
        DATUM["Timbalai 1948",
            ELLIPSOID["Everest 1830 (1967 Definition)",6377298.556,300.8017,
                LENGTHUNIT["metre",1]]],
        PRIMEM["Greenwich",0,
            ANGLEUNIT["degree",0.0174532925199433]],
        ID["EPSG",4298]],
    CONVERSION["Rectified Skew Orthomorphic Borneo Grid (metre)",
        METHOD["Hotine Oblique Mercator (variant B)",
            ID["EPSG",9815]],
        PARAMETER["Latitude of projection centre",4,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8811]],
        PARAMETER["Longitude of projection centre",115,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8812]],
        PARAMETER["Azimuth of initial line",53.3158204722222,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8813]],
        PARAMETER["Angle from Rectified to Skew Grid",53.1301023611111,
            ANGLEUNIT["degree",0.0174532925199433],
            ID["EPSG",8814]],
        PARAMETER["Scale factor on initial line",0.99984,
            SCALEUNIT["unity",1],
            ID["EPSG",8815]],
        PARAMETER["Easting at projection centre",590476.87,
            LENGTHUNIT["metre",1],
            ID["EPSG",8816]],
        PARAMETER["Northing at projection centre",442857.65,
            LENGTHUNIT["metre",1],
            ID["EPSG",8817]]],
    CS[Cartesian,2],
        AXIS["(E)",east,
            ORDER[1],
            LENGTHUNIT["metre",1]],
        AXIS["(N)",north,
            ORDER[2],
            LENGTHUNIT["metre",1]],
    USAGE[
        SCOPE["Exploration and production operations in Brunei. Formerly also topographic mapping (large and medium scale) and engineering survey."],
        AREA["Brunei - onshore and offshore; Malaysia - East Malaysia (Sabah; Sarawak) - onshore and offshore."],
        BBOX[0.85,109.31,7.67,119.61]],
    ID["EPSG",29873]]

Definition: ESRI Well Known Text

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PROJCS["Timbalai_1948_RSO_Borneo_Meters",
    GEOGCS["GCS_Timbalai_1948",
        DATUM["D_Timbalai_1948",
            SPHEROID["Everest_Definition_1967",6377298.556,300.8017]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Rectified_Skew_Orthomorphic_Center"],
    PARAMETER["False_Easting",590476.87],
    PARAMETER["False_Northing",442857.65],
    PARAMETER["Scale_Factor",0.99984],
    PARAMETER["Azimuth",53.3158204722222],
    PARAMETER["Longitude_Of_Center",115.0],
    PARAMETER["Latitude_Of_Center",4.0],
    PARAMETER["XY_Plane_Rotation",53.1301023611111],
    UNIT["Meter",1.0]]

Definition: PROJ.4

+proj=omerc +lat_0=4 +lonc=115 +alpha=53.3158204722222 +gamma=53.1301023611111 +k=0.99984 +x_0=590476.87 +y_0=442857.65 +ellps=evrstSS +towgs84=-679,669,-48,0,0,0,0 +units=m +no_defs +type=crs

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:29873","+proj=omerc +lat_0=4 +lonc=115 +alpha=53.3158204722222 +gamma=53.1301023611111 +k=0.99984 +x_0=590476.87 +y_0=442857.65 +ellps=evrstSS +towgs84=-679,669,-48,0,0,0,0 +units=m +no_defs +type=crs");

Definition: JSON

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{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "ProjectedCRS",
    "name": "Timbalai 1948 / RSO Borneo (m)",
    "base_crs": {
        "name": "Timbalai 1948",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Timbalai 1948",
            "ellipsoid": {
                "name": "Everest 1830 (1967 Definition)",
                "semi_major_axis": 6377298.556,
                "inverse_flattening": 300.8017
            }
        },
        "coordinate_system": {
            "subtype": "ellipsoidal",
            "axis": [
                {
                    "name": "Geodetic latitude",
                    "abbreviation": "Lat",
                    "direction": "north",
                    "unit": "degree"
                },
                {
                    "name": "Geodetic longitude",
                    "abbreviation": "Lon",
                    "direction": "east",
                    "unit": "degree"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 4298
        }
    },
    "conversion": {
        "name": "Rectified Skew Orthomorphic Borneo Grid (metre)",
        "method": {
            "name": "Hotine Oblique Mercator (variant B)",
            "id": {
                "authority": "EPSG",
                "code": 9815
            }
        },
        "parameters": [
            {
                "name": "Latitude of projection centre",
                "value": 4,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8811
                }
            },
            {
                "name": "Longitude of projection centre",
                "value": 115,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8812
                }
            },
            {
                "name": "Azimuth of initial line",
                "value": 53.3158204722222,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8813
                }
            },
            {
                "name": "Angle from Rectified to Skew Grid",
                "value": 53.1301023611111,
                "unit": "degree",
                "id": {
                    "authority": "EPSG",
                    "code": 8814
                }
            },
            {
                "name": "Scale factor on initial line",
                "value": 0.99984,
                "unit": "unity",
                "id": {
                    "authority": "EPSG",
                    "code": 8815
                }
            },
            {
                "name": "Easting at projection centre",
                "value": 590476.87,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8816
                }
            },
            {
                "name": "Northing at projection centre",
                "value": 442857.65,
                "unit": "metre",
                "id": {
                    "authority": "EPSG",
                    "code": 8817
                }
            }
        ]
    },
    "coordinate_system": {
        "subtype": "Cartesian",
        "axis": [
            {
                "name": "Easting",
                "abbreviation": "E",
                "direction": "east",
                "unit": "metre"
            },
            {
                "name": "Northing",
                "abbreviation": "N",
                "direction": "north",
                "unit": "metre"
            }
        ]
    },
    "scope": "Exploration and production operations in Brunei. Formerly also topographic mapping (large and medium scale) and engineering survey.",
    "area": "Brunei - onshore and offshore; Malaysia - East Malaysia (Sabah; Sarawak) - onshore and offshore.",
    "bbox": {
        "south_latitude": 0.85,
        "west_longitude": 109.31,
        "north_latitude": 7.67,
        "east_longitude": 119.61
    },
    "id": {
        "authority": "EPSG",
        "code": 29873
    }
}

Definition: GeoServer

29873=PROJCS["Timbalai 1948 / RSO Borneo (m)",GEOGCS["Timbalai 1948",DATUM["Timbalai_1948",SPHEROID["Everest 1830 (1967 Definition)",6377298.556,300.8017],TOWGS84[-679,669,-48,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4298"]],PROJECTION["Hotine_Oblique_Mercator_Azimuth_Center"],PARAMETER["latitude_of_center",4],PARAMETER["longitude_of_center",115],PARAMETER["azimuth",53.3158204722222],PARAMETER["rectified_grid_angle",53.1301023611111],PARAMETER["scale_factor",0.99984],PARAMETER["false_easting",590476.87],PARAMETER["false_northing",442857.65],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","29873"]]

Definition: MapServer - MAPfile

PROJECTION
	"proj=omerc"
	"lat_0=4"
	"lonc=115"
	"alpha=53.3158204722222"
	"gamma=53.1301023611111"
	"k=0.99984"
	"x_0=590476.87"
	"y_0=442857.65"
	"ellps=evrstSS"
	"towgs84=-679,669,-48,0,0,0,0"
	"units=m"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=omerc +lat_0=4 +lonc=115 +alpha=53.3158204722222 +gamma=53.1301023611111 +k=0.99984 +x_0=590476.87 +y_0=442857.65 +ellps=evrstSS +towgs84=-679,669,-48,0,0,0,0 +units=m +no_defs +type=crs">
	<Layer srs="+proj=omerc +lat_0=4 +lonc=115 +alpha=53.3158204722222 +gamma=53.1301023611111 +k=0.99984 +x_0=590476.87 +y_0=442857.65 +ellps=evrstSS +towgs84=-679,669,-48,0,0,0,0 +units=m +no_defs +type=crs">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 29873, 'EPSG', 29873, '+proj=omerc +lat_0=4 +lonc=115 +alpha=53.3158204722222 +gamma=53.1301023611111 +k=0.99984 +x_0=590476.87 +y_0=442857.65 +ellps=evrstSS +towgs84=-679,669,-48,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["Timbalai 1948 / RSO Borneo (m)",GEOGCS["Timbalai 1948",DATUM["Timbalai_1948",SPHEROID["Everest 1830 (1967 Definition)",6377298.556,300.8017],TOWGS84[-679,669,-48,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4298"]],PROJECTION["Hotine_Oblique_Mercator_Azimuth_Center"],PARAMETER["latitude_of_center",4],PARAMETER["longitude_of_center",115],PARAMETER["azimuth",53.3158204722222],PARAMETER["rectified_grid_angle",53.1301023611111],PARAMETER["scale_factor",0.99984],PARAMETER["false_easting",590476.87],PARAMETER["false_northing",442857.65],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","29873"]]');

EPSG:29873