EPSG:23831 — DGN95 / Indonesia TM-3 zone 47.1

PROJCRS[
    "DGN95 / Indonesia TM-3 zone 47.1",
    BASEGEOGCRS[
        "DGN95",
        DATUM[
            "Datum Geodesi Nasional 1995",
            ELLIPSOID[
                "WGS 84",
                6378137,
                298.257223563,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7030]
            ],
            ID["EPSG",6755]
        ],
        ID["EPSG",4755]
    ],
    CONVERSION[
        "Indonesia TM-3 zone 47.1",
        METHOD["Transverse Mercator",ID["EPSG",9807]],
        PARAMETER[
            "Latitude of natural origin",
            0,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8801]
        ],
        PARAMETER[
            "Longitude of natural origin",
            97.5,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8802]
        ],
        PARAMETER[
            "Scale factor at natural origin",
            0.9999,
            SCALEUNIT["unity",1,ID["EPSG",9201]],
            ID["EPSG",8805]
        ],
        PARAMETER[
            "False easting",
            200000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            1500000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",17433]
    ],
    CS[Cartesian,2,ID["EPSG",4499]],
    AXIS["Easting (X)",east],
    AXIS["Northing (Y)",north],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",23831]
]

+proj=tmerc +lat_0=0 +lon_0=97.5 +k=0.9999 +x_0=200000 +y_0=1500000 +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs

proj4.defs("EPSG:23831", "+proj=tmerc +lat_0=0 +lon_0=97.5 +k=0.9999 +x_0=200000 +y_0=1500000 +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs");

{
  "type": "CoordinateReferenceSystem",
  "code": 23831,
  "name": "DGN95 / Indonesia TM-3 zone 47.1",
  "kind": "projected",
  "area": "Indonesia - 96°E to 99°E onshore",
  "unit": "metre",
  "bbox": [
    -1.81,
    96,
    5.42,
    99
  ],
  "proj4": "+proj=tmerc +lat_0=0 +lon_0=97.5 +k=0.9999 +x_0=200000 +y_0=1500000 +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs"
}

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (23831, 'EPSG', 23831, '+proj=tmerc +lat_0=0 +lon_0=97.5 +k=0.9999 +x_0=200000 +y_0=1500000 +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs +type=crs', 'PROJCS["DGN95 / Indonesia TM-3 zone 47.1",GEOGCS["DGN95",DATUM["Datum_Geodesi_Nasional_1995",SPHEROID["WGS 84",6378137,298.257223563],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4755"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",97.5],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",200000],PARAMETER["false_northing",1500000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","23831"]]');

PROJECTION
  "+proj=tmerc"
  "+lat_0=0"
  "+lon_0=97.5"
  "+k=0.9999"
  "+x_0=200000"
  "+y_0=1500000"
  "+ellps=WGS84"
  "+towgs84=0,0,0,0,0,0,0"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

23831=PROJCS["DGN95 / Indonesia TM-3 zone 47.1",GEOGCS["DGN95",DATUM["Datum_Geodesi_Nasional_1995",SPHEROID["WGS 84",6378137,298.257223563],TOWGS84[0,0,0,0,0,0,0]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4755"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",97.5],PARAMETER["scale_factor",0.9999],PARAMETER["false_easting",200000],PARAMETER["false_northing",1500000],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","23831"]]