EPSG:2342 — Xian 1980 / Gauss-Kruger CM 99E

PROJCRS[
    "Xian 1980 / Gauss-Kruger CM 99E",
    BASEGEOGCRS[
        "Xian 1980",
        DATUM[
            "Xian 1980",
            ELLIPSOID[
                "IAG 1975",
                6378140,
                298.257,
                LENGTHUNIT["metre",1,ID["EPSG",9001]],
                ID["EPSG",7049]
            ],
            ID["EPSG",6610]
        ],
        ID["EPSG",4610]
    ],
    CONVERSION[
        "Gauss-Kruger CM 99E",
        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",
            99,
            ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9102]],
            ID["EPSG",8802]
        ],
        PARAMETER[
            "Scale factor at natural origin",
            1,
            SCALEUNIT["unity",1,ID["EPSG",9201]],
            ID["EPSG",8805]
        ],
        PARAMETER[
            "False easting",
            500000,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8806]
        ],
        PARAMETER[
            "False northing",
            0,
            LENGTHUNIT["metre",1,ID["EPSG",9001]],
            ID["EPSG",8807]
        ],
        ID["EPSG",16317]
    ],
    CS[Cartesian,2,ID["EPSG",4530]],
    AXIS["Northing (X)",north],
    AXIS["Easting (Y)",east],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",2342]
]

+proj=tmerc +lat_0=0 +lon_0=99 +k=1 +x_0=500000 +y_0=0 +ellps=IAU76 +units=m +no_defs +type=crs

proj4.defs("EPSG:2342", "+proj=tmerc +lat_0=0 +lon_0=99 +k=1 +x_0=500000 +y_0=0 +ellps=IAU76 +units=m +no_defs +type=crs");

{
  "type": "CoordinateReferenceSystem",
  "code": 2342,
  "name": "Xian 1980 / Gauss-Kruger CM 99E",
  "kind": "projected",
  "area": "China - 96°E to 102°E",
  "unit": "metre",
  "bbox": [
    21.13,
    96,
    43.18,
    102.01
  ],
  "proj4": "+proj=tmerc +lat_0=0 +lon_0=99 +k=1 +x_0=500000 +y_0=0 +ellps=IAU76 +units=m +no_defs +type=crs"
}

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (2342, 'EPSG', 2342, '+proj=tmerc +lat_0=0 +lon_0=99 +k=1 +x_0=500000 +y_0=0 +ellps=IAU76 +units=m +no_defs +type=crs', 'PROJCS["Xian 1980 / Gauss-Kruger CM 99E",GEOGCS["Xian 1980",DATUM["Xian_1980",SPHEROID["IAG 1975",6378140,298.257,AUTHORITY["EPSG","7049"]],AUTHORITY["EPSG","6610"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4610"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",99],PARAMETER["scale_factor",1],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","2342"]]');

PROJECTION
  "+proj=tmerc"
  "+lat_0=0"
  "+lon_0=99"
  "+k=1"
  "+x_0=500000"
  "+y_0=0"
  "+ellps=IAU76"
  "+units=m"
  "+no_defs"
  "+type=crs"
END

2342=PROJCS["Xian 1980 / Gauss-Kruger CM 99E",GEOGCS["Xian 1980",DATUM["Xian_1980",SPHEROID["IAG 1975",6378140,298.257,AUTHORITY["EPSG","7049"]],AUTHORITY["EPSG","6610"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4610"]],PROJECTION["Transverse_Mercator"],PARAMETER["latitude_of_origin",0],PARAMETER["central_meridian",99],PARAMETER["scale_factor",1],PARAMETER["false_easting",500000],PARAMETER["false_northing",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AUTHORITY["EPSG","2342"]]