EPSG:11273

COORDINATEOPERATION["SRGI2013 epoch 2021.0 to INAGeoid2020 v2 height (1)",
    VERSION["BIG-Idn INAGeoid20v2e21"],
    SOURCECRS[
        GEOGCRS["SRGI2013 epoch 2021.0",
            DATUM["Sistem Referensi Geospasial Indonesia 2013 epoch 2021.0",
                ELLIPSOID["WGS 84",6378137,298.257223563,
                    LENGTHUNIT["metre",1]],
                ANCHOREPOCH[2021]],
            PRIMEM["Greenwich",0,
                ANGLEUNIT["degree",0.0174532925199433]],
            CS[ellipsoidal,3],
                AXIS["geodetic latitude (Lat)",north,
                    ORDER[1],
                    ANGLEUNIT["degree",0.0174532925199433]],
                AXIS["geodetic longitude (Lon)",east,
                    ORDER[2],
                    ANGLEUNIT["degree",0.0174532925199433]],
                AXIS["ellipsoidal height (h)",up,
                    ORDER[3],
                    LENGTHUNIT["metre",1]],
            ID["EPSG",11030]]],
    TARGETCRS[
        VERTCRS["INAGeoid2020 v2 height",
            VDATUM["Indonesian Geoid 2020 version 2"],
            CS[vertical,1],
                AXIS["gravity-related height (H)",up,
                    LENGTHUNIT["metre",1]],
            ID["EPSG",20036]]],
    METHOD["Geographic3D to GravityRelatedHeight (gtx)",
        ID["EPSG",9665]],
    PARAMETERFILE["Geoid (height correction) model file","INAGEOID2020v2.gtx"],
    OPERATIONACCURACY[0.1],
    USAGE[
        SCOPE["Derivation of gravity-related heights from GNSS observations."],
        AREA["Indonesia - onshore and offshore."],
        BBOX[-13.95,92.01,7.79,141.46]],
    ID["EPSG",11273],
    REMARK["Internal accuracy is between 0.05 and 0.3m on the large islands of Indonesia. For reversible alternative see SRGI2013 epoch 2021.0 to SRGI2013 epoch 2021.0 + INAGeoid2020 v2 height (1) (CT code 11275)."]]

proj4.defs("EPSG:11273","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=INAGEOID2020v2.gtx +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1");

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Transformation",
    "name": "SRGI2013 epoch 2021.0 to INAGeoid2020 v2 height (1)",
    "source_crs": {
        "type": "GeographicCRS",
        "name": "SRGI2013 epoch 2021.0",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Sistem Referensi Geospasial Indonesia 2013 epoch 2021.0",
            "anchor_epoch": 2021,
            "ellipsoid": {
                "name": "WGS 84",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257223563
            }
        },
        "coordinate_system": {
            "subtype": "ellipsoidal",
            "axis": [
                {
                    "name": "Geodetic latitude",
                    "abbreviation": "Lat",
                    "direction": "north",
                    "unit": "degree"
                },
                {
                    "name": "Geodetic longitude",
                    "abbreviation": "Lon",
                    "direction": "east",
                    "unit": "degree"
                },
                {
                    "name": "Ellipsoidal height",
                    "abbreviation": "h",
                    "direction": "up",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 11030
        },
        "remarks": "Static snapshot at epoch 2021.0 of SRGI2013 dynamic CRS (CRS code 9469). Geometric component of national geodetic control network (JKG). Replaces SRGI2013 epoch 2012.0 coordinates of INACORS GNSS reference stations from 2025-02-25T14:10Z."
    },
    "target_crs": {
        "type": "VerticalCRS",
        "name": "INAGeoid2020 v2 height",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "Indonesian Geoid 2020 version 2"
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Gravity-related height",
                    "abbreviation": "H",
                    "direction": "up",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 20036
        }
    },
    "method": {
        "name": "Geographic3D to GravityRelatedHeight (gtx)",
        "id": {
            "authority": "EPSG",
            "code": 9665
        }
    },
    "parameters": [
        {
            "name": "Geoid (height correction) model file",
            "value": "INAGEOID2020v2.gtx",
            "id": {
                "authority": "EPSG",
                "code": 8666
            }
        }
    ],
    "accuracy": "0.1",
    "scope": "Derivation of gravity-related heights from GNSS observations.",
    "area": "Indonesia - onshore and offshore.",
    "bbox": {
        "south_latitude": -13.95,
        "west_longitude": 92.01,
        "north_latitude": 7.79,
        "east_longitude": 141.46
    },
    "id": {
        "authority": "EPSG",
        "code": 11273
    },
    "remarks": "Internal accuracy is between 0.05 and 0.3m on the large islands of Indonesia. For reversible alternative see SRGI2013 epoch 2021.0 to SRGI2013 epoch 2021.0 + INAGeoid2020 v2 height (1) (CT code 11275)."
}

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=INAGEOID2020v2.gtx +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1">
	<Layer srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=INAGEOID2020v2.gtx +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1">
	</Layer>
</Map>

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 11273, 'EPSG', 11273, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +inv +proj=vgridshift +grids=INAGEOID2020v2.gtx +multiplier=1 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');