POSGAR 2007 CABA 2019 - EPSG:9498

WKT

PROJCS["POSGAR_2007_CABA_2019", 
	GEOGCS["GCS_POSGAR_2007", 
		DATUM["D_POSGAR_2007", 
			SPHEROID["WGS_1984", 6378137.0, 298.257223563]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Transverse_Mercator"], 
	PARAMETER["False_Easting", 20000.0], 
	PARAMETER["False_Northing", 70000.0], 
	PARAMETER["Central_Meridian", -58.46330833333335], 
	PARAMETER["Scale_Factor", 1.0], 
	PARAMETER["Latitude_Of_Origin", -34.62926666666666], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["POSGAR_2007_CABA_2019", 
	BASEGEOGCRS["GCS_POSGAR_2007", 
		DATUM["D_POSGAR_2007", 
			ELLIPSOID["WGS_1984", 6378137.0, 298.257223563]], 
		PRIMEM["Greenwich", 0.0], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	CONVERSION["Transverse_Mercator", 
		METHOD["Transverse_Mercator"], 
		PARAMETER["False_Easting", 20000.0], 
		PARAMETER["False_Northing", 70000.0], 
		PARAMETER["Central_Meridian", -58.46330833333335], 
		PARAMETER["Scale_Factor", 1.0], 
		PARAMETER["Latitude_Of_Origin", -34.62926666666666]], 
	CS[Cartesian, 2], 
	AXIS["Northing (Y)", north, 
		ORDER[1]], 
	AXIS["Easting (X)", east, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "9498"]]

Data from @esri/proj-codes

{
  "wkid": 9498,
  "latestWkid": 9498,
  "gcsWkid": 5340,
  "macro": "PE_PCS_POSGAR_2007_CABA_2019",
  "name": "POSGAR_2007_CABA_2019",
  "wkt": "PROJCS[\"POSGAR_2007_CABA_2019\",GEOGCS[\"GCS_POSGAR_2007\",DATUM[\"D_POSGAR_2007\",SPHEROID[\"WGS_1984\",6378137.0,298.257223563]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",20000.0],PARAMETER[\"False_Northing\",70000.0],PARAMETER[\"Central_Meridian\",-58.46330833333335],PARAMETER[\"Scale_Factor\",1.0],PARAMETER[\"Latitude_Of_Origin\",-34.62926666666666],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"POSGAR_2007_CABA_2019\",BASEGEOGCRS[\"GCS_POSGAR_2007\",DATUM[\"D_POSGAR_2007\",ELLIPSOID[\"WGS_1984\",6378137.0,298.257223563]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],CONVERSION[\"Transverse_Mercator\",METHOD[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",20000.0],PARAMETER[\"False_Northing\",70000.0],PARAMETER[\"Central_Meridian\",-58.46330833333335],PARAMETER[\"Scale_Factor\",1.0],PARAMETER[\"Latitude_Of_Origin\",-34.62926666666666]],CS[Cartesian,2],AXIS[\"Northing (Y)\",north,ORDER[1]],AXIS[\"Easting (X)\",east,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"9498\"]]",
  "description": "POSGAR 2007 CABA 2019",
  "authority": "EPSG",
  "version": "10.006(12.8.0)",
  "deprecated": "no",
  "areaname": "Argentina - Buenos Aires city",
  "extent": {
    "slat": -34.71,
    "nlat": -34.5,
    "llon": -58.54,
    "rlon": -58.29
  }
}