WGS 1984 UPS South (E-N) - EPSG:5042

WKT

PROJCS["WGS_1984_UPS_South_(E-N)", 
	GEOGCS["GCS_WGS_1984", 
		DATUM["D_WGS_1984", 
			SPHEROID["WGS_1984", 6378137.0, 298.257223563]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Polar_Stereographic_Variant_A"], 
	PARAMETER["False_Easting", 2000000.0], 
	PARAMETER["False_Northing", 2000000.0], 
	PARAMETER["Longitude_Of_Origin", 0.0], 
	PARAMETER["Scale_Factor", 0.994], 
	PARAMETER["Latitude_Of_Origin", -90.0], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["WGS_1984_UPS_South_(E-N)", 
	BASEGEOGCRS["GCS_WGS_1984", 
		DYNAMIC[
			FRAMEEPOCH[1990.5], 
			MODEL["AM0-2"]], 
		DATUM["D_WGS_1984", 
			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["Polar_Stereographic_Variant_A", 
		METHOD["Polar_Stereographic_Variant_A"], 
		PARAMETER["False_Easting", 2000000.0], 
		PARAMETER["False_Northing", 2000000.0], 
		PARAMETER["Longitude_Of_Origin", 0.0], 
		PARAMETER["Scale_Factor", 0.994], 
		PARAMETER["Latitude_Of_Origin", -90.0]], 
	CS[Cartesian, 2], 
	AXIS["Easting (X)", east, 
		ORDER[1]], 
	AXIS["Northing (Y)", north, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "5042"]]

Data from @esri/proj-codes

{
  "wkid": 5042,
  "latestWkid": 5042,
  "gcsWkid": 4326,
  "macro": "PE_PCS_WGS_1984_UPS_SOUTH_EN",
  "name": "WGS_1984_UPS_South_(E-N)",
  "wkt": "PROJCS[\"WGS_1984_UPS_South_(E-N)\",GEOGCS[\"GCS_WGS_1984\",DATUM[\"D_WGS_1984\",SPHEROID[\"WGS_1984\",6378137.0,298.257223563]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Polar_Stereographic_Variant_A\"],PARAMETER[\"False_Easting\",2000000.0],PARAMETER[\"False_Northing\",2000000.0],PARAMETER[\"Longitude_Of_Origin\",0.0],PARAMETER[\"Scale_Factor\",0.994],PARAMETER[\"Latitude_Of_Origin\",-90.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"WGS_1984_UPS_South_(E-N)\",BASEGEOGCRS[\"GCS_WGS_1984\",DYNAMIC[FRAMEEPOCH[1990.5],MODEL[\"AM0-2\"]],DATUM[\"D_WGS_1984\",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[\"Polar_Stereographic_Variant_A\",METHOD[\"Polar_Stereographic_Variant_A\"],PARAMETER[\"False_Easting\",2000000.0],PARAMETER[\"False_Northing\",2000000.0],PARAMETER[\"Longitude_Of_Origin\",0.0],PARAMETER[\"Scale_Factor\",0.994],PARAMETER[\"Latitude_Of_Origin\",-90.0]],CS[Cartesian,2],AXIS[\"Easting (X)\",east,ORDER[1]],AXIS[\"Northing (Y)\",north,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"5042\"]]",
  "description": "WGS 1984 UPS South (E-N)",
  "authority": "EPSG",
  "version": "7.4.6(13.1.0)",
  "deprecated": "no",
  "areaname": "World - S hemisphere - south of 60~S",
  "extent": {
    "slat": -90,
    "nlat": -60,
    "llon": -180,
    "rlon": 180
  }
}