South Pole Orthographic - ESRI:102037

WKT

PROJCS["South_Pole_Orthographic", 
	GEOGCS["GCS_WGS_1984", 
		DATUM["D_WGS_1984", 
			SPHEROID["WGS_1984", 6378137.0, 298.257223563]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Orthographic"], 
	PARAMETER["False_Easting", 0.0], 
	PARAMETER["False_Northing", 0.0], 
	PARAMETER["Longitude_Of_Center", 0.0], 
	PARAMETER["Latitude_Of_Center", -90.0], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["South_Pole_Orthographic", 
	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["Orthographic", 
		METHOD["Orthographic"], 
		PARAMETER["False_Easting", 0.0], 
		PARAMETER["False_Northing", 0.0], 
		PARAMETER["Longitude_Of_Center", 0.0], 
		PARAMETER["Latitude_Of_Center", -90.0]], 
	CS[Cartesian, 2], 
	AXIS["Easting (X)", east, 
		ORDER[1]], 
	AXIS["Northing (Y)", north, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["Esri", "102037"]]

Data from @esri/proj-codes

{
  "wkid": 102037,
  "latestWkid": 102037,
  "gcsWkid": 4326,
  "macro": "PE_PCS_WGS_1984_S_POLE_ORTHOGRAPHIC",
  "name": "South_Pole_Orthographic",
  "wkt": "PROJCS[\"South_Pole_Orthographic\",GEOGCS[\"GCS_WGS_1984\",DATUM[\"D_WGS_1984\",SPHEROID[\"WGS_1984\",6378137.0,298.257223563]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Orthographic\"],PARAMETER[\"False_Easting\",0.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Longitude_Of_Center\",0.0],PARAMETER[\"Latitude_Of_Center\",-90.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"South_Pole_Orthographic\",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[\"Orthographic\",METHOD[\"Orthographic\"],PARAMETER[\"False_Easting\",0.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Longitude_Of_Center\",0.0],PARAMETER[\"Latitude_Of_Center\",-90.0]],CS[Cartesian,2],AXIS[\"Easting (X)\",east,ORDER[1]],AXIS[\"Northing (Y)\",north,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"Esri\",\"102037\"]]",
  "description": "South Pole Orthographic",
  "authority": "Esri",
  "version": "8.1.1",
  "deprecated": "no",
  "areaname": "World - south of 0~N",
  "extent": {
    "slat": -90,
    "nlat": 0,
    "llon": -180,
    "rlon": 180
  }
}