Map of the St. Louis area showing the position and track of the aircraft described in the post.

🇺🇸 N718CF - Gulfstream Aerospace G200 - Priester Aviation N718CF - 5.3 mi away @ 42000 ft, heading SW at 558 mph. Spotted for first time! [03:35:44 PM CDT] #A999FD #N718CF #G200 #PRIESTER #N718CF #ADSB #ADSBbot