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

🇺🇸 N723NK - AIRBUS A321neo - WILMINGTON TRUST CO TRUSTEE NKS105/NK105, Cancun (CUN) to Chicago O'Hare (ORD) - 4.5 mi away @ 36025 ft, heading N at 485 mph. Spotted for first time! [02:17:09 PM CST] #A9AFE7 #N723NK #A21N #NKS105 #NK105 #ADSB #ADSBbot