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

🇺🇸 N452UA - Airbus A320 232 - United Airlines UAL616/UA616, Denver (DEN) to Charlotte/Douglas (CLT) - 4.4 mi away @ 37075 ft, heading ESE at 566 mph. Spotted 22x before! [08:29:04 PM CDT] #A57B4D #N452UA #A320 #UNITED #UAL616 #UA616 #ADSB #ADSBbot