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

🇺🇸 N17126 - Boeing 757 224/W - United Airlines UAL731/UA731, Denver (DEN) to Newark Liberty (EWR) - 4.7 mi away @ 36100 ft, heading ESE at 602 mph. Spotted once before! [07:02:15 PM CDT] #A11FA1 #N17126 #B752 #UNITED #UAL731 #UA731 #ADSB #ADSBbot