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

🇺🇸 N37263 - Boeing 737NG 824/W - United Airlines UAL312K/UA312K (DSM-ORD-AUS) - 4.6 mi away @ 38225 ft, heading SW at 484 mph. Spotted 19x before. [09:10:45 PM CDT] #A43E7F #N37263 #B738 #UNITED #UAL312K #UA312K #ADSB #ADSBbot