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

🇺🇸 N26232 - Boeing 737NG 824/W - United Airlines UAL1593/UA1593, Denver (DEN) to Buffalo Niagara (BUF) - 4.8 mi away @ 39100 ft, heading ENE at 551 mph. Spotted 15x before! [09:54:13 PM CDT] #A28947 #N26232 #B738 #UNITED #UAL1593 #UA1593 #ADSB #ADSBbot