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

🇺🇸 N17564 - Boeing 737MAX 9 - United Airlines UAL8140/UA8140 (PSP-SFO-TPA) - 4.1 mi away @ 36500 ft, heading E at 654 mph. Spotted 10x before. [02:19:00 AM CST] #A12F07 #N17564 #B39M #UNITED #UAL8140 #UA8140 #ADSB #ADSBbot