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

🇺🇸 N77576 - Boeing 737MAX 9 - United Airlines UAL2089/UA2089, Luis Munoz Marin (SJU) to Chicago O'Hare (ORD) - 4.1 mi away @ 35050 ft, heading NW at 501 mph. Spotted 6x before! [10:59:56 AM CDT] #AA7F06 #N77576 #B39M #UNITED #UAL2089 #UA2089 #ADSB #ADSBbot