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

🇺🇸 N77535 - Boeing 737NG 824/W - United Airlines UAL464/UA464 (IND-DEN-SNA) - 5.5 mi away @ 37725 ft, heading WSW at 502 mph. Spotted 17x before! [05:56:31 PM CDT] #AA7E79 #N77535 #B738 #UNITED #UAL464 #UA464 #ADSB #ADSBbot