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

🇺🇸 N77530 - Boeing 737NG 824/W - United Airlines UAL529/UA529 (LAS-DEN-STL) - 3.3 mi away @ 7650 ft, heading E at 371 mph. Spotted 17x before! [01:06:25 AM CST] #AA7E74 #N77530 #B738 #UNITED #UAL529 #UA529 #Landing #ADSB #ADSBbot