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

🇺🇸 N17302 - Boeing 737MAX 8 - United Airlines UAL2017/UA2017 (LAS-IAH-IND) - 5.2 mi away @ 39575 ft, heading NNE at 528 mph. Spotted 3x before! [08:57:04 AM CDT] #A126C5 #N17302 #B38M #UNITED #UAL2017 #UA2017 #ADSB #ADSBbot