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

🇺🇸 N47275 - Boeing 737MAX 8 - United Airlines UAL1048/UA1048 (PHL-SFO-SNA) - 5.4 mi away @ 34975 ft, heading W at 497 mph. Spotted 9x before! [07:31:19 AM CST] #A5CBF3 #N47275 #B38M #UNITED #UAL1048 #UA1048 #ADSB #ADSBbot