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

🇺🇸 N56859 - Boeing 757 324/W - United Airlines UAL2475/UA2475, Orlando (MCO) to Chicago O'Hare (ORD) - 4.5 mi away @ 36075 ft, heading NNE at 579 mph. Spotted 3x before! [01:41:17 PM CDT] #A747CB #N56859 #B753 #UNITED #UAL2475 #UA2475 #ADSB #ADSBbot