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

🇺🇸 N88301 - Embraer EMB-175 LR - United Express ASH4074/YV4074, George Bush Intcntl/Houston (IAH) to General Mitchell (MKE) - 4.3 mi away @ 35400 ft, heading NNE at 532 mph. Spotted 23x before. [09:51:28 PM CST] #AC2B6C #N88301 #E75L #AIR_SHUTTLE #ASH4074 #YV4074 #autopilot #ADSB #ADSBbot