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

🇺🇸 N570GJ - Bombardier CRJ 700 - United Express SKW5336/OO5336, Memphis (MEM) to Chicago O'Hare (ORD) - 4.2 mi away @ 36100 ft, heading NNE at 502 mph. Spotted once before! [07:07:14 PM CDT] #A74F08 #N570GJ #CRJ7 #LINDBERGH #SKW5336 #OO5336 #ADSB #ADSBbot