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

🇺🇸 N17513 - Embraer ERJ-135 LR - Contour Aviation VTE3083/LF3083, Cape Girardeau Regional (CGI) to Chicago O'Hare (ORD) - 3.6 mi away @ 28675 ft, heading NNE at 529 mph. Spotted for first time! [09:46:09 AM CDT] #A12E57 #N17513 #E135 #VOLUNTEER #VTE3083 #LF3083 #ADSB #ADSBbot