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

🇺🇸 N929XJ - Bombardier CRJ 900 LR NG - Delta Connection EDV4821/9E4821 - 3.5 mi away @ 15450 ft, heading NW at 424 mph. Spotted 3x before! [08:22:15 PM CDT] #ACE1AF #N929XJ #CRJ9 #ENDEAVOR #EDV4821 #9E4821 #ADSB #ADSBbot