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

🇺🇸 N7826B - Boeing 737NG 79P/W - Southwest Airlines SWA4020/WN4020, Denver (DEN) to Richmond (RIC) - 4.7 mi away @ 38975 ft, heading E at 573 mph. Spotted 58x before! [12:17:12 AM CDT] #AA9B20 #N7826B #B737 #SOUTHWEST #SWA4020 #WN4020 #ADSB #ADSBbot