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

🇺🇸 N64844 - Boeing 737NG 924ER/W - United Airlines UAL8223/UA8223 (IAD-LAX-ORD) - 4.0 mi away @ 34050 ft, heading WSW at 499 mph. Spotted 13x before! [11:21:39 PM CDT] #A885F4 #N64844 #B739 #UNITED #UAL8223 #UA8223 #ADSB #ADSBbot