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

🇺🇸 N16703 - Boeing 737NG 724/W - United Airlines UAL1517/UA1517 (SFO-DFW-EWR) - 8.8 mi away @ 40975 ft, heading ENE at 547 mph. Spotted 12x before! [07:22:33 PM CDT] #A10E23 #N16703 #B737 #UNITED #UAL1517 #UA1517 #ADSB #ADSBbot