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

🇺🇸 N798UA - Boeing 777 222ER - United Airlines UAL1722/UA1722 (KOA-SFO-EWR) - 4.5 mi away @ 38975 ft, heading ENE at 605 mph. Spotted 6x before! [03:54:16 AM CDT] #AAD780 #N798UA #B772 #UNITED #UAL1722 #UA1722 #ADSB #ADSBbot