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

🇺🇸 N905CK - Gates Learjet 36 - Kalitta Charters KFS33 - 4.5 mi away @ 37125 ft, heading NE at 576 mph. Spotted for first time! [06:44:43 AM CST] #AC81FB #N905CK #LJ36 #KALITTA #KFS33 #ADSB #ADSBbot