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

🇨🇦 C-FKHJ - Cessna Citation Excel - Chartright Air SDE561 - 5.2 mi away @ 42150 ft, heading SW at 479 mph. Spotted for first time! [12:53:34 PM CDT] #C01B28 #C_FKHJ #C56X #CHARTRIGHT #SDE561 #ADSB #ADSBbot