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

🇨🇦 C-GKCP - Bombardier Challenger 605 - Canadian Pacific Railway CRR1 (HXD-BCT) - 4.5 mi away @ 38025 ft, heading NW at 473 mph. Spotted for first time! [10:28:42 PM CST] #C05F54 #C_GKCP #CL60 #RAILCAR #CRR1 #ADSB #ADSBbot