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

🇺🇸 N540PA - Gates Learjet 35 A - Phoenix Air Group GRB247 - 5.1 mi away @ 41950 ft, heading SE at 590 mph. Spotted once before! [02:06:21 PM CST] #A6D932 #N540PA #LJ35 #GRAY_BIRD #GRB247 #ADSB #ADSBbot