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

🇺🇸 N87513 - Boeing 737NG 824/W - United Airlines UAL1639/UA1639, George Bush Intcntl/Houston (IAH) to Laguardia (LGA) - 5.3 mi away @ 36650 ft, heading NE at 596 mph. Spotted 13x before! [07:38:19 PM CDT] #AC0B80 #N87513 #B738 #UNITED #UAL1639 #UA1639 #ADSB #ADSBbot