What place is 39 degrees north latitude and 9 degrees west longitude?

None is. That point is out in the middle of Lake Michigan, a little closer to the Michigan

shore than to the Illinois side.

23.8 miles east of that point is the Michigan shore, I-94, and Mere State Park.

33.7 miles west of that point is the Illinois shore, between Dumbach Hall and the

Michael Cudahy Science building on Chicago's Loyola U. campus.