i know this may be a dumb question but what is the mass of that planet?
if it is anything approaching Jupiter mass, a sharp high school student should be able to measure the orbital perturbations by now.
if its albedo is anything less than darkest black we should be able to see it without aid.
if its albedo is that dark, we should be able to see the hole in the sky as it occludes stars in the background.
maybe its cause i was born in MO but 'show me' anything i can measure or quantify. I have a hard time with 'believe me cause i say so'. Oh well, if i'm wrong, just change my name to Thomas.