No good feedback on this, so not a good practice target, however...
Describe the object Jon saw from a plane, flight DL6090 flying into JFK around 6:00pm, 16th October 2011.
Describe the object, its movement, purpose and manufacture.
I saw a spherical object in the air above the ground, it was a light gray or brown colour, and either had markings or structural elements in a different shade. There were no lights, maybe a faint glow. I can't be sure of the size, it was not large. I can’t be sure if it was moving itself as the plane flew past it. I only saw it for a few seconds.
Found this, and the first image looks like it could be the same thing: