Actually, I do believe that the object we've been drawn to by the OP is a window smudge, and you can all see it for yourself.
If you would be so kind as to follow this link to the original photo, I will walk you through it.
antwrp.gsfc.nasa.gov...
Alright, so you can see the photo, and you can clearly see the photo anomaly in the upper right area of the upper left port hole. Just like in the
picture shown by the OP and other subsequent posters.
Now click on the photo so that it's the only thing in your window. Or follow this link if you'd rather.
antwrp.gsfc.nasa.gov...
If you look in the top corner where the event is you should see this.
[atsimg]http://files.abovetopsecret.com/images/member/a686040666bb.jpg[/atsimg]
Now if you look at the spot where we had the anomaly, you'll see a wispy line. This is what the camera picked up, and is more then likely a smudge,
but it could be anything, I'm no expert. What ever it is, it's rather fortuitous that we saw it though, because it lets us see the small dot next to
it.
Another post pointed out a small black dot over some of the clouds in the lower part of that porthole. These two, I think are related. As shown
here
[atsimg]http://files.abovetopsecret.com/images/member/a21729ed48ac.jpg[/atsimg]
I believe it's a shadow of whatever the dot is I've circled.
Now forgive my picture quality, but if you follow the links provided, you see the clearer and better pictures and will be able to pin point these
objects yourself.
So what do you thing? It seems kinda low orbit for a satellite, but once again, I'm no expert.