re: Missing piece of Hyperion or foreground asteroid?
I'm not going to assume that your post has anything to do with my post in the link below this one, however if it does.
I was referring to the book Hyperion (A hugo award winning novel written by Dan Simmons) I occasionally plug one of the books I'm reading in my posts if I like it.
Like the Ring World series by Larry Niven.
Actually it was a poster here that suggested Larry Niven's books that got me started.
Hence the pen name Peersa from the book "A World out of time."
I apologize if this post seems unnecessarily unrelated to yours.