Bad idea, shutter speed was 1/4 apparently (https://news.ycombinator.com/item?id=47632457), even the small rotational inertia everything in zero gravity gets from a human "dropping" it would probably be enough to be annoying, you'd get a better shot holding it.

or sticky-tape it to the window.

d5 has an actual shutter yeah? not mirrorless? I think the shutter moving will spin the camera.