DJ_MD9 comments on How small can an astronomical body (e.g. an asteroid) be before a human could no longer « stand on » it ?

What it would be like to interact with something the size of a grain of sand but with the density of a neutron star ?
▻http://www.reddit.com/r/askscience/comments/2ggcai/how_small_can_an_astronomical_body_eg_an_asteroid/ckj9xav?context=3