Is circumnavigation possible on Phobos or Deimos?

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Circumnavigation on Mars' moons, Phobos and Deimos, is indeed possible despite their irregular shapes. An astronaut can walk around the surface and return to the starting point, similar to how one can circumnavigate Earth. The lack of spherical mass does not prevent this ability. The concept of circumnavigation applies to any astronomical body, regardless of its form. Therefore, walking around either moon is feasible.
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I know that Mar's moon's, Phobos and Deimos, do not have enough mass to be round, but does this mean that if an astronaut was on the surface of either of the two, they could not circumnavigate it? Is it possible to circumnavigate an astronomical body that is not completely spherical?
 
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Of course. Just start walking until you go all the way around the moon's surface and are back where you started.
 
megamind said:
I know that Mar's moon's, Phobos and Deimos, do not have enough mass to be round, but does this mean that if an astronaut was on the surface of either of the two, they could not circumnavigate it? Is it possible to circumnavigate an astronomical body that is not completely spherical?

It definitely is possible. You can circumnavigate the Earth and it is not completely spherical.
 
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