Caption: asteroid 162173 Ryugu seen in rotation (rotation period 7.627(7) h) assembled from images by the Hayabusa2 (2014--2020) spacecraft taken 2018 Jul10. The images were taken by the Hayabusa2's Optical Navigation Camera - Telescopic (ONC-T) at a distance of probably 20 kilometers (12 miles). Ryugu is the 23rd minor planet studied by a spacecraft in situ and is the target of the second sample-return mission to an asteroid (i.e., Hayabusa2's sample-return mission).
Features:
Rubble pile astro-bodies are probably only marginally gravitationally-bound by self-gravity.