Very interesting video! I wonder if this is real? If it is, then it is a really extraordinary discovery because it is most definitely not a natural formation.
The object was seen on the Itokawa Asteroid, which was discovered in 1998 by the LINEAR project. In 2003 it was officially named after a Japenese Rocket scientist, Hideo Itokawa.
It is approximately 60 Metres in Length and 30 Metres in width and is said to have been formed by two objects that gravitated towards eachother and amalgamated to form a single structure.
The object does look a bit like the mysterious space balls which have fallen from the sky all over the world which some believe are fuel tanks from rockets, the only exception being the 3 rods that look like antennas.