Ceres is a dwarf planet.
Ahuna Mons [ @ ` hu:n@_'mQnz ] is the largest mountain on the dwarf planet and asteroid Ceres . Ceres (dwarf planet) . However , on 2 September 2016 , NASA scientists released a paper in Science that claimed that a massive ice volcano called Ahuna Mons is the strongest evidence yet for the existence of these mysterious ice volcanoes . As the largest body in the asteroid belt , the dwarf planet Ceres ( formally `` 1 Ceres '' ) frequently appears in science fiction : Dawn (spacecraft) . It is currently in orbit about its second target , the dwarf planet Ceres .