Word: planetoid
An asteroid of any size Example: 1979 Tsunami generation by pelagic planetoid impact
An asteroid-like body in an orbit beyond the asteroid belt, such as a centaur or Kuiper belt object
A larger, planetary, body in orbit around the Sun, such as Vesta or (candidate) dwarf planets such Eris or Sedna Example: 1991 Optimal trajectories for an ion driven spacecraft from earth to the planetoid Vesta
A dwarf planet
You can find a list of possible crossword clues for PLANETOID below.