 Now, for something to see, dwarf planet Ceres, this may best be seen by July the 5th when the moon is not in the sky. It's the largest known asteroid, George. It'll be in the star fields of Sagittarius. The object is 584 miles in diameter. It'll be 175 million miles away from us in space. Small telescopes and binoculars. But get a load of this. There's more water, other than the Earth, on any other object in the solar system, we believe.