Orbiting between Mars and Jupiter, Ceres was first discovered and classified as a planet in 1801. In the 1850s, it was considered one of the largest of the little worlds in the asteroid belt. Astronomers re-classified Ceres as a dwarf planet in 2006. Oddly enough, it is believed that little Ceres, a tiny world that’s just shy of 600 miles across might had an ocean on it’s surface at one time.

Check out these links:

http://earthsky.org/space/ceres-ocean-2-new-studies-oct-2017

https://www.jpl.nasa.gov/spaceimages/details.php?id=PIA22083