You are here


The largest known asteroid, Ceres is less than 600 miles (975 km) in diameter, and orbits roughly 260 million miles (420 million km) from the Sun. Italian astronomer Giuseppe Piazzi discovered Ceres in 1801. Since it was the first asteroid ever discovered, it also carries the designation “1 Ceres.” In 2006, astronomers also classified Ceres as a dwarf planet.



Asteroids February 19, 2016

Featured Images

True-color view of Ceres

Ceres at Opposition February 1, 2018

The layered structure of Ceres

Icy Layers May 2, 2017

Dawn image of bright deposits on Ceres

Salty Ceres April 11, 2016

Dawn images of north pole of Ceres

Over the Top April 17, 2015

A full rotation of Ceres as seen by the Dawn mission

Final Approach March 3, 2015

Dawn image of mysterious bright spots on Ceres, February 19, 2015

Bright Mysteries February 26, 2015

Dawn image of Ceres, January 25, 2015

Getting Closer January 28, 2015

Three dwarf planets shown to scale with Earth and Moon

Dwarf Planets January 5, 2015

Radio Programs

Hospitable Ceres? A surprisingly hospitable asteroid September 29, 2017

Ceres Watery features on a giant asteroid May 2, 2017

Salty Ceres The “salty” surface of an asteroid April 11, 2016