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1 Ceres

Minor Planet Designation1 Ceres
Asteroid GroupMain Asteroid Belt
Orbital Period4.6 years
Distance from the SunSemi-Major Axis: 414,010,000 km (2.77 AU)
Perihelion: 382,619,000 km (2.56 AU)
Aphelion: 445,401,000 km (2.98 AU)
Diameter (Mean)924.4 kilometres
NotesThe rocky surface of Ceres is heavily cratered, with a small number of distinctive bright spots standing out against the darker surface rocks.
Ahuna Mons

The relatively bright rise shown in this view of Ceres is Ahuna Mons, a cryovolcano rising nearly five kilometres above the surrounding terrain. This is the only such feature to be found on the asteroid.

The largest of the asteroids by far, Ceres' diameter is nonetheless less than 1,000 km, about a third of the diameter of Pluto.


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