Your email address is safe with us. View our Privacy policy.
Pluto officially becomes a plutoid
The action came nearly two years after the IAU introduced the category of dwarf planets, demoting Pluto from being categorized as a planet.
The IAU, with headquarters in Paris, defines plutoids as being celestial bodies in orbit around the sun at a distance greater than that of Neptune that have sufficient mass for their self-gravity to overcome rigid body forces so that they assume a hydrostatic equilibrium (nearly-spherical) shape, and that have not cleared the neighborhood around their orbit.
The two known and named plutoids are Pluto and Eris. It is expected that more plutoids will be named as new discoveries are made.
The IAU has been responsible for naming planetary bodies and their satellites since the early 1900s.
Copyright 2008 by United Press International
This news arrived on: 06/16/2008
Printer Friendly Version | Send this page to a friend | Post Comment
Rate This Story:
Great - 5 - 4 - 3 - 2 - 1 - Bad
Posted Comments:
Comment archive | Comment FAQ's
 |
 |
View Science & Technology ezine stories by date or visit the complete archive |
The ArcaMax Politics channel is one of 70 content categories offered by ArcaMax Publishing on this ... |
Body Mass
