By: Ayla Khan
A dwarf planet is a celestial body representing a small planet, but lacks certain articles in order to be a planet. The IAU classified this definition as the official definition for a dwarf planet.
Why Are They Responsible For The Classification Of Planetary Bodies?
The IAU is responsible for the naming and classification of planets and their satellites. They have had this responsibility since the early 1900's when the IAU had first been founded in 1919.
IAU Classifies :
* Planet- Celestial body moving in an elliptical orbit around a star.
*Dwarf Planets- A celestial body representing a small planet, but lacks certain things necessary to be a planet.
*A Small Solar System Body- All objects orbiting the Sun that are too small to be a planet or a dwarf planet.
The IAU's view of our solar system changed on August 30, 1992 with the discovery by David Jewitt and Jane Luu when they discovered the trans- Neptunian region. Anything beyond the planet Neptune was classified as a Trans- Neptunian Object.