The past solution
The initial draft proposition into the definition of a world is debated strenuously from the astronomers in the 2006 IAU General System from inside the Prague and a unique type more sluggish took contour. The latest type was a lot more appropriate to the majority of and you can are set towards people in this new IAU to have a ballot in the the new Closure Service into the . By the end of one's Prague General Set up, the people voted your solution B5 toward concept of an earth from the Solar system is below:
A celestial human body that (a) is within orbit around the Sunlight, (b) have sufficient bulk for the self-gravity to overcome rigid-body forces so it takes on an excellent hydrostatic balance (almost bullet) contour, and you can (c) has actually eliminated the latest area doing its orbit.
The IAU Resolution means that the Solar System officially consists of eight planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. A new distinct class of objects called dwarf planets was also decided on. It was agreed that planets and dwarf planets are two distinct classes of objects. The first members of the dwarf planet category are Ceres, Pluto and Eris, formerly known as 2003 UB313. Eris was named after the IAU General Assembly in 2006 (read more) Eris is the Greek god of discord and strife, a name which the discoverer Mike Brown found fitting in the light of the academic commotion that followed its discovery.
The newest dwarf planet Pluto try accepted since the an essential model of a different class of Trans-Neptunian Objects. The IAU has given a special denomination for these stuff: plutoids.