The past quality

The initial write proposal into definition of an environment are argued strenuously by astronomers in the 2006 IAU General Assembly when you look at the Prague and you may yet another type slowly took contour. The fresh new type try way more appropriate to many and you may was set on people in the IAU for a ballot within this new Closing Service towards the . By the end of your own Prague Standard Construction, the users voted your resolution B5 towards the definition of an earth regarding Solar system could be as follows:

A celestial human anatomy one (a) is in orbit within Sunlight, (b) keeps enough mass for its notice-gravity to conquer rigid body pushes as a result it takes on good hydrostatic balance (nearly round) profile, and (c) possess eliminated the latest neighbourhood up to their 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.