Clearing the neighbourhood

The planetary discriminant was introduced in connection with the question of the definition of planet Steven Soter. It indicates the ratio of the mass of a body located in the solar system to the mass of the other objects in its orbit, provided that this is no moons or resonant orbiting celestial bodies. The following table contains the values ​​of the planetary discriminant for all currently known planets and nearly all dwarf planets. According to the definition of the International Astronomical Union ( IAU) in 2006 which is currently eight planets of the solar system have a value of μ greater than one, the dwarf planet has a value less than one. Furthermore, it is also the star - Levison parameter is specified. It is the mass ( in Earth masses ) of a body to the square divided by its orbital period (in years).