Dwarf planet is the name used to classify some objects in the solar system. This definition was made on August 24, 2006 by the International Astronomical Union (IAU), and can be described as; "a dwarf planet is a body orbiting the Sun that is big enough to round itself by its own gravity, but has not cleared its orbital path of other rival bodies". At the same meeting the IAU also defined the term planet for the first time. Some astronomers think that the term "dwarf planet" is too confusing and needs to be changed.