the iau therefore resolves that planets and other bodies in our solar system, except satellites, be defined into three distinct categories in the following way:
(1) a "planet"1 is a celestial body that: (a) is in orbit around the sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit.
(2) a "dwarf planet" is a celestial body that: (a) is in orbit around the sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape2, (c) has not cleared the neighbourhood around its orbit, and (d) is not a satellite.
(3) all other objects3 except satellites orbiting the sun shall be referred to collectively as "small solar system bodies".
Footnotes:
1 the eight planets are: mercury, venus, earth, mars, jupiter, saturn, uranus, and neptune.
2 an iau process will be established to assign borderline objects into either "dwarf planet" and other categories.
3 these currently include most of the solar system asteroids, most trans-neptunian objects (tnos), comets, and other small bodies.