List of solar system objects by planetary discriminant

This is a list of solar system's planetary bodies orbiting the Sun by planetary discriminant, in decreasing order, where the planetary discriminant μ is a term introduced by Steven Soter as the ratio between the mass of the body and the total mass of the other non-resonating and non-satellite bodies in the same orbital zone, in the sense of Soter. Also listed is the Stern-Levinson parameter Λ, the square of the mass over the orbital period, normalized to the Earth values(Λ/Λ_E). The planetary discriminant is related to the question of defining what a planet is.

Rank	Name	Image	Stern-Levinson parameter Λ/ΛE;	Planetary discriminant μ	Mass (kg)	Type of object
1	Earth		1.00	1.7×106	(5.9736×1024 kg)	3rd planet
2	Venus		1.08	1.35×106	(4.8685×1024 kg)	2nd planet
3	Jupiter		8510	6.25×105	(1.899×1027 kg)	5th planet
4	Saturn		308	1.9×105	(5.6846×1026 kg)	6th planet
5	Mars		0.0061	1.8×105	(6.4185×1023 kg)	4th planet
6	Mercury		0.0126	9.1×104	(3.302×1023 kg)	1st planet
7	Uranus		2.51	2.9×104	(8.6832×1025 kg)	7th planet
8	Neptune		1.79	2.4×104	(1.0243×1026 kg)	8th planet
9	Ceres		8.7×10−9	0.33	9.5×1020 kg	1st dwarf planet
10	Eris		3.5×10−8	0.10	(1.5×1022 kg)	3rd dwarf planet
11	Pluto		1.95×10−8	0.077	(1.29×1022 ± 10% kg)	2nd dwarf planet

See also

• List of planetary bodies
• List of solar system objects by mass
• List of solar system objects by radius
• List of solar system objects
• List of noteworthy asteroids
• Definition of planet
• 2006 redefinition of planet
• Mesoplanet
• Clearing the neighbourhood

References/Notes

• Soter, Steven (2006-08-16). What is a Planet? (PDF). Retrieved on 2006-08-24. submitted to The Astronomical Journal, 16 August 2006