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The number of dwarf planets in the Solar System is unknown. Estimates have run as high as 200 in the Kuiper belt [1] and over 10,000 in the region beyond. [2] However, consideration of the surprisingly low densities of many large trans-Neptunian objects, as well as spectroscopic analysis of their surfaces, suggests that the number of dwarf planets may be much lower, perhaps only nine among ...
These lists contain the Sun, the planets, dwarf planets, many of the larger small Solar System bodies (which includes the asteroids), all named natural satellites, and a number of smaller objects of historical or scientific interest, such as comets and near-Earth objects.
The second resolution, 5B, defined dwarf planets as a subtype of planet, as Stern had originally intended, distinguished from the other eight that were to be called "classical planets". Under this arrangement, the twelve planets of the rejected proposal were to be preserved in a distinction between eight classical planets and four dwarf planets.
This is a list of trans-Neptunian objects (TNOs), which are minor planets in the Solar System that orbit the Sun at a greater distance on average than Neptune, that is, their orbit has a semi-major axis greater than 30.1 astronomical units (AU). The Kuiper belt, scattered disk, and Oort cloud are three conventional divisions of this volume of ...
Former dwarf planet candidates (4 P) S. 120347 Salacia (3 P) V. 174567 Varda (2 P) ... List of possible dwarf planets # 2010 FX86; 2010 KZ39; 2010 TJ; 2012 VP113 ...
Counter-Earth, a planet situated on the other side of the Sun from that of the Earth. Fifth planet (hypothetical), historical speculation about a planet between the orbits of Mars and Jupiter. Phaeton, a planet situated between the orbits of Mars and Jupiter whose destruction supposedly led to the formation of the asteroid belt. This hypothesis ...
The subgiant star Pipirima has a higher mass of 9.1 ± 0.3 M ☉, [84] but its planet candidate Mu2 Scorpii b is most likely a brown dwarf having 14.4 ± 0.8 M J. The candidate planet M51-ULS-1b and the candidate planemo IGR J12580+0134 b might be the blanets , whose hosts have masses of ≫10 and 9 150 000 Solar masses, respectively.
Because of its large size, it is considered a dwarf planet candidate by astronomers. [34]: 245 [10]: 2 [7]: 1 [8]: iii With measurement uncertainties considered, it is tied with 2002 AW 197 and 2013 FY 27 (diameters 729–807 km [35] and 659–820 km, [36] respectively) as the largest unnamed object in the Solar System.