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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 ...
The dwarf planet Ceres, as imaged by NASA's Dawn spacecraft. As of 2024, only two missions have targeted and explored dwarf planets up close. On March 6, 2015, the Dawn spacecraft entered orbit around Ceres, becoming the first spacecraft to visit a dwarf planet. [86] On July 14, 2015, the New Horizons space probe flew by Pluto and its five moons.
Relative masses of the Solar planets. Jupiter at 71% of the total and Saturn at 21% dominate the system. Relative masses of the solid bodies of the Solar System. Earth at 48% and Venus at 39% dominate. Bodies less massive than Pluto are not visible at this scale. Relative masses of the rounded moons of the Solar System.
Atmosphere. Composition by volume. hydrogen, water, carbon monoxide, helium [3][4] 2M1207b is a planetary-mass object orbiting the brown dwarf 2M1207, in the constellation Centaurus, approximately 170 light-years from Earth. [5] It is one of the first candidate exoplanets to be directly observed (by infrared imaging).
2014 SV349 is a large trans-Neptunian object from the scattered disc located in the outermost region of the Solar System. It is one of the most distant objects from the Sun at 60.5 AU. The object is a dwarf planet candidate and measures approximately 423 kilometers (260 miles) in diameter. It was discovered on 19 September 2014, by American ...
3.537 ± 0.053 (R)[13] (208996) 2003 AZ84 (provisional designation 2003 AZ84) is a trans-Neptunian object with a possible moon [6][9] located in the outer regions of the Solar System. It is approximately 940 kilometers across its longest axis, as it has an elongated shape. [10] It belongs to the plutinos – a group of minor planets named after ...
The following 110 pages are in this category, out of 110 total. This list may not reflect recent changes. List of possible dwarf planets. 2010 FX86. 2010 KZ39. 2010 TJ. 2012 VP113. 2013 FQ28. 2013 FS28.
e. The geology of solar terrestrial planets mainly deals with the geological aspects of the four terrestrial planets of the Solar System – Mercury, Venus, Earth, and Mars – and one terrestrial dwarf planet: Ceres. Earth is the only terrestrial planet known to have an active hydrosphere. Terrestrial planets are substantially different from ...