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Gonggong (minor-planet designation: 225088 Gonggong) is a dwarf planet and a member of the scattered disc beyond Neptune.It has a highly eccentric and inclined orbit during which it ranges from 34–101 astronomical units (5.1–15.1 billion kilometers; 3.2–9.4 billion miles) from the Sun.
English: These two images, taken a year apart, reveal a moon orbiting the dwarf planet 225088 Gonggong (2007 OR 10).Each image, taken by the NASA/ESA Hubble Space Telescope's Wide Field Camera 3, shows the companion in a different orbital position around its parent body. 225088 Gonggong is the third-largest known dwarf planet, behind Pluto and Eris, and the largest unnamed world in the Solar ...
Xiangliu, full designation 225088 Gonggong I Xiangliu, is the only known moon of the scattered-disc dwarf planet Gonggong.It was discovered by a team of astronomers led by Csaba Kiss during an analysis of archival Hubble Space Telescope images of Gonggong.
The largest known trans-Neptunian objects are Pluto and Eris, followed by Haumea, Makemake, Gonggong, Quaoar, Sedna, and Orcus, all of them being officially recognized as dwarf planets by the IAU except for Gonggong, Sedna, and Orcus. There are also many possible dwarf planets, such as Salacia, (307261) 2002 MS 4, Varda, Ixion, and Varuna.
A dwarf planet is a small planetary-mass object that is in direct orbit around the Sun, massive enough to be gravitationally rounded, but insufficient to achieve orbital dominance like the eight classical planets of the Solar System.
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The radii of these objects range over three orders of magnitude, from planetary-mass objects like dwarf planets and some moons to the planets and the Sun. This list does not include small Solar System bodies , but it does include a sample of possible planetary-mass objects whose shapes have yet to be determined.
English: Orbits of 225088 Gonggong (2007 OR 10), with Eris, positions on Jan 1, 2018. Date: 23 October 2017: Source: Own work: ... Gonggong (dwarf planet) Global file ...