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Beyond Jupiter - The World of Distant Minor Planets FOCUS (225088) Gonggong
JOA 2026, Vol. 16, No. 2, Page 22 Author(s): Mike KretlowAbstract: (225088) Gonggong (provisional designation 2007 OR10) is one of the largest known trans-Neptunian objects and a strong dwarf-planet candidate. With an effective diameter close to 1230 km, a highly eccentric and inclined orbit, an unusually slow rotation, and a distinctly red surface, (225088) Gonggong represents a notable example among the more massive bodies of the scattered disk. The discovery of its satellite Xiangliu provides critical constraints on its mass and bulk density. This article reviews the discovery, orbital properties, physical characteristics, satellite system, and the current status of stellar occultation observation.