Gonggong

Moon: Xiangliu

• Discovery: Discovered in 2007 by a team including Michael Brown, it was originally given the provisional name 2007 OR10. 
• Characteristics: Gonggong is a trans-Neptunian object, meaning its orbit lies beyond Neptune. It's known for its red color, possibly due to methane on its surface, according to a report.
• Size and Orbit: It's estimated to be around 1,230 kilometers in diameter, making it one of the larger Kuiper Belt objects, according to the Planetary Society. Its orbit is highly eccentric, taking it far beyond Neptune's orbit.