page_title: 2015 RX245
hierarchical_section_title: 2015 RX245
caption_attribution_description: English: Extreme trans-Neptunian objects, 9 objects plus 4 new ones in orange
context_page_description: 2015 RX₂₄₅ is an extreme trans-Neptunian object, detached, on a highly eccentric orbit in the outermost region of the Solar System. It measures approximately 250 kilometers in diameter and is "possibly" a dwarf planet. It was first observed on 8 September 2015, by astronomers with Outer Solar System Origins Survey using the 3.6-meter Canada–France–Hawaii Telescope at Mauna Kea Observatories, Hawaii, in the United States.
context_section_description: 2015 RX₂₄₅ is an extreme trans-Neptunian object, detached, on a highly eccentric orbit in the outermost region of the Solar System. It measures approximately 250 kilometers (160 miles) in diameter and is "possibly" a dwarf planet. It was first observed on 8 September 2015, by astronomers with Outer Solar System Origins Survey using the 3.6-meter Canada–France–Hawaii Telescope at Mauna Kea Observatories, Hawaii, in the United States.
caption: Orbital diagram of 2015 RX245 and other objects along with hypothetical Planet Nine
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