Given the recent announcement of 2017 OF201 and 2023 KQ14 ("Ammonite"), it appears Brown and Batygin's P9 doesn't exist after all.
Hence, I think it's weird that Lykawka and Ito's alternative P9 model (DOI: 10.3847/1538-3881/aceaf0) doesn't seem to be getting much attention - especially given that, in addition to explaining Sedna's orbit, it also explains the main Kuiper Belt's structure—with no orbital clustering required. I'd hence say it probably does exist while Brown and Batygin's interpretation does not.
Lykawka & Ito's P9: * Semi-major axis: 250 AU (lower end of range) * Perihelion: 200 AU * Mass: 1.5 Earth masses (lower end of range) * Inclination: 30 degrees (yes this is the one I used in my size comparison)
Joseph William Pelobello
Given the recent announcement of 2017 OF201 and 2023 KQ14 ("Ammonite"), it appears Brown and Batygin's P9 doesn't exist after all.
Hence, I think it's weird that Lykawka and Ito's alternative P9 model (DOI: 10.3847/1538-3881/aceaf0) doesn't seem to be getting much attention - especially given that, in addition to explaining Sedna's orbit, it also explains the main Kuiper Belt's structure—with no orbital clustering required. I'd hence say it probably does exist while Brown and Batygin's interpretation does not.
Lykawka & Ito's P9:
* Semi-major axis: 250 AU (lower end of range)
* Perihelion: 200 AU
* Mass: 1.5 Earth masses (lower end of range)
* Inclination: 30 degrees
(yes this is the one I used in my size comparison)
1 month ago (edited) | [YT] | 0