(15810) Arawn Trans-Neptunian Object
Discovered on 12 May 1994 by Irwin, M. J., Zytkow, A. at La Palma.
The Middle Welsh Pedair Cainc Y Mabinogi (Four Branches of the Mabinogi) describes Arawn as the ruler of the Celtic otherworld, Annwn.Naming citation (MPC batch dated 2017-01-12), IAU / Minor Planet Center, via NASA/JPL
Where Arawn is today
Seen from above the solar system on 2026-10-14: Arawn is 36.4 au from the Sun and 36.2 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 15810 |
| Provisional designation | 1994 JR1 |
| Orbit class | Trans-Neptunian Object |
| Rotation period | 5.49 hours |
| Absolute magnitude (H) | 7.68 |
| Orbital period | 245 years |
| Semi-major axis | 39.2 au |
| Perihelion – aphelion | 34.7 – 43.7 au |
| Eccentricity | 0.115 |
| Inclination | 3.81° |
| Closest distance between its orbit and Earth's (MOID) | 33.7 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.