(10159) Tokara Main-belt Asteroid
Discovered on 9 December 1994 by T. Kobayashi at Oizumi.
The Tokara Archipelago in southern Japan includes seven inhabited and five uninhabited islands.Naming citation (20030501/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Tokara is today
Seen from above the solar system on 2026-10-14: Tokara is 2.09 au from the Sun and 2.50 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10159 |
| Provisional designation | 1994 XS4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.62 km (#11,391 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.190 |
| Rotation period | 5.53 hours |
| Absolute magnitude (H) | 13.81 |
| Orbital period | 3.75 years |
| Semi-major axis | 2.41 au |
| Perihelion – aphelion | 2.09 – 2.74 au |
| Eccentricity | 0.134 |
| Inclination | 7.43° |
| Closest distance between its orbit and Earth's (MOID) | 1.08 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.