(2908) Shimoyama Main-belt Asteroid
Discovered on 18 November 1981 by T. Furuta at Tokai.
Where Shimoyama is today
Seen from above the solar system on 2026-10-14: Shimoyama is 2.98 au from the Sun and 3.22 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2908 |
| Provisional designation | 1981 WA |
| Orbit class | Main-belt Asteroid |
| Diameter | 29.7 km (#1,377 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0350 |
| Rotation period | 694 hours |
| Absolute magnitude (H) | 11.97 |
| Orbital period | 5.14 years |
| Semi-major axis | 2.98 au |
| Perihelion – aphelion | 2.52 – 3.43 au |
| Eccentricity | 0.153 |
| Inclination | 13.4° |
| Closest distance between its orbit and Earth's (MOID) | 1.53 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.