(16466) Piyashiriyama Main-belt Asteroid
Discovered on 29 March 1990 by Endate, K., Watanabe, K. at Kitami.
Mt. Piyashiri, 987 m in height, is situated in northeast Nayoro city, Hokkaido. Its summit is crested with crags and Japanese stone pines, and it is famous for the beautiful views it offers.Naming citation (WGSBN Bull. 5, #19, 5), IAU / Minor Planet Center, via NASA/JPL
Where Piyashiriyama is today
Seen from above the solar system on 2026-10-14: Piyashiriyama is 2.98 au from the Sun and 2.75 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 16466 |
| Provisional designation | 1990 FJ2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 10.4 km (#4,906 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.135 |
| Absolute magnitude (H) | 12.79 |
| Orbital period | 4.38 years |
| Semi-major axis | 2.68 au |
| Perihelion – aphelion | 2.37 – 2.99 au |
| Eccentricity | 0.115 |
| Inclination | 12.0° |
| Closest distance between its orbit and Earth's (MOID) | 1.41 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.