(147971) Nametoko Main-belt Asteroid
Discovered on 24 November 1994 by A. Nakamura at Kuma Kogen.
Part of the Ashizuri-Uwakai National Park, Nametoko Ravine is located in the south of Ehime prefecture. It is famous for its extremely smooth and large riverbed rocks. The Yukiwano-taki waterfall in the ravine is one of the best 100 waterfalls in Japan, known collectively as “Nihon Hyaku Meibaku”.Naming citation (20100330/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Nametoko is today
Seen from above the solar system on 2026-10-14: Nametoko is 3.55 au from the Sun and 4.27 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 147971 |
| Provisional designation | 1994 WF |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.35 |
| Orbital period | 5.67 years |
| Semi-major axis | 3.18 au |
| Perihelion – aphelion | 2.54 – 3.82 au |
| Eccentricity | 0.200 |
| Inclination | 6.33° |
| Closest distance between its orbit and Earth's (MOID) | 1.56 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.