(8220) Nanyou Main-belt Asteroid
Discovered on 13 May 1996 by T. Okuni at Nanyo.
Named for the city where the discoverer lives and his observatory is located. Nanyou City lies to the north of Tokyo, two and a half hours away on the Yamagata line (the new express train). It is famous for Akayu-onsen (hot springs), the Kumano shrine and Kikuningyou (a doll made of chrysanthemums).Naming citation (19981005/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Nanyou is today
Seen from above the solar system on 2026-10-14: Nanyou is 2.22 au from the Sun and 3.21 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 8220 |
| Provisional designation | 1996 JD1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.59 km (#16,079 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.417 |
| Absolute magnitude (H) | 14.88 |
| Orbital period | 3.41 years |
| Semi-major axis | 2.26 au |
| Perihelion – aphelion | 1.96 – 2.57 au |
| Eccentricity | 0.133 |
| Inclination | 3.73° |
| Closest distance between its orbit and Earth's (MOID) | 0.949 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.