(7992) Yozan Main-belt Asteroid
Discovered on 28 November 1981 by T. Furuta at Tokai.
Uesugi Yozan (1751-1822), the ninth lord of Yamagata prefecture's Yonezawa Castle, was the greatest ruler of his clan. His rule led to economic recovery. He promoted austerity programs, wilderness cultivation, public education, the textile industry and silkworm breeding.Naming citation (20010509/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Yozan is today
Seen from above the solar system on 2026-10-14: Yozan is 3.83 au from the Sun and 4.66 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 7992 |
| Provisional designation | 1981 WC |
| Orbit class | Main-belt Asteroid |
| Diameter | 15.6 km (#2,986 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0660 |
| Absolute magnitude (H) | 12.87 |
| Orbital period | 5.41 years |
| Semi-major axis | 3.08 au |
| Perihelion – aphelion | 2.06 – 4.10 au |
| Eccentricity | 0.330 |
| Inclination | 9.62° |
| Closest distance between its orbit and Earth's (MOID) | 1.08 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.