(12056) Yoshigeru Main-belt Asteroid
Discovered on 30 December 1997 by T. Kobayashi at Oizumi.
Yoshida Shigeru (1952-1997) was a Japanese physician who specialized in the circulatory system and the use of magnetic resonance imaging for the diagnosis of heart disease. His premature death cut short his plans for a minor-planet survey. The name was suggested by J. Kobayashi and M. Namiki.Naming citation (20010109/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Yoshigeru is today
Seen from above the solar system on 2026-10-14: Yoshigeru is 1.92 au from the Sun and 2.34 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12056 |
| Provisional designation | 1997 YS11 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.54 |
| Orbital period | 3.45 years |
| Semi-major axis | 2.28 au |
| Perihelion – aphelion | 1.92 – 2.65 au |
| Eccentricity | 0.161 |
| Inclination | 6.29° |
| Closest distance between its orbit and Earth's (MOID) | 0.899 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.