(11501) Ushimaru Main-belt Asteroid
Discovered on 29 October 1989 by Mizuno, Y., Furuta, T. at Kani.
Kouhei Ushimaru (b. 1952) is a Japanese amateur astronomer living in Hida City, Gifu Prefecture. He undertakes visual and photographic observation of comets and does local-community public astronomy outreach as a member of the Hoshinohiroba comet observers network.Naming citation (WGSBN Bull. 6, #15, 6), IAU / Minor Planet Center, via NASA/JPL
Where Ushimaru is today
Seen from above the solar system on 2026-10-14: Ushimaru is 2.15 au from the Sun and 1.93 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11501 |
| Provisional designation | 1989 UU3 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.15 |
| Orbital period | 3.42 years |
| Semi-major axis | 2.27 au |
| Perihelion – aphelion | 1.87 – 2.66 au |
| Eccentricity | 0.174 |
| Inclination | 3.36° |
| Closest distance between its orbit and Earth's (MOID) | 0.880 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.