(11612) Obu Main-belt Asteroid
Discovered on 21 December 1995 by A. Nakamura at Kuma Kogen.
Obu City (population 76~000), where the discoverer lived for six and a half years, is located in the center of Aichi Prefecture. Known for its automobile industry, Obu is also famous for the 500-year-old “Doburoku Festival”, held at Nagakusa-Tenjinsha Shrine.Naming citation (20000320/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Obu is today
Seen from above the solar system on 2026-10-14: Obu is 3.05 au from the Sun and 4.03 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11612 |
| Provisional designation | 1995 YZ1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.45 km (#8,309 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.169 |
| Absolute magnitude (H) | 13.7 |
| Orbital period | 4.94 years |
| Semi-major axis | 2.90 au |
| Perihelion – aphelion | 2.38 – 3.41 au |
| Eccentricity | 0.178 |
| Inclination | 7.18° |
| Closest distance between its orbit and Earth's (MOID) | 1.41 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.