(11129) Hayachine Main-belt Asteroid
Discovered on 14 November 1996 by T. Kobayashi at Oizumi.
The Hayachine mountain is located in the Kitakami highlands. Countless lovely alpine plants flower in summer there, and many people visit to see the rare specimens. It is one of the 100 most celebrated mountains of Japan.Naming citation (20031110/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Hayachine is today
Seen from above the solar system on 2026-10-14: Hayachine is 2.50 au from the Sun and 3.38 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11129 |
| Provisional designation | 1996 VS5 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.19 km (#8,649 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.350 |
| Rotation period | 17.6 hours |
| Absolute magnitude (H) | 13.12 |
| Orbital period | 4.10 years |
| Semi-major axis | 2.56 au |
| Perihelion – aphelion | 2.42 – 2.70 au |
| Eccentricity | 0.0540 |
| Inclination | 14.0° |
| Closest distance between its orbit and Earth's (MOID) | 1.41 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.