(11878) Hanamiyama Main-belt Asteroid
Discovered on 18 April 1990 by T. Seki at Geisei.
Hanamiyama Mountain in Fukushima city is famous for the production of flowering plants. In spring the mountain is completely covered with colorful flowers of cherry trees, peaches and golden bells attracting large numbers of tourists. The name was suggested by H. Ohno.Naming citation (20070601/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Hanamiyama is today
Seen from above the solar system on 2026-10-14: Hanamiyama is 2.08 au from the Sun and 2.60 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11878 |
| Provisional designation | 1990 HJ |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.46 km (#14,071 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.371 |
| Absolute magnitude (H) | 14.34 |
| Orbital period | 3.70 years |
| Semi-major axis | 2.39 au |
| Perihelion – aphelion | 2.04 – 2.74 au |
| Eccentricity | 0.146 |
| Inclination | 3.90° |
| Closest distance between its orbit and Earth's (MOID) | 1.05 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.