(29249) Hiraizumi Main-belt Asteroid
Discovered on 26 September 1992 by T. Seki at Geisei.
The town of Hiraizumi in Iwate prefecture reached the height of its prosperity during the twelfth century as the home of the Fujiwara family in Oshu province. The Golden Hall (Konjikido) of Chusonji and the ruins of Motsuji temple are reminiscent of its glory.Naming citation (20100527/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Hiraizumi is today
Seen from above the solar system on 2026-10-14: Hiraizumi is 2.84 au from the Sun and 3.55 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 29249 |
| Provisional designation | 1992 SN12 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.70 km (#6,866 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0820 |
| Absolute magnitude (H) | 14.5 |
| Orbital period | 4.64 years |
| Semi-major axis | 2.78 au |
| Perihelion – aphelion | 2.57 – 2.99 au |
| Eccentricity | 0.0760 |
| Inclination | 0.691° |
| Closest distance between its orbit and Earth's (MOID) | 1.58 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.