(24640) Omiwa Main-belt Asteroid
Discovered on 13 December 1982 by Kosai, H., Hurukawa, K. at Kiso.
The Omiwa Shrine is one of the oldest Shinto shrines in Japan. It is located on Miwa-Yama, a mountain located in the southeast of the Yamato Basin, Miwa, Sakurai City, Nara prefecture.Naming citation (MPC batch dated 2018-05-29), IAU / Minor Planet Center, via NASA/JPL
Where Omiwa is today
Seen from above the solar system on 2026-10-14: Omiwa is 2.72 au from the Sun and 3.69 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 24640 |
| Provisional designation | 1982 XW1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.93 km (#9,045 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0500 |
| Absolute magnitude (H) | 15.24 |
| Orbital period | 4.23 years |
| Semi-major axis | 2.62 au |
| Perihelion – aphelion | 2.17 – 3.07 au |
| Eccentricity | 0.172 |
| Inclination | 3.02° |
| Closest distance between its orbit and Earth's (MOID) | 1.18 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.