(15718) Imokawa Main-belt Asteroid
Discovered on 30 January 1990 by Matsuyama, M., Watanabe, K. at Kushiro.
Satoshi Imokawa (b. 1965) is an astronomy instructor at the public astronomical observatory Hoshino Bunkakan in Yame city, Fukuoka prefecture. His main interests are observing comets, nebulae, star clusters and solar eclipse.Naming citation (MPC batch dated 2018-01-31), IAU / Minor Planet Center, via NASA/JPL
Where Imokawa is today
Seen from above the solar system on 2026-10-14: Imokawa is 2.55 au from the Sun and 1.76 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 15718 |
| Provisional designation | 1990 BB2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.49 km (#9,730 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.281 |
| Absolute magnitude (H) | 13.64 |
| Orbital period | 4.17 years |
| Semi-major axis | 2.59 au |
| Perihelion – aphelion | 2.30 – 2.88 au |
| Eccentricity | 0.111 |
| Inclination | 11.1° |
| Closest distance between its orbit and Earth's (MOID) | 1.32 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Satoshi
All asteroids named after someone called Satoshi