(17470) Mitsuhashi Main-belt Asteroid
Discovered on 19 January 1991 by Endate, K., Watanabe, K. at Kitami.
Yasuhiko Mitsuhashi (b. 1947) is a Japanese amateur amateur astronomer as well as a medical practitioner in Takamatsu City. His hospital is known for the astronomical observatory on its roof. The observatory is open to both his patients and to local residents, increasing astronomical awareness in the area.Naming citation (WGSBN Bull. 5, #21, 5), IAU / Minor Planet Center, via NASA/JPL
Where Mitsuhashi is today
Seen from above the solar system on 2026-10-14: Mitsuhashi is 3.56 au from the Sun and 4.14 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 17470 |
| Provisional designation | 1991 BX |
| Orbit class | Main-belt Asteroid |
| Diameter | 11.7 km (#4,219 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.118 |
| Rotation period | 12.6 hours |
| Absolute magnitude (H) | 13.31 |
| Orbital period | 5.63 years |
| Semi-major axis | 3.16 au |
| Perihelion – aphelion | 2.74 – 3.59 au |
| Eccentricity | 0.135 |
| Inclination | 4.13° |
| Closest distance between its orbit and Earth's (MOID) | 1.75 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Yasuhiko
All asteroids named after someone called Yasuhiko