(9866) Kanaimitsuo Main-belt Asteroid
Discovered on 15 October 1991 by S. Otomo at Kiyosato.
For 15 years, Mitsuo Kanai (b. 1946) was a lecturer and curator at the Gotoh Planetarium and Astronomical Museum in Tokyo. An eminent observer of Algol, he also educated young lecturers, many of whom are now very active at various institutions. The name was suggested by O. Muramatsu.Naming citation (20010109/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Kanaimitsuo is today
Seen from above the solar system on 2026-10-14: Kanaimitsuo is 1.82 au from the Sun and 0.971 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9866 |
| Provisional designation | 1991 TV4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.49 km (#13,987 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.303 |
| Rotation period | 3.21 hours |
| Absolute magnitude (H) | 14.36 |
| Orbital period | 3.20 years |
| Semi-major axis | 2.17 au |
| Perihelion – aphelion | 1.79 – 2.55 au |
| Eccentricity | 0.175 |
| Inclination | 3.04° |
| Closest distance between its orbit and Earth's (MOID) | 0.780 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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