(18404) Kenichi Main-belt Asteroid
Discovered on 20 March 1993 by Endate, K., Watanabe, K. at Kitami.
Kenichi Miyoshi (b. 1930) is an amateur astronomer who has contributed to astronomical awareness in Ehime Prefecture over many years. He is highly respected by the many amateur astronomers he mentored.Naming citation (20120831/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Kenichi is today
Seen from above the solar system on 2026-10-14: Kenichi is 3.05 au from the Sun and 3.00 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18404 |
| Provisional designation | 1993 FQ2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.29 km (#7,322 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.252 |
| Absolute magnitude (H) | 13.02 |
| Orbital period | 4.60 years |
| Semi-major axis | 2.77 au |
| Perihelion – aphelion | 2.30 – 3.23 au |
| Eccentricity | 0.168 |
| Inclination | 9.88° |
| Closest distance between its orbit and Earth's (MOID) | 1.31 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.