(27590) Koarimatsu Main-belt Asteroid
Discovered on 30 December 2000 by LONEOS at Anderson Mesa.
Ko Arimatsu (b. 1987) is an astronomer at Kyoto University. He discovered a kilometer-sized Kuiper belt object by stellar occultation using a low-cost small telescope named the Organized Autotelescopes for Serendipitous Event Survey or OASES.Naming citation (WGSBN Bull. 1, #2, 11), IAU / Minor Planet Center, via NASA/JPL
Where Koarimatsu is today
Seen from above the solar system on 2026-10-14: Koarimatsu is 3.56 au from the Sun and 2.75 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 27590 |
| Provisional designation | 2000 YO132 |
| Orbit class | Main-belt Asteroid |
| Diameter | 12.9 km (#3,751 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0560 |
| Absolute magnitude (H) | 13.54 |
| Orbital period | 5.70 years |
| Semi-major axis | 3.19 au |
| Perihelion – aphelion | 2.81 – 3.56 au |
| Eccentricity | 0.117 |
| Inclination | 23.3° |
| Closest distance between its orbit and Earth's (MOID) | 1.82 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Kyoto
All asteroids named after someone called Kyoto
Also discovered on 30 December 2000
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