(5686) Chiyonoura Main-belt Asteroid
Discovered on 20 December 1990 by Matsuyama, M., Watanabe, K. at Kushiro.
Where Chiyonoura is today
Seen from above the solar system on 2026-10-14: Chiyonoura is 2.23 au from the Sun and 1.96 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5686 |
| Provisional designation | 1990 YQ |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.89 km (#13,013 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.352 |
| Absolute magnitude (H) | 14.23 |
| Orbital period | 3.68 years |
| Semi-major axis | 2.38 au |
| Perihelion – aphelion | 1.89 – 2.88 au |
| Eccentricity | 0.209 |
| Inclination | 1.46° |
| Closest distance between its orbit and Earth's (MOID) | 0.893 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.