(9418) Mayumi Main-belt Asteroid
Discovered on 18 November 1995 by Sato, N., Urata, T. at Chichibu.
Mayumi Sato is the wife of the first discoverer, who has received much support from her for his discoveries and observations.Naming citation (20090209/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Mayumi is today
Seen from above the solar system on 2026-10-14: Mayumi is 2.55 au from the Sun and 3.48 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9418 |
| Provisional designation | 1995 WX5 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.33 km (#14,402 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0530 |
| Absolute magnitude (H) | 16.43 |
| Orbital period | 3.24 years |
| Semi-major axis | 2.19 au |
| Perihelion – aphelion | 1.74 – 2.63 au |
| Eccentricity | 0.204 |
| Inclination | 0.891° |
| Closest distance between its orbit and Earth's (MOID) | 0.743 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.