(31438) Yasuhitohayashi Main-belt Asteroid
Discovered on 16 January 1999 by LINEAR at Socorro.
Yasuhito Hayashi (b. 1996) was awarded second place in the 2014 Intel International Science and Engineering Fair for his animal sciences project. He attends the Takaoka High School, Takaoka, Toyama, Japan.Naming citation (MPC batch dated 2015-07-02), IAU / Minor Planet Center, via NASA/JPL
Where Yasuhitohayashi is today
Seen from above the solar system on 2026-10-14: Yasuhitohayashi is 2.66 au from the Sun and 1.71 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 31438 |
| Provisional designation | 1999 BV19 |
| Orbit class | Main-belt Asteroid |
| Diameter | 1.78 km (#17,230 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.506 |
| Absolute magnitude (H) | 15.53 |
| Orbital period | 3.60 years |
| Semi-major axis | 2.35 au |
| Perihelion – aphelion | 1.93 – 2.77 au |
| Eccentricity | 0.179 |
| Inclination | 3.13° |
| Closest distance between its orbit and Earth's (MOID) | 0.941 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.