(4381) Uenohara Main-belt Asteroid
Discovered on 22 November 1989 by N. Kawasato at Uenohara.
Where Uenohara is today
Seen from above the solar system on 2026-10-14: Uenohara is 3.01 au from the Sun and 2.45 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4381 |
| Provisional designation | 1989 WD1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 20.2 km (#2,174 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.157 |
| Rotation period | 25.2 hours |
| Absolute magnitude (H) | 11.47 |
| Orbital period | 5.27 years |
| Semi-major axis | 3.03 au |
| Perihelion – aphelion | 2.80 – 3.25 au |
| Eccentricity | 0.0745 |
| Inclination | 11.2° |
| Closest distance between its orbit and Earth's (MOID) | 1.80 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.