(4929) Yamatai Main-belt Asteroid
Discovered on 13 December 1982 by Kosai, H., Hurukawa, K. at Kiso.
Where Yamatai is today
Seen from above the solar system on 2026-10-14: Yamatai is 2.11 au from the Sun and 3.06 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4929 |
| Provisional designation | 1982 XV |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.95 km (#12,853 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.409 |
| Rotation period | 45.3 hours |
| Absolute magnitude (H) | 13.95 |
| Orbital period | 3.29 years |
| Semi-major axis | 2.21 au |
| Perihelion – aphelion | 2.08 – 2.34 au |
| Eccentricity | 0.0586 |
| Inclination | 2.49° |
| Closest distance between its orbit and Earth's (MOID) | 1.08 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.