(39799) Hadano Main-belt Asteroid
Discovered on 23 October 1997 by A. Asami at Hadano.
Hadano is the city in which Hadano Astronomical Observatory is located. Famous in the past for its tobacco production, today Hadano is noted for its fresh springs. It is situated at the foot of the Tanzawa mountains in an area of great natural beauty.Naming citation (20030106/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Hadano is today
Seen from above the solar system on 2026-10-14: Hadano is 1.76 au from the Sun and 0.810 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 39799 |
| Provisional designation | 1997 UO1 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 3.38 hours |
| Absolute magnitude (H) | 15.29 |
| Orbital period | 3.22 years |
| Semi-major axis | 2.18 au |
| Perihelion – aphelion | 1.76 – 2.61 au |
| Eccentricity | 0.194 |
| Inclination | 3.79° |
| Closest distance between its orbit and Earth's (MOID) | 0.765 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.