(51659) Robohachi Main-belt Asteroid
Discovered on 14 May 2001 by BATTeRS at Bisei SG Center.
Robohachi is a robot exhibited in the exhibition hall on the 2nd floor of Hachinohe City Children's Science Museum. He has been popular with children as a symbol of the Museum since it first opened. He talks, winks, moves his head from side to side and stretches his arms when his function buttons are pressed.Naming citation (WGSBN Bull. 1, #5, 10), IAU / Minor Planet Center, via NASA/JPL
Where Robohachi is today
Seen from above the solar system on 2026-10-14: Robohachi is 2.57 au from the Sun and 3.46 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 51659 |
| Provisional designation | 2001 JN1 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 5.00 hours |
| Absolute magnitude (H) | 15.42 |
| Orbital period | 3.73 years |
| Semi-major axis | 2.40 au |
| Perihelion – aphelion | 2.05 – 2.76 au |
| Eccentricity | 0.148 |
| Inclination | 8.23° |
| Closest distance between its orbit and Earth's (MOID) | 1.04 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.