(15740) Hyakumangoku Main-belt Asteroid
Discovered on 15 March 1991 by Endate, K., Watanabe, K. at Kitami.
One million “koku”, or five million bushels of rice, signify the extreme wealth of the Japanese province of Kaga in the Edo Era. This name was selected from candidates proposed by children attending the Fureai Space Festival 2006, held in Kanazawa city to celebrate Space Day in Japan.Naming citation (20070402/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Hyakumangoku is today
Seen from above the solar system on 2026-10-14: Hyakumangoku is 2.71 au from the Sun and 1.73 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 15740 |
| Provisional designation | 1991 EG1 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 7.41 hours |
| Absolute magnitude (H) | 13.54 |
| Orbital period | 4.14 years |
| Semi-major axis | 2.58 au |
| Perihelion – aphelion | 2.25 – 2.91 au |
| Eccentricity | 0.127 |
| Inclination | 15.0° |
| Closest distance between its orbit and Earth's (MOID) | 1.29 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.