(11682) Shiwaku Main-belt Asteroid
Discovered on 3 March 1998 by H. Abe at Yatsuka.
Hideaki Shiwaku (b. 1963) is one of promoters of the Matsue Astronomical Club, an amateur astronomers group in the Matsue area of Japan, and a good friend of the discoverer.Naming citation (20000523/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Shiwaku is today
Seen from above the solar system on 2026-10-14: Shiwaku is 2.79 au from the Sun and 1.89 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11682 |
| Provisional designation | 1998 EX6 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.84 km (#10,924 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.241 |
| Rotation period | 4.02 hours |
| Absolute magnitude (H) | 13.84 |
| Orbital period | 3.78 years |
| Semi-major axis | 2.42 au |
| Perihelion – aphelion | 2.00 – 2.85 au |
| Eccentricity | 0.174 |
| Inclination | 3.06° |
| Closest distance between its orbit and Earth's (MOID) | 0.989 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Hideaki
All asteroids named after someone called Hideaki