(8668) Satomimura Main-belt Asteroid
Discovered on 16 April 1991 by Otomo, S., Muramatsu, O. at Kiyosato.
Satomi village is famous for the starry sky in Ibaraki prefecture, 150 km north of Tokyo. A large star party is held there each autumn.Naming citation (20080321/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Satomimura is today
Seen from above the solar system on 2026-10-14: Satomimura is 2.53 au from the Sun and 1.56 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 8668 |
| Provisional designation | 1991 HM |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.01 km (#8,924 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.137 |
| Rotation period | 170 hours |
| Absolute magnitude (H) | 14.16 |
| Orbital period | 3.77 years |
| Semi-major axis | 2.42 au |
| Perihelion – aphelion | 2.18 – 2.66 au |
| Eccentricity | 0.0994 |
| Inclination | 11.1° |
| Closest distance between its orbit and Earth's (MOID) | 1.17 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 16 April 1991
More named asteroids discovered by Otomo, S., Muramatsu, O.
- (5337) Aoki
- (5377) Komori
- (5379) Abehiroshi
- (5829) Ishidagoro
- (6138) Miguelhernandez
- (6520) Sugawa
- (6830) Johnbackus
- (6860) Sims
- (6910) Ikeguchi
- (8276) Shigei
- (8855) Miwa
- (9041) Takane
← (8667) Fontane · (8672) Morse →