(10776) Musashitomiyo Main-belt Asteroid
Discovered on 12 February 1991 by Arai, M., Mori, H. at Yorii.
Musashitomiyo, “minor stickleback” in English, is a fish about five centimeters long known for building a nest in the shape of a bird's nest. Nowadays seen only in the Kumagaya river, the fish has been protected by the citizens of Japan and designated as a natural treasure.Naming citation (20080321/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Musashitomiyo is today
Seen from above the solar system on 2026-10-14: Musashitomiyo is 2.74 au from the Sun and 2.96 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10776 |
| Provisional designation | 1991 CP1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.44 km (#14,131 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.312 |
| Absolute magnitude (H) | 14.61 |
| Orbital period | 3.79 years |
| Semi-major axis | 2.43 au |
| Perihelion – aphelion | 2.11 – 2.75 au |
| Eccentricity | 0.131 |
| Inclination | 5.10° |
| Closest distance between its orbit and Earth's (MOID) | 1.13 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.