(5557) Chimikeppuko Main-belt Asteroid
Discovered on 7 February 1989 by Endate, K., Watanabe, K. at Kitami.
Where Chimikeppuko is today
Seen from above the solar system on 2026-10-14: Chimikeppuko is 2.24 au from the Sun and 2.58 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5557 |
| Provisional designation | 1989 CM1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.10 km (#7,513 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.291 |
| Rotation period | 4.17 hours |
| Absolute magnitude (H) | 12.96 |
| Orbital period | 4.05 years |
| Semi-major axis | 2.54 au |
| Perihelion – aphelion | 2.15 – 2.93 au |
| Eccentricity | 0.154 |
| Inclination | 5.90° |
| Closest distance between its orbit and Earth's (MOID) | 1.14 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.