(4577) Chikako Main-belt Asteroid
Discovered on 30 November 1988 by Kushida, Y., Inoue, M. at Yatsugatake.
Where Chikako is today
Seen from above the solar system on 2026-10-14: Chikako is 2.47 au from the Sun and 1.50 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4577 |
| Provisional designation | 1988 WG |
| Orbit class | Main-belt Asteroid |
| Diameter | 11.3 km (#4,436 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.224 |
| Rotation period | 5.83 hours |
| Absolute magnitude (H) | 12.49 |
| Orbital period | 4.25 years |
| Semi-major axis | 2.62 au |
| Perihelion – aphelion | 1.86 – 3.38 au |
| Eccentricity | 0.289 |
| Inclination | 9.36° |
| Closest distance between its orbit and Earth's (MOID) | 0.902 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.