(4557) Mika Main-belt Asteroid
Discovered on 14 December 1987 by Yanai, M., Watanabe, K. at Kitami.
👶 Mika as a baby name🐶 Mika as a dog name🐱 Mika as a cat name
Where Mika is today
Seen from above the solar system on 2026-10-14: Mika is 2.99 au from the Sun and 3.91 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4557 |
| Provisional designation | 1987 XD |
| Orbit class | Main-belt Asteroid |
| Diameter | 14.0 km (#3,395 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.188 |
| Rotation period | 17.2 hours |
| Absolute magnitude (H) | 12.03 |
| Orbital period | 5.26 years |
| Semi-major axis | 3.02 au |
| Perihelion – aphelion | 2.89 – 3.16 au |
| Eccentricity | 0.0434 |
| Inclination | 11.3° |
| Closest distance between its orbit and Earth's (MOID) | 1.91 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.