(4157) Izu Main-belt Asteroid
Discovered on 11 December 1988 by Y. Oshima at Gekko.
Where Izu is today
Seen from above the solar system on 2026-10-14: Izu is 2.26 au from the Sun and 2.36 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4157 |
| Provisional designation | 1988 XD2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 21.0 km (#2,078 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0695 |
| Rotation period | 17.9 hours |
| Spectral type | Ch |
| Absolute magnitude (H) | 12.51 |
| Orbital period | 4.37 years |
| Semi-major axis | 2.67 au |
| Perihelion – aphelion | 2.24 – 3.11 au |
| Eccentricity | 0.164 |
| Inclination | 12.8° |
| Closest distance between its orbit and Earth's (MOID) | 1.23 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.