(4498) Shinkoyama Main-belt Asteroid
Discovered on 5 January 1989 by T. Seki at Geisei.
Where Shinkoyama is today
Seen from above the solar system on 2026-10-14: Shinkoyama is 3.34 au from the Sun and 4.33 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4498 |
| Provisional designation | 1989 AG1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 16.8 km (#2,715 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.143 |
| Rotation period | 5.21 hours |
| Absolute magnitude (H) | 11.85 |
| Orbital period | 5.19 years |
| Semi-major axis | 3.00 au |
| Perihelion – aphelion | 2.62 – 3.38 au |
| Eccentricity | 0.127 |
| Inclination | 8.89° |
| Closest distance between its orbit and Earth's (MOID) | 1.63 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.