(5618) Saitama Main-belt Asteroid
Discovered on 4 March 1990 by A. Sugie at Dynic.
Named for the Japanese prefecture.Naming citation (19960828/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Saitama is today
Seen from above the solar system on 2026-10-14: Saitama is 1.98 au from the Sun and 2.20 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5618 |
| Provisional designation | 1990 EA |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.74 km (#13,354 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.289 |
| Absolute magnitude (H) | 14.39 |
| Orbital period | 3.36 years |
| Semi-major axis | 2.25 au |
| Perihelion – aphelion | 1.97 – 2.52 au |
| Eccentricity | 0.123 |
| Inclination | 7.07° |
| Closest distance between its orbit and Earth's (MOID) | 0.986 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.