(45500) Motegi Main-belt Asteroid
Discovered on 27 January 2000 by T. Kobayashi at Oizumi.
Japanese amateur astronomer Hiromitsu Motegi (b. 1960) has a particular interest in digital imaging. As an instructor at many meetings of observers, he has shared his knowledge with others, particularly children. He also collaborates with amateur astronomers through his web site.Naming citation (20050721/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Motegi is today
Seen from above the solar system on 2026-10-14: Motegi is 2.84 au from the Sun and 2.44 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 45500 |
| Provisional designation | 2000 BN3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.94 km (#6,647 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0530 |
| Absolute magnitude (H) | 14.3 |
| Orbital period | 5.47 years |
| Semi-major axis | 3.11 au |
| Perihelion – aphelion | 2.66 – 3.55 au |
| Eccentricity | 0.143 |
| Inclination | 2.58° |
| Closest distance between its orbit and Earth's (MOID) | 1.68 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.