(40457) Williamkuhn Main-belt Asteroid
Discovered on 4 September 1999 by Collins, M., White, M. at Anza.
William Kuhn (b. 1918) lives in Orange, California. He designed and directed the building of the 0.55-m Kuhn telescope in Anza for the Orange County Astronomers. This telescope has been used for the discovery of numerous minor planets. Kuhn has dedicated his life to educating, assisting and inspiring astronomers of all ages.Naming citation (20021120/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Williamkuhn is today
Seen from above the solar system on 2026-10-14: Williamkuhn is 2.61 au from the Sun and 3.00 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 40457 |
| Provisional designation | 1999 RG43 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.11 km (#16,918 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.331 |
| Absolute magnitude (H) | 15.57 |
| Orbital period | 3.65 years |
| Semi-major axis | 2.37 au |
| Perihelion – aphelion | 2.04 – 2.70 au |
| Eccentricity | 0.138 |
| Inclination | 8.10° |
| Closest distance between its orbit and Earth's (MOID) | 1.04 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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