(10111) Fresnel Main-belt Asteroid
Discovered on 25 July 1992 by E. W. Elst at Caussols.
Named in memory of Augustin-Jean Fresnel (1788-1827), French physicist who constructed the so-called “Fresnel lens”, following an original idea by Buffon (1748) of dividing a lens surface into concentric rings. By studying the aberration of light, he removed a number of objections to the wave theory.Naming citation (19990728/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Fresnel is today
Seen from above the solar system on 2026-10-14: Fresnel is 2.56 au from the Sun and 2.37 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10111 |
| Provisional designation | 1992 OO1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 9.86 km (#5,190 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.263 |
| Rotation period | 7.42 hours |
| Absolute magnitude (H) | 12.33 |
| Orbital period | 4.08 years |
| Semi-major axis | 2.55 au |
| Perihelion – aphelion | 2.52 – 2.59 au |
| Eccentricity | 0.0147 |
| Inclination | 14.8° |
| Closest distance between its orbit and Earth's (MOID) | 1.54 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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