(24858) Diethelm Main-belt Asteroid
Discovered on 21 January 1996 by Wolf, M., Pravec, P. at Ondrejov.
Roger Diethelm (b. 1948) is a Swiss observer of variable stars and editor of the variable-stars bulletin of the Schweizerische Astronomische Gesellschaft. He founded the R. Szafraniec Observatory in Metzerlen, where the first of the discoverers observed on several occasions.Naming citation (20020328/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Diethelm is today
Seen from above the solar system on 2026-10-14: Diethelm is 2.86 au from the Sun and 3.42 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 24858 |
| Provisional designation | 1996 BB1 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.15 |
| Orbital period | 4.09 years |
| Semi-major axis | 2.56 au |
| Perihelion – aphelion | 2.08 – 3.04 au |
| Eccentricity | 0.186 |
| Inclination | 3.83° |
| Closest distance between its orbit and Earth's (MOID) | 1.09 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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