(20583) Richthammer Main-belt Asteroid
Discovered on 9 September 1999 by LINEAR at Socorro.
James Richthammer mentored a finalist in the 2004 Discovery Channel Youth Science Challenge (DCYSC), a middle school science competition. He teaches at the Aquinas Academy of Pittsburgh, Gibsonia, Pennsylvania.Naming citation (20041028/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Richthammer is today
Seen from above the solar system on 2026-10-14: Richthammer is 2.92 au from the Sun and 3.82 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20583 |
| Provisional designation | 1999 RK158 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.68 |
| Orbital period | 4.88 years |
| Semi-major axis | 2.88 au |
| Perihelion – aphelion | 2.70 – 3.05 au |
| Eccentricity | 0.0608 |
| Inclination | 3.13° |
| Closest distance between its orbit and Earth's (MOID) | 1.69 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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