(10900) Folkner Main-belt Asteroid
Discovered on 30 November 1997 by T. Kobayashi at Oizumi.
William Folkner (b. 1956), a principal scientist at the Jet Propulsion Laboratory, is a recognized authority on the planetary ephemerides. He continually improves the orbital positions of all the planets using a wide variety of ground-based and space-based observations.Naming citation (20100130/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Folkner is today
Seen from above the solar system on 2026-10-14: Folkner is 2.65 au from the Sun and 2.68 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10900 |
| Provisional designation | 1997 WF21 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.86 km (#7,820 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0720 |
| Absolute magnitude (H) | 14.76 |
| Orbital period | 3.76 years |
| Semi-major axis | 2.42 au |
| Perihelion – aphelion | 2.00 – 2.84 au |
| Eccentricity | 0.174 |
| Inclination | 3.34° |
| Closest distance between its orbit and Earth's (MOID) | 1.01 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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