(13339) Williamsmith Main-belt Asteroid
Discovered on 26 September 1998 by LINEAR at Socorro.
William Smith mentored a finalist in the 2019 Broadcom MASTERS, a math and science competition for middle-school students. He teaches at the Discovery Middle School, Madison, Alabama.Naming citation (WGSBN Bull. 3, #2, 11), IAU / Minor Planet Center, via NASA/JPL
Where Williamsmith is today
Seen from above the solar system on 2026-10-14: Williamsmith is 3.20 au from the Sun and 4.14 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 13339 |
| Provisional designation | 1998 SF123 |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.67 km (#6,908 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.144 |
| Absolute magnitude (H) | 13.73 |
| Orbital period | 5.11 years |
| Semi-major axis | 2.97 au |
| Perihelion – aphelion | 2.67 – 3.26 au |
| Eccentricity | 0.0998 |
| Inclination | 10.4° |
| Closest distance between its orbit and Earth's (MOID) | 1.67 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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All asteroids named after someone called William
Also discovered on 26 September 1998
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