(31731) Johnwiley Main-belt Asteroid
Discovered on 12 May 1999 by LINEAR at Socorro.
John Wiley mentored a finalist in the 2015 Broadcom MASTERS, a math and science competition for middle school students. He teaches at the Challenge School, Denver, Colorado.Naming citation (MPC batch dated 2016-02-22), IAU / Minor Planet Center, via NASA/JPL
Where Johnwiley is today
Seen from above the solar system on 2026-10-14: Johnwiley is 2.38 au from the Sun and 2.34 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 31731 |
| Provisional designation | 1999 JX70 |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.98 km (#15,253 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.314 |
| Absolute magnitude (H) | 14.86 |
| Orbital period | 4.10 years |
| Semi-major axis | 2.56 au |
| Perihelion – aphelion | 2.34 – 2.78 au |
| Eccentricity | 0.0843 |
| Inclination | 7.27° |
| Closest distance between its orbit and Earth's (MOID) | 1.36 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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