(31982) Johnwallis Outer Main-belt Asteroid
Discovered on 30 April 2000 by P. G. Comba at Prescott.
John Wallis (1616-1703) was an professor of geometry at Oxford. His fame rests on a formula that represents π as an infinite product and on the invention of the symbol ∞ for infinity.Naming citation (20020328/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Johnwallis is today
Seen from above the solar system on 2026-10-14: Johnwallis is 3.64 au from the Sun and 3.66 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 31982 |
| Provisional designation | 2000 HS20 |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 4.81 km (#10,980 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.110 |
| Absolute magnitude (H) | 15.17 |
| Orbital period | 5.73 years |
| Semi-major axis | 3.20 au |
| Perihelion – aphelion | 2.73 – 3.68 au |
| Eccentricity | 0.148 |
| Inclination | 2.25° |
| Closest distance between its orbit and Earth's (MOID) | 1.71 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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