(31098) Frankhill Mars-crossing Asteroid
Discovered on 9 June 1997 by R. A. Tucker at Goodricke-Pigott.
Frank Hill (b. 1951) is a U.S. astronomer, inventor of a method for probing beneath the solar surface, an expert on selection of observatory sites, and Data Scientist for the worldwide GONG network of helioseismic telescopes and the National Solar Observatory digital data archive.Naming citation (20030806/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Frankhill is today
Seen from above the solar system on 2026-10-14: Frankhill is 2.62 au from the Sun and 2.80 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 31098 |
| Provisional designation | 1997 LQ2 |
| Orbit class | Mars-crossing Asteroid |
| Diameter | 2.81 km (#15,644 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.309 |
| Rotation period | 50.0 hours |
| Absolute magnitude (H) | 14.62 |
| Orbital period | 3.47 years |
| Semi-major axis | 2.29 au |
| Perihelion – aphelion | 1.65 – 2.94 au |
| Eccentricity | 0.282 |
| Inclination | 22.5° |
| Closest distance between its orbit and Earth's (MOID) | 0.809 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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