(29146) McHone Main-belt Asteroid
Discovered on 17 March 1988 by Shoemaker, C. S., Shoemaker, E. M. at Palomar.
John F. McHone (b. 1944), a versatile scientist with interests in geology, oceanography and planetary science, has worked for 25 years on the detection and verification of terrestrial impact craters throughout the world. His studies are based on fieldwork, mineralogy and remote sensing data, including synthetic-aperture radar.Naming citation (20050125/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where McHone is today
Seen from above the solar system on 2026-10-14: McHone is 2.83 au from the Sun and 2.41 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 29146 |
| Provisional designation | 1988 FN |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.79 km (#13,245 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.282 |
| Rotation period | 14.1 hours |
| Absolute magnitude (H) | 14.26 |
| Orbital period | 3.72 years |
| Semi-major axis | 2.40 au |
| Perihelion – aphelion | 1.82 – 2.98 au |
| Eccentricity | 0.241 |
| Inclination | 23.6° |
| Closest distance between its orbit and Earth's (MOID) | 0.845 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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