(142401) Simonhook Main-belt Asteroid
Discovered on 27 September 2002 by NEAT at Palomar.
Simon Hook (b. 1961) is Principal Investigator of the ECOSTRESS instrument on the International Space Station and was manager of the Science Division at JPL from 2015–2022.Naming citation (WGSBN Bull. 2, #16, 7), IAU / Minor Planet Center, via NASA/JPL
Where Simonhook is today
Seen from above the solar system on 2026-10-14: Simonhook is 2.93 au from the Sun and 3.10 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 142401 |
| Provisional designation | 2002 SH23 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 16.13 |
| Orbital period | 3.77 years |
| Semi-major axis | 2.42 au |
| Perihelion – aphelion | 1.89 – 2.96 au |
| Eccentricity | 0.219 |
| Inclination | 19.8° |
| Closest distance between its orbit and Earth's (MOID) | 0.989 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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