(23809) Haswell Main-belt Asteroid
Discovered on 17 August 1998 by LINEAR at Socorro.
John Douglas Reiji Haswell (b. 1993) is a finalist in the 2007 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for his biochem, medicine, health, and microbiology project. He attends the Hilo Intermediate School, Hilo, Hawaii.Naming citation (20071026/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Haswell is today
Seen from above the solar system on 2026-10-14: Haswell is 2.38 au from the Sun and 3.07 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 23809 |
| Provisional designation | 1998 QC44 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 3.59 hours |
| Absolute magnitude (H) | 14.74 |
| Orbital period | 3.74 years |
| Semi-major axis | 2.41 au |
| Perihelion – aphelion | 2.15 – 2.67 au |
| Eccentricity | 0.108 |
| Inclination | 6.90° |
| Closest distance between its orbit and Earth's (MOID) | 1.15 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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