(18821) Markhavel Main-belt Asteroid
Discovered on 13 July 1999 by LINEAR at Socorro.
Mark Junichi Havel (b. 1984) was awarded third place in the 2003 Intel International Science and Engineering Fair for his gerontology team project. He attends the Keystone School, San Antonio, Texas, U.S.A.Naming citation (20040830/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Markhavel is today
Seen from above the solar system on 2026-10-14: Markhavel is 2.91 au from the Sun and 3.27 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18821 |
| Provisional designation | 1999 NW9 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 13.99 |
| Orbital period | 5.05 years |
| Semi-major axis | 2.94 au |
| Perihelion – aphelion | 2.64 – 3.24 au |
| Eccentricity | 0.103 |
| Inclination | 2.36° |
| Closest distance between its orbit and Earth's (MOID) | 1.65 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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All asteroids named after someone called Mark
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