(21673) Leatherman Main-belt Asteroid
Discovered on 7 September 1999 by LINEAR at Socorro.
Amanda Kay Leatherman (b. 1987) was awarded second place in the 2005 Intel International Science and Engineering Fair for her microbiology project. She attends the Urbana High School, Ijamsville, Maryland, U.S.A.Naming citation (20050822/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Leatherman is today
Seen from above the solar system on 2026-10-14: Leatherman is 2.42 au from the Sun and 2.57 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21673 |
| Provisional designation | 1999 RL15 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.17 |
| Orbital period | 3.66 years |
| Semi-major axis | 2.38 au |
| Perihelion – aphelion | 2.18 – 2.57 au |
| Eccentricity | 0.0834 |
| Inclination | 6.87° |
| Closest distance between its orbit and Earth's (MOID) | 1.18 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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