(21753) Trudel Main-belt Asteroid
Discovered on 9 September 1999 by LINEAR at Socorro.
Thomas Andrew Trudel (b. 1987) was awarded second place in the 2005 Intel International Science and Engineering Fair for his engineering project. He attends the Muhlenberg High School, Laureldale, Pennsylvania, U.S.A.Naming citation (20050822/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Trudel is today
Seen from above the solar system on 2026-10-14: Trudel is 2.41 au from the Sun and 1.50 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21753 |
| Provisional designation | 1999 RJ180 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.77 km (#13,280 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.124 |
| Absolute magnitude (H) | 15.03 |
| Orbital period | 3.85 years |
| Semi-major axis | 2.46 au |
| Perihelion – aphelion | 2.26 – 2.66 au |
| Eccentricity | 0.0809 |
| Inclination | 8.18° |
| Closest distance between its orbit and Earth's (MOID) | 1.28 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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