(20343) Vaccariello Main-belt Asteroid
Discovered on 21 April 1998 by LINEAR at Socorro.
Michael Vaccariello mentored a finalist in the 2004 Intel Science Talent Search, a science competition for high school seniors. He teaches at the Sachem North High School, Lake Ronkonkoma, New York.Naming citation (20040415/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Vaccariello is today
Seen from above the solar system on 2026-10-14: Vaccariello is 2.35 au from the Sun and 2.76 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20343 |
| Provisional designation | 1998 HC100 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.76 km (#13,311 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.289 |
| Absolute magnitude (H) | 14.38 |
| Orbital period | 3.99 years |
| Semi-major axis | 2.52 au |
| Perihelion – aphelion | 2.29 – 2.74 au |
| Eccentricity | 0.0883 |
| Inclination | 4.43° |
| Closest distance between its orbit and Earth's (MOID) | 1.29 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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