(19423) Hefter Main-belt Asteroid
Discovered on 20 March 1998 by LINEAR at Socorro.
Jonathan S. Hefter (b. 1985) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for his engineering team project. He attends the Halb Yeshiva High School For Boys, Lawrence, New York, U.S.A.Naming citation (20040830/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Hefter is today
Seen from above the solar system on 2026-10-14: Hefter is 2.42 au from the Sun and 1.43 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 19423 |
| Provisional designation | 1998 FD58 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.13 |
| Orbital period | 3.76 years |
| Semi-major axis | 2.42 au |
| Perihelion – aphelion | 2.16 – 2.68 au |
| Eccentricity | 0.109 |
| Inclination | 1.00° |
| Closest distance between its orbit and Earth's (MOID) | 1.17 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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