(20340) Susanruder Main-belt Asteroid
Discovered on 21 April 1998 by LINEAR at Socorro.
Susan Ruder mentored a finalist in the 2004 Intel Science Talent Search, a science competition for high school seniors. She teaches at the Carmel High School, Carmel, New York.Naming citation (20040415/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Susanruder is today
Seen from above the solar system on 2026-10-14: Susanruder is 2.09 au from the Sun and 2.23 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20340 |
| Provisional designation | 1998 HR91 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.65 |
| Orbital period | 3.67 years |
| Semi-major axis | 2.38 au |
| Perihelion – aphelion | 2.03 – 2.73 au |
| Eccentricity | 0.148 |
| Inclination | 2.99° |
| Closest distance between its orbit and Earth's (MOID) | 1.04 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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