(328677) Stofan Main-belt Asteroid
Discovered on 18 September 2009 by L. H. Wasserman at Anderson Mesa.
Ellen Stofan (b. 1961) is the Under Secretary for Science and Research at the Smithsonian Institution. Stofan has researched the geology of Venus, Mars, and Saturn's moon Titan. She is the former Director of the National Air and Space Museum and Chief Scientist of NASA.Naming citation (WGSBN Bull. 2, #4, 9), IAU / Minor Planet Center, via NASA/JPL
Where Stofan is today
Seen from above the solar system on 2026-10-14: Stofan is 2.87 au from the Sun and 3.76 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 328677 |
| Provisional designation | 2009 SG309 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 17.12 |
| Orbital period | 3.79 years |
| Semi-major axis | 2.43 au |
| Perihelion – aphelion | 1.99 – 2.87 au |
| Eccentricity | 0.182 |
| Inclination | 6.66° |
| Closest distance between its orbit and Earth's (MOID) | 0.981 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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