(159826) Knapp Main-belt Asteroid
Discovered on 26 September 2003 by Sloan Digital Sky Survey at Apache Point.
Gillian (Jill) Knapp (b. 1944) is an Anglo-American astronomer and a Founding Mother of the Sloan Digital Sky Survey, best known for her work on stellar mass loss and brown dwarfs.Naming citation (20120406/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Knapp is today
Seen from above the solar system on 2026-10-14: Knapp is 3.37 au from the Sun and 3.71 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 159826 |
| Provisional designation | 2003 SF331 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.79 |
| Orbital period | 5.39 years |
| Semi-major axis | 3.07 au |
| Perihelion – aphelion | 2.69 – 3.46 au |
| Eccentricity | 0.125 |
| Inclination | 7.69° |
| Closest distance between its orbit and Earth's (MOID) | 1.69 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.