(9831) Simongreen Main-belt Asteroid
Discovered on 22 August 1979 by C.-I. Lagerkvist at La Silla.
Simon F. Green (b. 1959) has carried out observations of minor planets and transneptunian objects for over 20 years, starting with the use of the IRAS satellite to detect fast-moving objects.Naming citation (20031110/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Simongreen is today
Seen from above the solar system on 2026-10-14: Simongreen is 2.93 au from the Sun and 3.86 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9831 |
| Provisional designation | 1979 QZ |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.35 |
| Orbital period | 3.76 years |
| Semi-major axis | 2.42 au |
| Perihelion – aphelion | 1.91 – 2.93 au |
| Eccentricity | 0.211 |
| Inclination | 2.41° |
| Closest distance between its orbit and Earth's (MOID) | 0.901 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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All asteroids named after someone called Simon
Also discovered on 22 August 1979
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