(9594) Garstang Main-belt Asteroid
Discovered on 4 September 1991 by R. H. McNaught at Siding Spring.
Roy Henry Garstang (1925-2009) made basic contributions in atomic physics and astronomical spectroscopy. A pioneer in modeling light pollution, he promoted night sky protection. Assistant director of the University of London Observatory (1959-1964), he then joined the faculty of the University of Colorado in Boulder.Naming citation (20100130/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Garstang is today
Seen from above the solar system on 2026-10-14: Garstang is 2.15 au from the Sun and 2.81 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9594 |
| Provisional designation | 1991 RG |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.06 km (#12,584 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.479 |
| Absolute magnitude (H) | 13.73 |
| Orbital period | 3.35 years |
| Semi-major axis | 2.24 au |
| Perihelion – aphelion | 2.03 – 2.45 au |
| Eccentricity | 0.0952 |
| Inclination | 3.91° |
| Closest distance between its orbit and Earth's (MOID) | 1.02 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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