(10289) Geoffperry Outer Main-belt Asteroid
Discovered on 24 August 1984 by Oak Ridge Observatory at Harvard.
Geoffrey E. Perry (1927-2000), cheerfully eccentric physics teacher at Kettering Grammar School, England, taught his students to monitor radio signals from Soviet satellites. His group of students discovered the Plesetsk launch site and became the most reliable public source of space information during the Cold War.Naming citation (20000320/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Geoffperry is today
Seen from above the solar system on 2026-10-14: Geoffperry is 3.78 au from the Sun and 3.93 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10289 |
| Provisional designation | 1984 QS |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 10.7 km (#4,736 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0890 |
| Absolute magnitude (H) | 13.4 |
| Orbital period | 5.74 years |
| Semi-major axis | 3.21 au |
| Perihelion – aphelion | 2.60 – 3.81 au |
| Eccentricity | 0.189 |
| Inclination | 1.97° |
| Closest distance between its orbit and Earth's (MOID) | 1.59 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Geoffrey
- (4209) Briggs
- (11753) Geoffburbidge
- (13018) Geoffjames
- (21714) Geoffreywoo
- (30090) Grossano
- (38431) Jeffbeck
- (132904) Notkin
- (160215) Haines-Stiles
All asteroids named after someone called Geoffrey