(4210) Isobelthompson Main-belt Asteroid
Discovered on 21 February 1987 by H. Debehogne at La Silla.
The British archaeologist Isobel Thompson is co-author of Alban's Buried Towns: An Assessment of St. Albans' Archaeology up to A.D. 1600, the first in a series of studies of important archaeological sites in England. The citation was prepared by M. M. Dworetsky.Naming citation (20060219/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Isobelthompson is today
Seen from above the solar system on 2026-10-14: Isobelthompson is 2.92 au from the Sun and 1.95 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4210 |
| Provisional designation | 1987 DY5 |
| Orbit class | Main-belt Asteroid |
| Diameter | 10.3 km (#4,936 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.201 |
| Absolute magnitude (H) | 12.58 |
| Orbital period | 5.17 years |
| Semi-major axis | 2.99 au |
| Perihelion – aphelion | 2.76 – 3.22 au |
| Eccentricity | 0.0759 |
| Inclination | 10.5° |
| Closest distance between its orbit and Earth's (MOID) | 1.80 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.