(8618) Sethjacobson Outer Main-belt Asteroid
Discovered on 28 February 1981 by S. J. Bus at Siding Spring.
Seth A. Jacobson (b. 1986) is a postdoctoral researcher at the Observatoire de Nice whose research includes modeling binary asteroid formation and early solar system dynamical processes that may have shaped the structure of the current asteroid belt.Naming citation (MPC batch dated 2014-07-12), IAU / Minor Planet Center, via NASA/JPL
Where Sethjacobson is today
Seen from above the solar system on 2026-10-14: Sethjacobson is 3.25 au from the Sun and 4.14 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 8618 |
| Provisional designation | 1981 DX |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 7.88 km (#6,702 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.285 |
| Absolute magnitude (H) | 12.77 |
| Orbital period | 5.73 years |
| Semi-major axis | 3.20 au |
| Perihelion – aphelion | 3.12 – 3.29 au |
| Eccentricity | 0.0261 |
| Inclination | 7.08° |
| Closest distance between its orbit and Earth's (MOID) | 2.13 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Seth
All asteroids named after someone called Seth
Also discovered on 28 February 1981
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- (3805) Goldreich
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