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Discovery and designation
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| Discovered by | S. J. Bus |
| Discovery site | Siding Spring Observatory |
| Discovery date | February 28, 1981 |
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Designations
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| MPC designation | 4989 |
| Named after | Joseph I. Goldstein |
| Alternate name(s) | 1981 DX1 |
| Epoch May 14, 2008 | |
| Ap | 3.0431073 |
| Peri | 2.1032849 |
| Eccentricity | 0.1826177 |
| Orbital period | 1507.6750712 |
| Mean anomaly | 343.38064 |
| Inclination | 12.33622 |
| Longitude of ascending node | 316.79231 |
| Argument of peri | 80.60845 |
| Absolute magnitude (H) | 13.2 |
4989 Joegoldstein (1981 DX1) is a main-belt asteroid discovered on February 28, 1981 by Schelte J. Bus at Siding Spring Observatory in the course of the U.K. Schmidt-Caltech Asteroid Survey. It was named by Dr. Bus in honor of Joseph I. Goldstein, who was a professor of materials science at the time, in honor of Dr. Goldstein's contributions to the understanding of outer-space materials.
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