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Discovery and designation
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| Discovered by | E. W. Elst |
| Discovery site | European Southern Observatory |
| Discovery date | June 6, 1991 |
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Designations
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| MPC designation | 12291 |
| Alternate name(s) | 1991 LJ2 |
| Epoch May 14, 2008 | |
| Ap | 3.4479972 |
| Peri | 3.0100300 |
| Eccentricity | 0.0678175 |
| Orbital period | 2119.3527638 |
| Mean anomaly | 272.99425 |
| Inclination | 7.15289 |
| Longitude of ascending node | 90.29457 |
| Argument of peri | 223.11906 |
| Absolute magnitude (H) | 12.5 |
12291 Gohnaumann (1991 LJ2) is an outer main-belt asteroid discovered on June 6, 1991 by E. W. Elst at the European Southern Observatory.
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