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Discovery and designation
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| Discovered by | E. W. Elst |
| Discovery site | European Southern Observatory |
| Discovery date | August 2, 1991 |
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Designations
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| MPC designation | 10780 |
| Named after | Guillaume Apollinaire |
| Alternate name(s) | 1991 PB2 |
| Epoch May 14, 2008 | |
| Ap | 3.1334112 |
| Peri | 2.1012790 |
| Eccentricity | 0.1971716 |
| Orbital period | 1546.6423512 |
| Mean anomaly | 49.08034 |
| Inclination | 6.36858 |
| Longitude of ascending node | 112.44329 |
| Argument of peri | 114.32919 |
| Absolute magnitude (H) | 14.8 |
10780 Apollinaire (1991 PB2) is a main-belt asteroid discovered on August 2, 1991 by E. W. Elst at the European Southern Observatory. The asteroid is named after the French poet Guillaume Apollinaire (Wilhelm Appollinaris de Kostrowitzky).[1]
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