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Discovery and designation
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| Discovery date | , |
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Designations
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| MPC designation | 8430 |
| Named after | Howard Florey, Baron Florey |
| Alternate name(s) | 1997 YB5 |
| Epoch May 14, 2008 | |
| Ap | 3.0908955 |
| Peri | 2.5252681 |
| Eccentricity | 0.1007142 |
| Orbital period | 1718.7513577 |
| Mean anomaly | 345.85017 |
| Inclination | 3.66613 |
| Longitude of ascending node | 78.91193 |
| Argument of peri | 106.57229 |
| Absolute magnitude (H) | 14.1 |
8430 Florey (1997 YB5) is a main-belt asteroid discovered on 25 December 1997, by Frank B. Zoltowski at Woomera.