21531 Billcollin
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Discovery and designation
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| Discovered by | OCA-DLR Asteroid Survey |
| Discovery site | Caussols |
| Discovery date | July 20, 1998 |
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Designations
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| MPC designation | 21531 |
| Alternative names[1] | 1998 OS |
| Epoch May 14, 2008 | |
| Ap | 2.9597705 |
| Peri | 2.5596835 |
| Eccentricity | 0.0724867 |
| Orbital period | 1674.5480511 |
| Mean anomaly | 221.05285 |
| Inclination | 6.10861 |
| Longitude of ascending node | 264.78147 |
| Argument of peri | 224.69674 |
| Absolute magnitude | 14.8 |
21531 Billcollin (1998 OS) is a Main-belt Asteroid discovered on July 20, 1998 by the OCA-DLR Asteroid Survey at Caussols.
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