12310 Londontario
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Discovery and designation
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| Discovered by | Spacewatch |
| Discovery site | Kitt Peak |
| Discovery date | February 29, 1992 |
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Designations
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| MPC designation | 12310 |
| Alternative names[1] | 1992 DE4 |
| Epoch May 14, 2008 | |
| Ap | 3.2382084 |
| Peri | 2.2301628 |
| Eccentricity | 0.1843411 |
| Orbital period | 1651.3548610 |
| Mean anomaly | 354.54722 |
| Inclination | 1.69883 |
| Longitude of ascending node | 141.39336 |
| Argument of peri | 225.57965 |
| Absolute magnitude | 14.2 |
12310 Londontario (1992 DE4) is a Main-belt Asteroid discovered on February 29, 1992 by Spacewatch at Kitt Peak.

