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Discovery and designation
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| Discovery site | Purple Mountain Observatory |
| Discovery date | October 4, 1977 |
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Designations
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| MPC designation | 2223 |
| Named after | Sarpedon |
| Alternate name(s) | 1977 TL3 |
| Epoch May 14, 2008 | |
| Ap | 5.2901559 |
| Peri | 5.1247393 |
| Eccentricity | 0.0158827 |
| Orbital period | 4340.4604095 |
| Mean anomaly | 331.80794 |
| Inclination | 15.97969 |
| Longitude of ascending node | 220.98788 |
| Argument of peri | 48.69961 |
| Geometric albedo | 0.0340 |
| Absolute magnitude (H) | 9.41 |
2223 Sarpedon (1977 TL3) is a Jupiter Trojan discovered on October 4, 1977 at Purple Mountain Observatory and named after the Lycian hero Sarpedon from the Iliad.
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