| Primary satellite | Secondary satellite |
| Name | COSMOS 1818 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 36938 | 30768 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 12:47 | 2024 Dec 22 16:33 |
| Time of closest approach (UTC) | 2024 Dec 27 15:03:55.314 |
| Minimum distance | 2.207 km |
| Height difference | -2.204 km |
| Relative speed | 14.766 km/s |
| Angle between velocity vectors | 163° |
| Geographic position | 14.9°S, 63.6°W |
| Height | 773 km |
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