| Primary satellite | Secondary satellite |
| Name | COSMOS 1818 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 36938 | 31562 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 12:47 | 2024 Dec 21 18:43 |
| Time of closest approach (UTC) | 2024 Dec 27 19:38:42.451 |
| Minimum distance | 4.054 km |
| Height difference | -4.050 km |
| Relative speed | 14.186 km/s |
| Angle between velocity vectors | 143° |
| Geographic position | 59.0°S, 104.6°E |
| Height | 775 km |
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