| Primary satellite | Secondary satellite |
| Name | COSMOS 1818 DEB | FENGYUN 1C DEB |
| Spacetrack catalog number | 36938 | 30649 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2024 Dec 20 12:47 | 2024 Dec 23 06:03 |
| Time of closest approach (UTC) | 2024 Dec 29 07:21:52.709 |
| Minimum distance | 3.192 km |
| Height difference | 2.804 km |
| Relative speed | 14.744 km/s |
| Angle between velocity vectors | 161° |
| Geographic position | 27.9°N, 66.8°E |
| Height | 781 km |
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